Outstanding value — reviewers repeatedly call it a 'flagship killer' and 'the best value in an Android flagship', undercutting Samsung and Google substantially.
Battery life is a defining strength — the big 5,400mAh cell delivers 6–10 hours of screen-on time and is the single feature owners praise most, even those who switched away.
Charging is exceptional — 80W (US) / 100W (international) wired fully charges in roughly 30 minutes (owners report ~40 min real-world), plus 50W wireless.
The 6.82-inch LTPO AMOLED is among the best phone displays — 120Hz, Dolby Vision, and a 4,500-nit peak that stays readable in harsh sunlight.
Snapdragon 8 Gen 3 with up to 16/24GB RAM delivers top-tier performance that still feels fast a year-plus later.
Deal Breakers
Pros & Cons
OnePlus 12
Pros
Outstanding value — reviewers repeatedly call it a 'flagship killer' and 'the best value in an Android flagship', undercutting Samsung and Google substantially.
Battery life is a defining strength — the big 5,400mAh cell delivers 6–10 hours of screen-on time and is the single feature owners praise most, even those who switched away.
Charging is exceptional — 80W (US) / 100W (international) wired fully charges in roughly 30 minutes (owners report ~40 min real-world), plus 50W wireless.
The 6.82-inch LTPO AMOLED is among the best phone displays — 120Hz, Dolby Vision, and a 4,500-nit peak that stays readable in harsh sunlight.
Detailed Comparison
Design & Build
OnePlus 12
Premium curved glass-sandwich build with a polarising circular Hasselblad camera island. Reviewers and owners love the in-hand feel; the camera bump and curved edges divide opinion.
The OnePlus 12 feels great in hand right out of the box — curved front and rear glass and a smooth matte rear panel make it comfortable to hold without flat edges digging in.
The familiar circular rear camera housing on a glass-sandwich design stands out with character and contributes significantly to the phone's premium appeal.
The camera module is strikingly bulky and carries a Hasselblad watermark unless you opt to remove it.
Reddit reaction to the design is split — 'the ugliest camera layout in the game' versus owners who find the Flowy Emerald finish gorgeous.
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OxygenOS has regressed and software-update longevity lags Samsung/Google — a recurring concern that makes some buyers hesitate.
The curved screen frustrates ergonomically and makes finding a good screen protector a genuine, repeated headache.
US connectivity is compromised — no Forced SA/VoNR support and occasional Wi-Fi-to-mobile-data handoff bugs.
The camera island is strikingly bulky and the periscope struggles in low light versus the main sensor.
OnePlus 15T
What Reviewers Agree On
The 7,500 mAh silicon-carbon 'Glacier' battery is unprecedented in a 6.32-inch body and delivers roughly 1.5 days of real-world endurance — easily the longest battery life in the compact-flagship class.
Build quality is genuine flagship-grade: metal frame, IP66/IP68/IP69/IP69K dust + water resistance, ultrasonic in-display fingerprint sensor, and a 91% screen-to-body ratio with ~1.1 mm symmetric bezels.
The 6.32-inch 165 Hz 1.5K AMOLED reaches the advertised 1,800 nits in standard measurement and is marketed up to 3,600 nits peak — making it the only true 165 Hz compact-flagship display on the market.
Snapdragon 8 Elite Gen 5 + 16GB LPDDR5X Ultra Pro RAM hits Geekbench multi-core ~10,976 and 3DMark Wild Life Unlimited ~29,901 — top-tier flagship synthetic performance in a sub-200g chassis.
100W wired SuperVOOC and 50W wireless charging mean even the giant battery refills fast.
The new 3.5x periscope telephoto with OIS is a meaningful step up from the OnePlus 13T's limited 2x zoom and is well-suited to portraits at the classic 85 mm focal length.
Deal Breakers
China-only launch with no confirmed global release — ColorOS instead of OxygenOS, no eSIM support, no WearOS support, and missing European LTE band 20 and band 32 make it a compromise outside China.
Notebookcheck measured pronounced sustained-performance throttling of over 50% in 3DMark stress tests, with surface temperatures climbing past 46 °C; SuperSaf hit 50 °C on the back during Wildlife Extreme and saw scores drop from 6,990 to 3,743 inside a single loop.
No ultrawide camera at all — the 'triple camera' is just main + 16MP front + 3.5x periscope telephoto, which is a downgrade versus the OnePlus 15 for anyone who shoots landscapes, group photos or wide-angle video.
Charging port is still USB 2.0 in 2026, which SuperSaf calls 'a choice and not a good one' on a flagship-tier device at this price.
No built-in MagSafe-style magnets — wireless-charging accessories require a separate magnetic case to align properly.
Snapdragon 8 Gen 3 with up to 16/24GB RAM delivers top-tier performance that still feels fast a year-plus later.
Cons
OxygenOS has regressed and software-update longevity lags Samsung/Google — a recurring concern that makes some buyers hesitate.
The curved screen frustrates ergonomically and makes finding a good screen protector a genuine, repeated headache.
US connectivity is compromised — no Forced SA/VoNR support and occasional Wi-Fi-to-mobile-data handoff bugs.
The camera island is strikingly bulky and the periscope struggles in low light versus the main sensor.
OnePlus 15T
Pros
The 7,500 mAh silicon-carbon 'Glacier' battery is unprecedented in a 6.32-inch body and delivers roughly 1.5 days of real-world endurance — easily the longest battery life in the compact-flagship class.
Build quality is genuine flagship-grade: metal frame, IP66/IP68/IP69/IP69K dust + water resistance, ultrasonic in-display fingerprint sensor, and a 91% screen-to-body ratio with ~1.1 mm symmetric bezels.
The 6.32-inch 165 Hz 1.5K AMOLED reaches the advertised 1,800 nits in standard measurement and is marketed up to 3,600 nits peak — making it the only true 165 Hz compact-flagship display on the market.
Snapdragon 8 Elite Gen 5 + 16GB LPDDR5X Ultra Pro RAM hits Geekbench multi-core ~10,976 and 3DMark Wild Life Unlimited ~29,901 — top-tier flagship synthetic performance in a sub-200g chassis.
100W wired SuperVOOC and 50W wireless charging mean even the giant battery refills fast.
The new 3.5x periscope telephoto with OIS is a meaningful step up from the OnePlus 13T's limited 2x zoom and is well-suited to portraits at the classic 85 mm focal length.
Cons
China-only launch with no confirmed global release — ColorOS instead of OxygenOS, no eSIM support, no WearOS support, and missing European LTE band 20 and band 32 make it a compromise outside China.
Notebookcheck measured pronounced sustained-performance throttling of over 50% in 3DMark stress tests, with surface temperatures climbing past 46 °C; SuperSaf hit 50 °C on the back during Wildlife Extreme and saw scores drop from 6,990 to 3,743 inside a single loop.
No ultrawide camera at all — the 'triple camera' is just main + 16MP front + 3.5x periscope telephoto, which is a downgrade versus the OnePlus 15 for anyone who shoots landscapes, group photos or wide-angle video.
Charging port is still USB 2.0 in 2026, which SuperSaf calls 'a choice and not a good one' on a flagship-tier device at this price.
No built-in MagSafe-style magnets — wireless-charging accessories require a separate magnetic case to align properly.
Versus the S24+, owners note the Samsung is cleaner, thinner and lighter — the OnePlus is the chunkier of the two.
OnePlus 15T
OnePlus inherits the design language of the OnePlus 15 — metal frame, glass back, micro-arc oxidation finish on the rails — and shrinks it into a 6.32-inch, 194g body that's roughly iPhone 17-sized but with more than twice the battery capacity. IP66/IP68/IP69/IP69K rating, ultrasonic fingerprint sensor and ~1.1mm symmetric bezels are unambiguous flagship moves. Reviewers debate whether 6.32-inch genuinely counts as compact in 2026.
Same premium design as the OnePlus 15 — metal frame, glass back, IP69 water resistance — feels high-quality in the hand at just 194g.
Dimensions and weight are similar to an iPhone 17, but the 15T packs more than twice the battery capacity with a ~91% screen-to-body ratio.
Full-level water resistance and a fast ultrasonic fingerprint sensor make the 15T noticeably more confident outdoors than the OnePlus 13T was.
The metal frame uses a micro-arc oxidation process with a 50/50 weight distribution — it doesn't feel top-heavy and one-handed use is genuinely comfortable.
The pure cocoa colorway is OnePlus's first-ever brown finish and stands out next to the standard 15's black/violet/sandstorm options.
Calling a 6.32-inch phone 'compact' just normalizes the new baseline — at this size the only thing keeping it small is OnePlus refusing to make the body any larger, not any genuine effort to shrink the footprint.
r/gadgets commenters reject the compact framing outright — '6.3" screen is NOT compact' is the top reply on the official-first-look thread, with multiple users asking for a true 5.x-inch option.
Display
OnePlus 12
A 6.82-inch LTPO AMOLED with 120Hz, Dolby Vision, 2160Hz PWM dimming and a 4,500-nit peak — widely rated one of the best phone panels available, with the only knock being curved-edge ergonomics.
These are some of the best OLED panels you can get on a smartphone right now — and it gets brighter than the iPhone 15 Pro at 4K HDR YouTube playback.
HBM mode delivers excellent outdoor visibility even under harsh sunlight, and the QHD panel is noticeably sharper than a 1080p screen.
Notebookcheck rates the display the standout — scoring it 114% in their weighted display metric.
The curved edges add a premium flair with good palm rejection, but finding screen protectors is a real headache — most UV guards bubble within a month.
OnePlus 15T
The 6.32-inch 165 Hz 1.5K AMOLED panel is the only true 165 Hz compact-flagship display on the market and pairs that refresh rate with a measured 1,800 nits brightness, 460 ppi pixel density, Crystal Shield Glass, and HDR10+/Dolby Vision support. Native 165 Hz support in popular FPS games is a real differentiator. Notebookcheck flags 120.7 Hz PWM dimming that can cause eyestrain for sensitive users.
The 6.32-inch 165 Hz AMOLED panel achieves a very good 460 ppi pixel density and the advertised maximum brightness of 1,800 nits in standard measurement.
Display sharpness is plenty competent — sharp, smooth, and easily one of the strongest spec sheets you can get on a compact phone.
Native 165 Hz support in COD, Delta Force and Peacekeeper Elite makes this the only small-screen flagship pushing a full 165 Hz gaming experience.
OnePlus claims up to 3,600 nits peak brightness — even on a playground in direct sunlight you can still see everything clearly, no squinting required.
Specifications confirm a 6.32-inch 1.5K (1216 × 2640) resolution with 165 Hz refresh — a configuration unique to the 15T in the compact class.
Performance
OnePlus 12
Snapdragon 8 Gen 3 with up to 16/24GB RAM makes it 'uber-powerful' — top-tier speed that holds up well over time, with only thermal-throttled gaming as a caveat.
Powered by the high-end Snapdragon 8 Gen 3 with up to 16GB of RAM — 'uber-powerful' and one of the best phones money can buy.
Snapdragon 8 Gen 3 with 12GB LPDDR5X and UFS 4.0 keeps the phone feeling as fast in 2025 as it did on day one.
Notebookcheck scores performance 86% — strong, with the OnePlus 12 carrying the Snapdragon 8 Gen 3 (the 12R uses the older Gen 2).
Gaming is smooth and lag-free, but the phone restricts frame rates to 60fps once temperatures hit 40°C.
OnePlus 15T
Snapdragon 8 Elite Gen 5 paired with 12-16GB LPDDR5X Ultra Pro RAM delivers flagship synthetic scores — Notebookcheck recorded Geekbench multi-core 10,976 and 3DMark Wild Life Unlimited 29,901, on par with the larger Xiaomi 17 and Honor Magic8 Pro Air. The problem is sustained: in the 3DMark Wild Life stress test the GPU drops over 50% and the back of the phone hits 50 °C, which both Notebookcheck and SuperSaf flag as a deal-breaker for long gaming sessions.
Geekbench 6 multi-core hits 10,976 — flagship-tier and within 1% of the average 8 Elite Gen 5 result, so there is no compromise on the chipset versus larger phones.
3DMark Wild Life Unlimited hits 29,901 — 5% above the 8 Elite Gen 5 average and ahead of the Xiaomi 17 with the same chip.
In the 3DMark stress tests the OnePlus 15T shows a sharp drop in performance of over 50%, which significantly lowers our rating.
Wildlife Extreme stress test scores swung from 6,990 best loop to 3,743 worst loop in a single run — the chart is 'quite a bit of a bumpy ride' and performance mode did nothing to stabilize it.
Surface temperatures hit 48.3 °C on the back during stress testing and continued climbing to 50 °C near the camera bump — about 45 °C internal — which seems to be the phone's thermal limit.
Genshin Impact averaged 60.3 fps over 30 minutes at just 3.2 W power draw, with the phone staying cool to the touch — and Peacekeeper Elite pushed 164.5 fps thanks to native 165 Hz support.
Battery & Charging
OnePlus 12
The 5,400mAh battery is the phone's most-praised feature — multi-day-feeling endurance with 6–10 hours of screen-on time — paired with class-leading 80W (US) / 100W wired and 50W wireless charging.
The huge 5,400mAh battery is one of the key reasons the OnePlus 12 excels in long-term use, consistently delivering 6–7 hours of screen-on time at a constant 120Hz.
It easily lasts 9 to 10 hours of screen time on moderate use; at 6 months, 7–8 hours with all features on.
Charging spec: 100W wired 100% in 26 min (international) / 80W in 30 min (USA), plus 50W wireless to full in 55 min.
Real-world the battery fully charges from ~5% to 100% in about 40 minutes (occasionally up to 50) — and OnePlus includes the 100W SuperVOOC adapter in the box.
Even owners who sold the phone agree the one thing it did better than any other phone they've used is the battery.
OnePlus 15T
This is the section the OnePlus 15T was built to win. The 7,500 mAh silicon-carbon 'Glacier' cell is the largest ever fitted to a true compact phone — 50% bigger than the iPhone 17's pack in a similar footprint. Notebookcheck measured roughly 1.5 days of real-world endurance at 150 cd/m². Wired charging tops out at 100 W, wireless at 50 W. The only friction points are the missing built-in magnets for MagSafe-style alignment and the still-USB-2.0 port.
OnePlus relies on a silicon-carbon-based battery with a large capacity of 7,500 mAh for its mini flagship — in our practical battery test at 150 cd/m² brightness, the 15T achieved an excellent battery life of nearly 1.5 days.
9to5Google's preview confirms the 7,500 mAh cell carries the same 'Glacier' moniker as the OnePlus 15's battery, so the silicon-carbon structure is here too — 200 mAh more than the larger sibling.
Even though the phone keeps the same compact size, it now packs a massive 7,500 mAh battery — to put that into perspective, the iPhone 17 Pro Max only has around 5,000 mAh, and this is a 6.32-inch phone.
Battery life is wild for a phone this size and is actually a hair bigger than the one in the OnePlus 15, which has a noticeably larger footprint.
Software-support window is uncertain: OnePlus has not committed to a specific update timeline for the Chinese-market 15T, and the global OnePlus 15 already commits to only 4 years of major Android upgrades — well behind Samsung and Google's 7-year promises.
Software-support window is uncertain: OnePlus has not committed to a specific update timeline for the Chinese-market 15T, and the global OnePlus 15 already commits to only 4 years of major Android upgrades — well behind Samsung and Google's 7-year promises.
Display backlight flickers at just 120.7 Hz under PWM dimming — low enough that the flickering may cause eyestrain and headaches for sensitive users after extended use.
r/Android's reviewer thread flags the same thermal issue directly: 'Gets kinda hot, over 50 degrees in the corner. This is with its very heavy throttling.'
100W SuperVOOC wired charging and 50W wireless mean even the huge cell refills fast — getting through two full days on a single charge feels totally realistic.
There is no native magnetic Qi alignment — wireless charging works, but accessories require a separate magnetic case for MagSafe-style snap-on functionality.
r/Android's reaction to the battery is unambiguous — 'Incredible battery life makes the compact smartphone competition pale in comparison' is the actual review-thread headline.
