Comparia recommendation
Best smartphone under £800
The Samsung Galaxy S24 is the strongest all-round smartphone under £800 because it delivers the best display, the most advanced AI features and excellent camera performance at a competitive price.
Why the Samsung Galaxy S24 is the best smartphone under £800
Comparia analysed four leading smartphones under £800 across six evaluation criteria: camera quality, performance, display quality, battery life, software updates and value for money. Each criterion was weighted based on how most smartphone buyers prioritise their purchase, with camera quality and performance rated as critical factors.
The Samsung Galaxy S24 leads in two of the six categories and places in the top two in every remaining category. Its Dynamic AMOLED 2X display is the brightest and smoothest in this price range, running at 120Hz with peak brightness of approximately 2,600 nits. The Snapdragon 8 Gen 3 processor delivers flagship-level performance, and Galaxy AI provides the most comprehensive suite of on-device AI tools available on any phone under £800.
The iPhone 15 came very close, scoring 8.5/10 with the best video recording and strongest ecosystem integration. The Google Pixel 8 Pro offers the best computational photography but trails in display brightness and raw processing power. The OnePlus 12 delivers exceptional battery life and charging speed but is held back by shorter software support commitments.
Decision confidence: 76%
High confidence because
- Clear leader in display quality, the feature used most throughout the day
- Top-two placement in every single evaluation criterion
- Seven years of guaranteed OS updates, the joint longest in this comparison
Confidence reduced because
- iPhone 15 is very close at 8.5/10 and better for Apple ecosystem users
- Pixel 8 Pro offers superior computational photography for dedicated photographers
Best phone for every priority
Why the Samsung Galaxy S24 wins
-
The best display under £800
The 6.2-inch Dynamic AMOLED 2X panel produces vivid colours, deep blacks and peak brightness of approximately 2,600 nits. The 120Hz adaptive refresh rate makes scrolling, gaming and everyday navigation feel fluid. Every other phone in this comparison has a slower or dimmer display, and since you look at your phone's screen for hours each day, display quality has an outsized impact on satisfaction.
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Most comprehensive AI feature set
Galaxy AI brings practical AI tools directly into the phone's core experience. Circle to Search lets you identify anything on screen instantly. Live Translate converts phone calls in real time. Generative Edit allows you to move, remove or resize objects in photos. Chat Assist summarises and translates messages across apps. No other phone under £800 offers this breadth of AI functionality.
-
Versatile camera system
The 50MP main sensor captures sharp, detailed photos with accurate colour reproduction. The 3x optical telephoto lens provides genuine zoom capability for distant subjects without the quality loss of digital zoom. The 12MP ultrawide lens handles landscapes and group shots competently. Samsung's processing produces punchy, social-media-ready images with strong dynamic range.
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Seven years of guaranteed updates
Samsung promises seven years of Android OS updates and security patches for the Galaxy S24, meaning it will receive support until 2031. This commitment matches Google's Pixel 8 Pro and exceeds Apple's track record. Long-term software support protects your investment and ensures the phone remains secure and capable for years.
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Flagship processor performance
The Snapdragon 8 Gen 3 processor handles everything from demanding games to multitasking with ease. It matches or exceeds every competitor in this comparison for raw processing power, and Samsung's cooling system manages thermals effectively during sustained workloads.
Trade-offs to consider
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Video recording trails the iPhone 15
While the Galaxy S24 captures very good video, it cannot match the iPhone 15's Cinematic Mode, Action Mode stabilisation or overall video colour science. If you record video frequently, the iPhone 15 remains the stronger choice.
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Computational photography behind the Pixel 8 Pro
Google's Tensor G3 chip powers superior night photography, portrait processing and AI editing tools like Magic Eraser and Best Take. Dedicated photographers may prefer the Pixel's more natural, detail-rich output.
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Samsung's software includes pre-installed apps
The Galaxy S24 ships with several Samsung and partner apps pre-installed. While most can be disabled, the out-of-box experience is less clean than the Pixel's stock Android or the iPhone's iOS.
Best alternative: iPhone 15
The iPhone 15 scores 8.5/10 and is the strongest alternative, particularly for users who value video recording and Apple ecosystem integration.
Choose iPhone 15 if
- · You record video frequently and want the best quality
- · You own an Apple Watch, AirPods or Mac
- · You value higher resale value
Choose Samsung Galaxy S24 if
- · You want the best display and AI features
- · You prefer Android's customisation flexibility
- · You want a 3x optical zoom camera
What would change this recommendation
If video recording is your top priority
iPhone 15 becomes the clear choice. Apple's Cinematic Mode and Action Mode are unmatched in this price range.
If computational photography matters most
Google Pixel 8 Pro offers the best night mode, portrait processing and AI editing tools.
If battery life and charging speed are critical
OnePlus 12 leads with a 5,400 mAh battery and 100W wired charging that reaches full in 26 minutes.
If you are already in the Apple ecosystem
iPhone 15 becomes the more practical choice due to seamless integration with AirPods, Apple Watch and Mac.
Smartphone specifications compared
| Specification | Galaxy S24 | iPhone 15 | Pixel 8 Pro | OnePlus 12 |
|---|---|---|---|---|
| Processor | Snapdragon 8 Gen 3 | A16 Bionic | Tensor G3 | Snapdragon 8 Gen 3 |
| Display | 6.2" AMOLED, 120Hz | 6.1" OLED, 60Hz | 6.7" LTPO OLED, 120Hz | 6.82" LTPO AMOLED, 120Hz |
| Main camera | 50MP, f/1.8 | 48MP, f/1.6 | 50MP, f/1.68 | 50MP, f/1.6 |
| Telephoto | 3x optical | 2x optical | 5x optical | 3x optical |
| Battery | 4,000 mAh | 3,349 mAh | 5,050 mAh | 5,400 mAh |
| Charging (wired) | 25W | 20W | 30W | 100W |
| RAM | 8 GB | 6 GB | 12 GB | 12 GB |
| OS updates | 7 years | 6+ years | 7 years | 4 years |
| Weight | 167 g | 171 g | 213 g | 220 g |
| Approx. price | £699 | £699 | £749 | £749 |
| Comparia score | 8.7/10 | 8.5/10 | 8.3/10 | 7.8/10 |
Where to buy the Samsung Galaxy S24
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How Comparia evaluates smartphones under £800
The camera is the most-used feature on any smartphone. Includes photo quality, video recording, low-light performance and zoom capability.
Processor speed, thermal management and sustained performance affect daily responsiveness and longevity.
Brightness, resolution, refresh rate and colour accuracy determine how everything on the phone looks and feels.
A phone that cannot last a full day fails its primary purpose. Charging speed and wireless charging also factor in.
The length of guaranteed OS and security updates determines how long the phone remains secure and functional.
Launch price, current street price and included features relative to competitors determine overall value.
Samsung Galaxy S24 vs iPhone 15
These are the two highest-scoring smartphones under £800. Here is how they compare directly.
8.7/10
8.5/10
Samsung Galaxy S24 wins for
- · Significantly brighter, smoother 120Hz display
- · More advanced Galaxy AI features
- · Longer battery life with larger cell
- · Better telephoto zoom (3x vs 2x)
iPhone 15 wins for
- · Superior video recording quality
- · Seamless Apple ecosystem integration
- · Higher resale value after two years
- · Better sustained thermal performance
Detailed analysis
Camera quality
Camera quality is the most heavily weighted criterion because the camera is the feature most people use every day on their smartphone. This analysis considers photo quality, video recording, low-light performance and zoom versatility.
The Samsung Galaxy S24 scores 9/10. Its 50MP main sensor captures sharp, detailed images with punchy colour processing that works well for social media sharing. The 3x optical telephoto provides genuine zoom capability without resorting to digital crop. Samsung's AI-enhanced processing delivers consistent results across lighting conditions, and features like Nightography mode produce clean low-light shots. Video recording is very good with effective stabilisation, though it does not quite match Apple's computational video pipeline.
The iPhone 15 also scores 9/10 but excels in different areas. Video recording is the iPhone's standout strength, with Cinematic Mode, Action Mode and superior colour science producing footage that looks more natural and polished. Still photography produces excellent colours with a more true-to-life rendering than Samsung's punchier processing. The 2x telephoto is functional but less versatile than the Galaxy S24's 3x zoom.
The Google Pixel 8 Pro scores 9/10 as well, offering the best computational photography. Its night mode captures more light and detail than either Samsung or Apple. Portrait mode edge detection is the most accurate, and AI editing tools like Magic Eraser, Best Take and Photo Unblur are genuinely useful. The 5x optical telephoto provides the longest zoom range in this comparison. Its main weakness is video quality, which trails both Samsung and Apple.
The OnePlus 12 scores 8/10. Its Hasselblad-tuned camera produces vibrant colours with good detail from the 50MP main sensor. The 3x telephoto is capable and the ultrawide lens performs well. However, processing consistency across different lighting conditions is not as reliable as the other three phones, and night mode performance trails the Pixel and iPhone noticeably.
Performance
Performance is rated critical because processor capability directly affects how responsive the phone feels during daily tasks and how long it remains usable as apps grow more demanding.
The Samsung Galaxy S24 and OnePlus 12 both use the Snapdragon 8 Gen 3, scoring 9/10 and 8/10 respectively. The Samsung achieves the higher score because its thermal management sustains peak performance more consistently during extended workloads. The OnePlus 12 occasionally throttles under sustained heavy load despite having a larger cooling system.
The iPhone 15 scores 9/10 with the A16 Bionic chip. It leads in single-core performance, which affects everyday app responsiveness, and delivers the most consistent sustained performance thanks to Apple's excellent thermal design. In GPU-heavy tasks like gaming, the Snapdragon 8 Gen 3 has a slight edge.
The Google Pixel 8 Pro scores 7/10. The Tensor G3 chip is optimised for AI and machine learning tasks rather than raw processing speed. This means photo and video processing are excellent, but in general benchmarks and demanding games, the Tensor trails both the Snapdragon and A16 Bionic. For most daily tasks, the difference is not noticeable.
Display quality
The Samsung Galaxy S24 scores 9/10 with the best display in this comparison. Its 6.2-inch Dynamic AMOLED 2X panel reaches approximately 2,600 nits peak brightness, making it clearly visible in direct sunlight. The 120Hz adaptive refresh rate delivers smooth scrolling and animations, and Samsung's panel calibration produces accurate, vivid colours.
The Google Pixel 8 Pro scores 8/10 with a larger 6.7-inch LTPO OLED running at 120Hz. Peak brightness is approximately 2,400 nits, slightly lower than the Samsung. Colour accuracy is excellent, and the larger screen is beneficial for content consumption and photography review.
The OnePlus 12 scores 8/10 with the largest display at 6.82 inches. Its LTPO AMOLED panel runs at 120Hz with peak brightness of approximately 4,500 nits in high-brightness mode. The display is excellent for media consumption and gaming, though its sheer size makes the phone less pocket-friendly.
The iPhone 15 scores 7/10. Its 6.1-inch Super Retina XDR display is sharp and colour-accurate but is limited to 60Hz on the standard model. This is the single most noticeable compromise compared to the competition, and once you have used a 120Hz display, the difference is immediately apparent in everyday scrolling.
Battery life and charging
The OnePlus 12 scores 9/10, leading this category with its 5,400 mAh battery and extraordinary 100W wired charging speed. It can charge from empty to full in approximately 26 minutes, which fundamentally changes how you think about battery management. Screen-on time reaches 13 to 15 hours in typical use.
The Google Pixel 8 Pro scores 8/10 with a 5,050 mAh battery delivering 12 to 14 hours of screen-on time. Charging at 30W is reasonable and wireless charging support adds flexibility. The Samsung Galaxy S24 also scores 8/10, with its 4,000 mAh battery managing 11 to 13 hours of screen-on time and 25W wired charging.
The iPhone 15 scores 7/10. Its 3,349 mAh battery delivers 10 to 12 hours of screen-on time, which is adequate for most users but provides less margin than the competition. Charging at 20W wired is the slowest in this comparison, though MagSafe wireless charging is convenient.
Software updates and longevity
The Samsung Galaxy S24 scores 9/10 with seven years of guaranteed OS and security updates, extending support until 2031. Samsung has demonstrably improved its update speed in recent years, with major Android updates now arriving within weeks of Google's release. Galaxy AI features continue to receive updates and new capabilities over time.
The Google Pixel 8 Pro also scores 9/10 with seven years of updates and the additional benefit of receiving Android updates first, on the day of release. The pure Android experience means fewer compatibility issues and a cleaner interface.
The iPhone 15 scores 8/10. Apple has a proven track record of supporting iPhones for six or more years, with updates arriving simultaneously worldwide. The slightly lower score reflects the fact that while Apple's track record is excellent, it does not make formal multi-year commitments in the way Samsung and Google now do.
The OnePlus 12 scores 6/10 with four years of OS updates and five years of security patches. While adequate, this is meaningfully shorter than the seven-year commitments from Samsung and Google, and means the phone will lose OS update support in 2028.
Value
The Samsung Galaxy S24 and iPhone 15 both score 8/10 for value at identical £699 price points. The Galaxy S24 offers more raw features for the money (120Hz display, 3x zoom, Galaxy AI), while the iPhone 15 counters with stronger resale value and tighter ecosystem integration that reduces friction if you own other Apple devices.
The Google Pixel 8 Pro scores 7/10 at £749. It is slightly more expensive and offers the best camera system and clean software experience, but its weaker processor and heavier weight count against it for some buyers. The OnePlus 12 also scores 7/10 at £749. It offers the best battery, fastest charging and flagship performance, but shorter software support and lower brand recognition in the UK reduce its overall value proposition.
Where to buy all options
Samsung Galaxy S24
Google Pixel 8 Pro
Frequently asked questions
Is the Samsung Galaxy S24 the best phone under £800?
Should I buy a Samsung Galaxy S24 or an iPhone 15?
Is the Google Pixel 8 Pro better than the Samsung Galaxy S24?
Is the OnePlus 12 worth considering under £800?
Which phone under £800 has the best camera?
How long will these phones receive software updates?
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How Comparia works
Comparia is an AI decision engine that helps you make confident choices. Recommendations are generated by analysing product specifications, verified benchmarks and structured trade-off reasoning.
Transparency
Comparia does not accept payment from manufacturers. Recommendations are based on weighted criteria analysis, not editorial opinion. Some retailer links are affiliate links which help support Comparia at no cost to you. Affiliate relationships never influence scoring, ranking or recommendations.
Methodology
Each product is scored 1 to 10 on each criterion. Criteria are weighted by importance (critical, important, nice to have). The overall score is a weighted average. Trade-offs are identified by comparing where each option leads and trails.
This decision page was generated by Comparia's AI analysis engine and is reviewed for accuracy. Prices and availability are approximate. Last updated: March 2026.