Looking for the best budget smartphones under £400? In 2025, the gap between premium and affordable has never been smaller. This UK-focused guide rounds up the top phones under £400 in the UK that deliver smooth performance, quality cameras, 5G, and long battery life—without the flagship price.
Whether you want cheap smartphones with 120Hz displays under £400 for gaming, or a clean Android experience with years of updates, these picks prove you don’t have to compromise. From OLED screens to fast charging and solid software support, our shortlists highlight the best budget smartphones under £400 that give you maximum value right now.
💡 Why Budget Smartphones in 2025 Are a Smarter Choice Than Ever
Budget smartphones used to mean compromise — slower processors, average cameras, and basic displays. But in 2025, that reputation no longer applies. The best budget smartphones under £400 now rival premium flagships in performance, features, and design, making them one of the smartest tech investments for UK buyers.
Here’s why affordable smartphones in 2025 deliver more value than ever:
⚡ Performance That Keeps Up
Thanks to modern chipsets like the Snapdragon 7 Gen series and MediaTek Dimensity 800+, cheap phones are no longer laggy or outdated. From editing photos to gaming and video calls, today’s affordable smartphones in the UK handle multitasking as smoothly as last year’s flagship devices.
🌟 Flagship-Like Features at Half the Price
Features once reserved for £1,000+ phones are now found in top phones under £400 in the UK, including:
- Vibrant AMOLED displays with 120Hz refresh rates
- AI-enhanced multi-camera systems with Night Mode and OIS
- 5G connectivity for ultra-fast downloads and streaming
- Water resistance and Gorilla Glass durability
In short, you get nearly 80% of a flagship experience at less than half the price.
🔒 Long-Term Software Support
Manufacturers like Google, Samsung, and OnePlus now promise 3–4 years of Android updates and extended security patches. This means your budget phone under £400 won’t feel outdated after just one year — a huge plus for long-term value.
💰 Real Value for Money
Not everyone needs a £1,200 device. For most UK users — who use their phones for social media, video streaming, messaging, and light gaming — the best affordable smartphones 2025 already deliver everything you need. Choosing budget saves you money for accessories, subscriptions, or other tech upgrades.
👉 Key Takeaway: In 2025, buying smart means buying budget. Affordable smartphones combine premium design, strong performance, and reliable updates — all without draining your wallet.
Top 10 Best Budget Smartphones under $400 in 2025
Here’s our handpicked list of the best phones that combine affordability and performance perfectly:
1. Google Pixel 7a — The Camera King Under £400
💡 Best For: Photography lovers, Android purists
💰 Price Range: ~£299–£399
When it comes to the best budget smartphones under £400 in the UK, the Google Pixel 7a stands out as a camera-first powerhouse. Even in 2025, it continues to dominate the affordable smartphone category with its unmatched computational photography, clean software, and long-term support.
🔍 Why It’s a Top Pick
- 📸 Incredible Camera Performance
The Pixel 7a’s 64MP main camera, paired with Google’s famous AI-driven software, produces stunning results in any lighting. Features like Night Sight, Real Tone, Magic Eraser, and Super Res Zoom make it easy for anyone — even casual users — to capture professional-looking photos. - ⚡ Tensor G2 Power: Equipped with Google’s Tensor G2 processor, the same chip from the Pixel 7 series, the 7a handles multitasking, AI features, and gaming smoothly. From live translations to AI-driven call screening, this phone packs serious intelligence into its compact frame.
- 🌈 Vibrant OLED Display: The 6.1-inch OLED screen with a 90Hz refresh rate strikes the perfect balance between size and quality. Whether you’re bingeing Netflix, scrolling Instagram, or editing photos, the visuals are bright, sharp, and fluid.
- 🔒 Long-Term Software Support: Google promises 3 years of Android updates and 5 years of security patches — ensuring your Pixel 7a stays secure and relevant long after purchase. That’s one of the longest commitments you’ll find in the affordable smartphone 2025 market.
- 📶 Connectivity You Can Rely On: With 5G, Wi-Fi 6, and eSIM support, staying connected is seamless, fast, and flexible.
- ⌚ Ecosystem Advantage: Pair it with the Google Pixel Watch 2 or Pixel Buds, and you’ve got an affordable yet premium ecosystem for productivity, fitness, and entertainment.
Already impressed with Google’s smartphone innovation? You might also want to explore how Pixel’s AI magic stacks up against other devices like the Google Pixel Fold, their bold leap into foldable tech.
✅ Mini Verdict
If camera quality is your top priority, the Google Pixel 7a is easily the best budget smartphone under £400 in 2025. It delivers flagship-level photos, smooth performance, and guaranteed long-term updates — all in a compact, user-friendly package.
2. Samsung Galaxy A35 5G — Best All-Rounder Under £400
💡 Best For: Balanced performance, long battery life, and everyday reliability
💰 Price Range: ~£229–£363
If you’re looking for a phone that does iIf you want a phone that simply does everything well, the Samsung Galaxy A35 5G is one of the best budget smartphones under £400 in the UK. It blends Samsung’s trademark display quality with strong battery life, versatile cameras, and years of software support — making it a safe and dependable choice for most users.
🔍 Why It’s a Top Pick
- 🌈 Stunning Super AMOLED Display: The 6.6-inch Super AMOLED screen with 120Hz refresh rate is a highlight. Colors are rich, blacks are deep, and scrolling feels buttery smooth. For watching Netflix, browsing TikTok, or scrolling through photos, it’s hard to beat this level of display quality at this price.
- 🔋 Battery That Lasts: With a 5,000mAh battery and 25W fast charging, the Galaxy A35 5G easily powers through a full day of heavy use. Whether you’re streaming, working remotely, or gaming, you won’t be reaching for the charger too often.
- 📸 Triple-Lens Camera Setup: The camera system includes a 50MP main lens, 8MP ultra-wide, and 5MP macro, giving you flexibility for portraits, landscapes, and close-up shots. While it won’t rival a Pixel in low light, it’s more than capable for everyday photography and social media.
- 💾 Storage & RAM: You get 6GB RAM and 128GB storage (expandable via microSD), enough for apps, photos, and videos without worry.
- 🛡️ Security & Updates: Samsung’s Knox security and commitment to 4 years of updates give the A35 a serious edge in longevity. That’s longer than many competitors in the affordable category.
- 🌐 Software Experience: Running on One UI 6 (Android 14), the interface is polished, intuitive, and packed with customization features. From split-screen multitasking to gesture controls, it feels like a flagship experience on a budget.
- Colour: purple
- 2.4GHz Exynos 1380 Octa-Core Processor
- 50 megapixel main camera with optical image stabilisation
✅ Mini Verdict
The Samsung Galaxy A35 5G is the definition of a great all-rounder. With its immersive display, reliable battery, versatile camera setup, and Samsung’s trusted software support, it’s one of the top phones under £400 for everyday users who want a balanced device without compromise.
3. OnePlus Nord CE 4 — Best for Fast Charging & Smooth UI
💡 Best For: Speed, clean OxygenOS experience, and multitasking
💰 Price Range: ~£350–£380
The OnePlus Nord CE 4 is one of the most balanced budget smartphones oIf charging time and smooth performance are top priorities, the OnePlus Nord CE 4 deserves a spot on your shortlist of the best budget smartphones under £400 in 2025. OnePlus has always been known for delivering flagship-like performance at mid-range prices, and the Nord CE 4 continues that tradition with its combination of blazing-fast charging, powerful hardware, and lightweight design.
🔍 Why It Stands Out
- ⚙️ Snapdragon 7 Gen 3 Processor: The Snapdragon 7 Gen 3 chipset provides excellent mid-range performance, handling demanding games, multitasking, and video editing without breaking a sweat. Paired with 8GB of RAM, it ensures fluid navigation and zero lag in everyday use.
- ⚡ 100W SuperVOOC Charging: One of the fastest charging systems in the market — you can go from 1% to 100% in under 30 minutes. Perfect for busy professionals, students, or travelers who don’t have time to wait around for a full recharge.
- 📱 6.7” AMOLED Display, 120Hz: A vibrant, FHD+ AMOLED panel with a 120Hz refresh rate makes scrolling and animations incredibly smooth. Colors pop, blacks are deep, and it’s ideal for everything from Netflix binges to late-night gaming sessions.
- 🔋 5,500mAh Battery: A larger-than-average battery means the Nord CE 4 doesn’t just charge fast — it also lasts long. Even with heavy usage, you can comfortably get through a full day on one charge.
- 💡 Lightweight & Ergonomic: Weighing just ~185g, the phone is slim and comfortable to hold, making it a great option for long-term daily use without hand fatigue.
- 🚀 OxygenOS 14: OnePlus’s software, OxygenOS 14, is one of the cleanest and fastest Android skins available. Minimal bloatware, thoughtful features, and timely updates make the experience polished and user-friendly.
✅ Mini Verdict
The OnePlus Nord CE 4 is all about speed and simplicity. With its 100W charging, long-lasting battery, clean UI, and powerful processor, it stands out as one of the top phones under £400 in the UK for users who value both convenience and performance equally.
- {Camera} – The 50MP Sony LYT-600 main camera puts the power to take beautiful Sony-quality photos and videos in the palm…
- {Processor} -The Snapdragon 695 chipset tackles any task with ease; OnePlus’s flagship RAM-Vita tech dials it up, delive…
- {Battery} – 5,110 mAh Speedy 80W SUPERVOOC, charge from 1 to 100% in just 50 minutes; Handy 5W Reverse Charging perfect …
4. iPhone SE (3rd Gen) — Best Budget iPhone Experience
💡 Best For: iOS lovers, Apple fans, and performance seekers
💰 Price Range: ~£399
If you want an Apple phone without spending flagship-level money, the iPhone SE (3rd Gen) is your golden ticket. Despite being the most affordable option in Apple’s lineup, it delivers flagship performance under £400 thanks to the same A15 Bionic chip found in the iPhone 13 series. Add to that Apple’s legendary software support, and this compact device easily earns its spot on the list of the best budget smartphones under £400 in 2025.
🔍 Why It Stands Out
- ⚡ A15 Bionic Chip: Don’t be fooled by its price — this chip is a beast. From gaming to multitasking to photo editing, the A15 ensures buttery-smooth performance, rivaling phones twice its cost.
- 📷 12MP Rear Camera with Smart HDR 4 & Deep Fusion: The single 12MP rear camera might look modest on paper, but Apple’s computational photography brings it to life. Photos are sharp, color-accurate, and detailed, even in tricky lighting conditions. Portrait shots and video recording are especially impressive for this price.
- 📲 Years of iOS Updates: Apple leads the industry in software support. With 5+ years of iOS updates, your iPhone SE won’t just stay secure — it’ll keep getting new features well into the future, giving it the longest lifespan of any phone under £400.
- 🔒 Touch ID + Home Button: For users who miss the classic iPhone design, the iPhone SE keeps it alive with Touch ID, a physical home button, and a compact form factor that’s perfect for one-handed use.
- 📶 5G Connectivity: Future-proofed with 5G, the iPhone SE delivers blazing download and streaming speeds, making it competitive with modern Android rivals.
- 📏 Compact & Portable: At just 4.7 inches, it’s one of the most pocket-friendly smartphones available today — a rare find in 2025’s market of oversized displays.
✅ Mini Verdict
The iPhone SE (3rd Gen) is the best way to experience iOS without breaking the bank. It delivers flagship-level speed, premium security, and long-term updates — all for under £400. While its design feels old-school and the display is smaller than rivals, it’s still unbeatable for those who value reliability and longevity over flashy extras.
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5. Motorola Edge 2024 — Best for Clean Android + All-Day Battery
💡 Best For: Clean Android lovers, battery endurance, and binge-watchers
💰 Price Range: ~£370
If you’re looking for a budget smartphone under £400 in the UK that nails the essentials without gimmicks, the Motorola Edge 2024 is a standout choice. Known for its near-stock Android experience, this device combines a fluid 144Hz OLED display with exceptional battery life — perfect for everyday users, content bingers, and commuters.
🔍 Why It Stands Out
- 📱 Stunning 6.6″ OLED Display (144Hz Refresh Rate): One of the smoothest screens in this price range. The 144Hz panel makes scrolling, gaming, and video playback incredibly fluid, while OLED technology ensures deep blacks, vibrant colors, and immersive visuals.
- 🔋 Massive 5000mAh Battery + 68W TurboPower Charging: Battery anxiety? Not with the Edge 2024. With its huge 5000mAh battery, you can comfortably get over a full day of heavy use. And when you do need to recharge, 68W TurboPower charging takes you from near-empty to 50% in under 20 minutes.
- 🧼 Clean Android 14 Experience: Motorola keeps things refreshingly simple with minimal bloatware and a UI close to Google’s stock Android. This means faster updates, smoother performance, and a clutter-free interface that’s ideal for productivity.
- 📷 Triple Camera Setup (50MP Main): While photography isn’t its main selling point, the 50MP primary camera with AI enhancements captures sharp daytime shots and performs decently in low light. It’s more than enough for casual photographers and social media users.
- 💡 Sleek & Comfortable Design: The Edge 2024’s slim bezels and curved edges give it a premium feel that outshines many mid-range competitors.
- Advanced 50MP low light camera Effortlessly capture crisp and bright photos at night with Ultra Pixel, Google Auto Enhan…
- Ultra-fast TurboPower charging with 68 W. Get energy for the whole day with just 15 minutes of charge¹
- Beautiful design, fully protected. Enjoy the premium look and feel of a symmetrically curved design, vegan leather and I…
✅ Mini Verdict
The Motorola Edge 2024 is perfect if you value long battery life, smooth performance, and a clean Android interface. It’s not the flashiest phone on this list, but it nails the basics with polish — making it one of the best budget smartphones under £400 in 2025 for practical users.
6. Poco X6 5G — Best for Gamers and Power Users
💡 Best For: Gaming, heavy multitasking, and performance-focused users
💰 Price Range: ~£299
If you’re after flagship-level power at a budget-friendly price, the Poco X6 5G is one of the most unbeatable choices. Known for pushing performance limits in the mid-range market, this device is specifically designed for gamers, streamers, and power users who require smooth performance on a budget.
🔍 Why It Stands Out
- ⚙️ Snapdragon 7s Gen 2 Processor (4nm): At its core, the Poco X6 5G ensures smooth and responsive performance demanding games, apps, and multitasking. Whether it’s Call of Duty: Mobile, heavy editing, or long gaming sessions, this chipset keeps things smooth and responsive.
- 📱 6.67″ AMOLED Display with 120Hz Refresh Rate: The large AMOLED screen is bright, sharp, and perfect for immersive gaming and streaming. The 120Hz refresh rate makes every animation and swipe silky smooth, giving gamers a real edge during fast-paced action.
- 🔋 5100mAh Battery + 67W Turbo Charging: The Poco X6 is built for long sessions. With a massive 5100mAh battery, you’ll easily get a full day of heavy use. When it’s time to recharge, the 67W fast charger powers it back up in around 45 minutes — a huge win for mobile gamers.
- 📷 64MP Main Camera with OIS: While gaming is its strength, the Poco X6 5G doesn’t neglect photography. The 64MP primary camera with Optical Image Stabilization (OIS) ensures sharp, blur-free shots, even in low-light conditions. Perfect for snapping photos between gaming marathons.
- 🎮 Gamer-Centric Features: With LiquidCool Technology for heat management and Game Turbo optimizations, the Poco X6 is engineered for sustained performance without overheating.
- Vivid efficiency of flagship MediaTek Dimensity 8300-Ultra with 5G
- Revolutionary 64MP triple camera with OIS
- Immersive 6.67″ display with 16.7 million colors
✅ Mini Verdict
The Poco X6 5G is a powerhouse in the affordable smartphones 2025 UK market. For under £300, it offers flagship-like gaming performance, a gorgeous AMOLED display, and fast charging, making it the best budget smartphone under £400 for gamers and performance seekers.
7. Redmi Note 13 Pro — Best for Photography + Battery Combo
💡 Best For: Photography lovers, content creators, and long battery life
💰 Price Range: ~£350
If you’ve ever dreamed of owning a phone with a 200MP camera without spending a fortune, the Redmi For anyone who wants the best budget smartphones under £400 that excel in both photography and endurance, the Redmi Note 13 Pro is a clear standout. Xiaomi has managed to squeeze a 200MP flagship-grade camera, a vibrant AMOLED screen, and fast charging into a mid-range price point — making this one of the top phones under £400 in the UK.
🔍 Why It Stands Out
- 📷 200MP Main Camera with AI Processing: The star feature is the 200MP Samsung ISOCELL HP3 sensor, delivering breathtaking detail and sharpness. Thanks to Xiaomi’s AI-powered enhancements, the phone captures vibrant, social-media-ready photos in daylight, portraits with excellent depth, and surprisingly clean low-light images. Even when cropping, you’ll retain impressive clarity — a rare strength in this price range.
- 📱 6.67” AMOLED Display, 120Hz: With an edge-to-edge 6.67-inch AMOLED panel, scrolling and streaming are smooth and immersive. The 120Hz refresh rate ensures fast motion looks fluid, whether you’re gaming, watching videos, or navigating apps.
- 🔋 5100mAh Battery + 67W Turbo Charging: This phone is built for creators and power users who are always on the go. Its 5100mAh battery lasts easily through a full day of heavy use, and the 67W fast charging tops it up in under 45 minutes.
- ✨ Premium Design: Despite being a mid-range option, the Redmi Note 13 Pro feels anything but cheap. With Gorilla Glass 5 protection, a sleek profile, and refined finishes, it looks and feels like a premium flagship.
- 🌐 5G & Expandable Storage: Dual SIM, 5G-ready connectivity, and expandable storage make this device highly practical for both professionals and casual users alike.
- Performance, Power up your daily essentials
- Ultra-clear 200MP camera with OIS and ultimate hardware for flawless imaging
- Immersive and smooth display for gaming
✅ Mini Verdict
The Redmi Note 13 Pro is easily one of the best affordable smartphones 2025 UK buyers can pick. For under £400, you’re getting a 200MP pro-level camera, long battery life, and a fluid AMOLED display — all wrapped in a stylish package. If photography and endurance are your priorities, this phone is hard to beat.
8. Nothing Phone (2a) — Best for Style and Unique Design
💡 Best For: Trendsetters, design lovers, and clean Android experience
💰 Price Range: ~£350
IIf you’re tired of generic mid-range phones, the Nothing Phone (2a) stands out as one of the best budget smartphones under £400 in the UK for those who want both performance and personality. Its futuristic Glyph Interface, transparent design, and smooth software experience make it a phone that feels truly different in 2025.
🔍 Why It Stands Out
- 🌟 Unique Glyph Interface: The standout feature is the LED Glyph lighting system on the back, which doubles as notifications for calls, messages, and charging status. It’s not just stylish — it’s functional, giving you a quick glance at important alerts without even touching your screen.
- ⚡ MediaTek Dimensity 7200 Pro Chipset: Built on a power-efficient 4nm process, this processor delivers reliable performance for multitasking, streaming, and casual gaming. With plenty of RAM and optimized software, you get smooth performance that rivals pricier phones.
- 📱 6.7” AMOLED Display, 120Hz: The display is another highlight, offering a full HD+ AMOLED panel with a 120Hz refresh rate. Scrolling feels fluid, videos look sharp, and games are more immersive.
- 🧼 Nothing OS 2.5 (Android 14): Nothing’s software is refreshingly clean — close to stock Android but with thoughtful custom touches. You won’t find the bloatware that often clutters mid-range devices, making it one of the most polished affordable smartphones 2025 UK consumers can buy.
- 🔋 5000mAh Battery + 45W Fast Charging: The 5000mAh battery ensures a full day of use, even with heavy tasks. And with 45W charging, you’re back up to speed quickly.
- GO PRO – Co-engineered with MediaTek, the custom Dimensity 7200 Pro processor delivers the ideal performance with optima…
- STAY COOL – Advanced cooling system, a game changer for performance and longevity, with extra large vapour chamber (3,20…
- FULL TANK – With 5,000 mAh, keep going for up to 2 days straight with our biggest battery to date, with 45W Fast Charge,…
✅ Mini Verdict
The Nothing Phone (2a) is more than just a smartphone — it’s a statement piece. For those who value unique design, clean software, and reliable performance under £400, it’s one of the top phones under £400 in the UK right now. If you want a device that blends style with substance, this is the one to get.
9. Realme 12+ — Best for Premium Feel at a Low Cost
💡 Best For: Style-conscious users who want premium design without overspending
💰 Price Range: ~£300
Looking for a phone that feels expensive but won’t drain your wallet? The Realme 12+ is an underdog winner in 2025’s budget smartphone The Realme 12+ proves that you don’t need to pay flagship prices to enjoy a luxury feel. With its vegan leather back finish, smooth AMOLED display, and reliable everyday performance, it’s easily one of the best budget smartphones under £400 in the UK for 2025.
🔍 Why It Stands Out
- 💼 Premium Vegan Leather Finish: Unlike most budget phones that stick to plastic, the Realme 12+ comes with a stylish vegan leather back and a circular camera module inspired by luxury watches. It looks and feels far more expensive than its price tag suggests.
- ⚙️ MediaTek Dimensity 7050 5G Chipset: This chipset balances power and efficiency, offering smooth app performance, casual gaming, and multitasking without draining the battery. A solid choice for those who want a dependable mid-range processor.
- 📱 6.7” AMOLED Display with 120Hz Refresh Rate: The FHD+ AMOLED display is both sharp and vibrant, while the 120Hz refresh rate ensures smoother scrolling and animations — something usually found on much pricier devices.
- 🔋 5000mAh Battery + 67W SUPERVOOC Fast Charging: Battery anxiety won’t be an issue here. With 67W fast charging, the Realme 12+ can reach almost full power in under an hour, making it perfect for busy lifestyles.
- 📷 Versatile 50MP Sony Camera with OIS: Photography is reliable thanks to a 50MP Sony sensor with optical image stabilisation (OIS). It produces crisp, stable shots even in low light — a standout feature in the sub-£400 category.
- Enter the era of 5G with the realme 12+ featuring Dual-SIM capability for enhanced connectivity.
- Enjoy ample storage and seamless multitasking with 256GB internal memory and 8GB of RAM.
- Sleek and stylish design meets durability with a glass front and a sturdy plastic frame and back.
✅ Mini Verdict
The Realme 12+ is one of the top affordable smartphones 2025 UK shoppers should consider if they want premium looks at a low cost. Between its luxury-inspired design, smooth performance, and fast charging, it offers outstanding value under £400.
10. Samsung Galaxy A25 5G — Best for Samsung Loyalists on a Budget
💡 Best For: Samsung fans who want value without overspending
💰 Price Range: ~£280
The Samsung Galaxy A25 5G is proof that you don’t have to splash out £800+ to enjoy Samsung’s signature display quality and polished One UI software. As one of the best budget smartphones under £400 in the UK, it delivers excellent value for Samsung loyalists who want to stay in the ecosystem without breaking the bank.
If you’re already familiar with Samsung’s ecosystem or love the smooth experience of One UI, you’ll appreciate what this phone brings — especially if you’ve seen what their premium models like the Galaxy Z Fold 5 are capable of.
🔍 Why It Stands Out
- 🌈 6.5” Super AMOLED Display with 120Hz Refresh Rate: Samsung is known for its displays, and even at this price point, the A25 5G shines with a bright, vibrant Super AMOLED panel. The 120Hz refresh rate ensures silky-smooth scrolling, gaming, and video playback.
- ⚙️ Exynos 1280 Processor: While not the fastest chipset available, the Exynos 1280 provides solid day-to-day performance, handling social media, streaming, and light multitasking with ease. For casual UK users, it’s more than enough.
- 📷 50MP Main Camera with OIS (Optical Image Stabilisation): A rare find in this price range, OIS support helps capture sharp photos and stable videos, even in low-light conditions or while on the move.
- 🔋 Long-Lasting 5000mAh Battery + 25W Fast Charging: With its all-day battery life, the A25 5G won’t let you down on long commutes, nights out, or travel days. The 25W charging support helps get you back up to speed quickly.
- 📲 Samsung One UI + Long-Term Support: Running on Android 14 with One UI 6, the A25 delivers Samsung’s polished interface along with years of guaranteed security updates, making it a reliable long-term buy.
- Samsung GALAXY A25 5G A256B Blue/Black Refurbished
- Mobile phone
- Samsung
✅ Mini Verdict
The Samsung Galaxy A25 5G is perfect for anyone who loves Samsung but wants a cheap 5G phone under £400 in the UK. With a crisp AMOLED screen, strong battery life, and OIS camera, it balances affordability and Samsung’s trusted quality.
📱 Top 10 Best Budget Smartphones Under £400 in the UK – Comparison Table
| Smartphone | Best For | Display | Battery & Charging | UK Price Range |
|---|---|---|---|---|
| Google Pixel 7a | Best Camera & Stock Android | 6.1″ OLED, 90Hz | 4385mAh, 18W charging | ~£299–£399 |
| Samsung Galaxy A35 | All-Round Daily Use | 6.6″ Super AMOLED, 120Hz | 5000mAh, 25W charging | ~£229–£349 |
| OnePlus Nord CE 4 | Performance + Fast Charging | 6.7″ AMOLED, 120Hz | 5500mAh, 100W SuperVOOC | ~£349–£399 |
| iPhone SE (3rd Gen) | iOS Lovers & Compact Power | 4.7″ Retina HD | 2018mAh, 20W charging | ~£399 |
| Motorola Edge 2024 | Clean UI + Battery Life | 6.6″ OLED, 144Hz | 5000mAh, 68W TurboCharge | ~£370 |
| Poco X6 5G | Gaming + Speed | 6.67″ AMOLED, 120Hz | 5100mAh, 67W charging | ~£279–£299 |
| Redmi Note 13 Pro | Photography + Value | 6.67″ AMOLED, 120Hz | 5100mAh, 67W charging | ~£350 |
| Nothing Phone (2a) | Design + Clean OS | 6.7″ AMOLED, 120Hz | 5000mAh, 45W charging | ~£349–£379 |
| Realme 12+ | Premium Feel + Budget Friendly | 6.7″ AMOLED, 120Hz | 5000mAh, 67W charging | ~£300–£320 |
| Samsung Galaxy A25 | Samsung Ecosystem + Value | 6.5″ Super AMOLED, 120Hz | 5000mAh, 25W charging | ~£280–£299 |
📚 Top 3 Best Budget Smartphones 2025 — Quick Picks (UK Edition)
| Category | Smartphone | Why It’s the Best in the UK | UK Price Range |
|---|---|---|---|
| 🥇 Best Overall | Google Pixel 7a | Best camera + stock Android + long updates | ~£299–£399 |
| 💸 Best for Gaming | Poco X6 5G | Flagship-like gaming performance under £300 | ~£279–£299 |
| 📸 Best Camera | Redmi Note 13 Pro | Stunning 200MP camera + AMOLED display | ~£350 |
📦 Where to Buy the Best Budget Smartphones Under £400 in the UK
Looking to grab one of the best budget smartphones under £400 in the UK? Here are the top places British shoppers trust for affordable smartphones in 2025:
- 🛒 Amazon UK – Huge variety of mid-range phones, competitive prices, and fast Prime delivery. 🛒 Browse Budget Smartphones on Amazon →
- 🛍️ Currys PC World – Great for in-store browsing and online deals, often with bundle offers on accessories.
- 🏬 Argos – Convenient click-and-collect service across the UK, perfect if you need your new phone the same day.
- 📱 Carphone Warehouse – A strong choice if you’re looking for SIM-free deals or phone + contract bundles under £400.
- 🔄 John Lewis & Partners – Slightly pricier at times, but well-known for excellent customer service and extended warranties.
👉 Pro Tip for UK buyers: Always compare prices across Amazon UK, Currys, and Argos before purchasing. Seasonal sales like Boxing Day, Black Friday, and Amazon Prime Day can help you save an extra £50–£100 on top smartphones.
🛠️ How to Pick the Best Budget Smartphone Under £400 in the UK
Buying one of the best budget smartphones under £400 in the UK isn’t about compromise anymore — it’s about finding the perfect device that matches your lifestyle without overspending. Here’s a breakdown of what UK buyers should prioritise in 2025:
⚡ Performance That Doesn’t Lag
Your phone should keep up with everyday tasks like WhatsApp, Instagram, Netflix, and even casual gaming. Look for:
- Snapdragon 7 Gen series (7 Gen 1 / 7s Gen 2 / 7 Gen 3)
- MediaTek Dimensity 7050 / 7200 / 800 series
These chipsets deliver flagship-level responsiveness, multitasking, and smooth performance for under £400.
📱 Display Quality That Feels Premium
Your screen is where you spend most of your time, so don’t compromise:
- AMOLED or OLED panels – for punchy colours and deep blacks
- 90Hz or 120Hz refresh rates – for buttery-smooth scrolling, gaming, and video playback
This is especially important if you stream on Netflix, YouTube, or Prime Video while commuting.
🔋 Battery Life to Get Through the Day
No one wants to be tethered to a charger. In 2025, affordable smartphones in the UK often include:
- 4500–5000mAh batteries
- Fast charging support (at least 25W, ideally 67W or more)
This ensures your phone can last through long workdays, travel, or binge-watching sessions.
📸 Camera Setup That Punches Above Its Price
Even budget-friendly phones now deliver excellent cameras. Look for:
- 50MP+ sensors – for sharp photos and better detail
- OIS (Optical Image Stabilisation) – for blur-free shots, especially in low light
- AI camera features – like night mode and portrait enhancements
If social media content creation is your thing, these features matter more than megapixel counts alone.
🧠 Software & Updates for Long-Term Value
UK buyers are increasingly keeping their phones longer, so software support is key:
- 3+ years of Android updates
- 5 years of security patches (Google and Samsung are leaders here)
- Clean interfaces – Pixel’s stock Android, Samsung’s One UI, or Nothing OS for smoother usability
This ensures your phone stays secure, modern, and resale-worthy for years.
👉 Pro Tip for UK Buyers:
Match your phone to your lifestyle.
- 🎮 Gamers → Look for AMOLED + high refresh + efficient cooling (e.g., Poco X6 5G, OnePlus Nord CE 4)
- 📸 Photography lovers → Prioritise OIS + AI processing (e.g., Google Pixel 7a, Redmi Note 13 Pro)
- 📺 Content streamers → Go for large AMOLED + 5000mAh battery (e.g., Samsung Galaxy A25, Motorola Edge 2024)
✅ By focusing on these essentials, you’ll easily find an affordable smartphone in 2025 UK that delivers premium experiences without crossing the £400 line.
🎯 Final Thoughts: Smart Tech, Smart Spending
Gone are the days when enjoying a premium smartphone experience meant spending over £1,000. In 2025, the best budget smartphones under £400 in the UK deliver smooth performance, stunning displays, and reliable cameras — often rivaling flagship devices from just a couple of years ago.
Whether you want:
- 📸 Pixel-level photography with AI-enhanced features
- 🎮 Gaming-ready power with 120Hz AMOLED screens and efficient cooling
- 🔋 All-day battery life with super-fast charging
- 🧠 Long-term software updates for future-proofing
…there’s an affordable smartphone in the UK ready to fit your lifestyle without straining your budget.
✅ Choose wisely.
✅ Save smartly.
✅ Enjoy premium features at a fraction of flagship prices.
If you’ve been holding out for the right upgrade, now is the perfect time. The top phones under £400 in the UK are proof that smart spending doesn’t mean settling for less — it means getting more value where it matters most.
💬 Now it’s your turn:
Which of these budget smartphones would you grab in 2025? Let us know in the comments!
❓ FAQ – Best Budget Smartphones Under £400 in the UK (2025)
Q1. What is the best overall budget smartphone under £400 in the UK?
The Google Pixel 7a is widely regarded as the best overall option in 2025. It combines a class-leading camera, Google’s clean Android software, the powerful Tensor G2 chip, and 5 years of updates — all for under £400.
Q2. Which smartphone under £400 is best for gaming?
The Poco X6 5G is the top choice for UK gamers on a budget. With its Snapdragon 7s Gen 2 processor, 120Hz AMOLED display, and LiquidCool technology, it delivers smooth gaming without overheating — all at around £299.
Q3. Are budget phones under £400 good for photography?
Yes — phones like the Redmi Note 13 Pro (200MP camera) and Pixel 7a (computational photography with Night Sight and Real Tone) offer excellent photo quality, even in low light, rivaling much more expensive handsets.
Q4. How long will affordable smartphones last in 2025?
Most of the best budget smartphones under £400 UK now come with 3–5 years of Android updates and durable designs. That means your phone stays secure, reliable, and relevant for years — not just one upgrade cycle.
Q5. Can I get 5G connectivity in a phone under £400?
Absolutely. Every smartphone in this guide, from the Samsung Galaxy A35 to the Nothing Phone (2a), supports 5G. This ensures fast downloads, smooth streaming, and future-ready performance on UK networks.
Q6. Which phone has the best battery life under £400?
The Motorola Edge 2024 and Poco X6 5G are standout picks. Both come with large 5000mAh+ batteries and fast charging (67W–68W), giving you reliable all-day usage with quick top-ups when needed.
Q7. What features should I look for in the top phones under £400 in the UK?
Look for:
Snapdragon 7 or Dimensity 700+ chipsets (smooth multitasking & gaming)
AMOLED/OLED displays with 90Hz–120Hz refresh rates
4500–5000mAh battery with fast charging
At least 3 years of software and security updates
Q8. Is the iPhone SE 3rd Gen still worth buying in 2025?
Yes, if you prefer iOS. The iPhone SE (3rd Gen) still offers the powerful A15 Bionic chip, 5G support, and years of iOS updates. It’s compact, fast, and affordable — making it the best iPhone under £400 in the UK.
📚 Source References
- Google. (2023). Pixel 7a – Google Store (UK). Retrieved from https://store.google.com/gb/product/pixel_7a
- Samsung. (2024). Galaxy A35 5G – Official Specs & Features. Retrieved from https://www.samsung.com/uk/smartphones/galaxy-a35-5g
- OnePlus. (2024). Nord CE 4 – OnePlus UK. Retrieved from https://www.oneplus.com/uk/product/oneplus-nord-ce-4
- Apple. (2023). iPhone SE (3rd Generation) – Technical Specs. Retrieved from https://www.apple.com/uk/iphone-se/specs/
- Motorola. (2024). Motorola Edge 2024 – Specs & Features. Retrieved from https://www.motorola.com/uk/smartphones-edge
- Xiaomi (POCO). (2024). POCO X6 5G – Global Launch Page. Retrieved from https://www.po.co/global/product/poco-x6-5g
- Xiaomi (Redmi). (2024). Redmi Note 13 Pro – Official UK Site. Retrieved from https://www.mi.com/uk/product/redmi-note-13-pro
- Nothing Technology. (2024). Nothing Phone (2a) – Official Specs. Retrieved from https://nothing.tech/pages/phone-2a
- Realme. (2024). Realme 12+ – Specs & Features. Retrieved from https://www.realme.com/uk/realme-12-plus
- Samsung. (2024). Galaxy A25 5G – Samsung UK Official Page. Retrieved from https://www.samsung.com/uk/smartphones/galaxy-a25-5g
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