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.
Pros & Cons
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.
Detailed Comparison
Design & Build
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.
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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.
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.
Samsung Galaxy S25+
What Reviewers Agree On
The Snapdragon 8 Elite for Galaxy delivers fast, fluid performance with noticeably better thermals than the S24+ — gaming sessions don't stutter and the phone stays cooler under load.
The 6.7-inch QHD+ Dynamic AMOLED 2X with 120Hz and 2,600-nit peak brightness is one of the best displays on any smartphone, full stop.
Battery life on the unchanged 4,900 mAh cell easily lasts a full day, with most reviewers ending around 25-40% remaining.
Samsung's seven years of OS upgrades and security patches is a best-in-industry commitment that justifies the long-term investment.
One UI 7 is Samsung's most polished software ever — the split Quick Settings/notifications shade, snappy animations and Circle to Search are genuine improvements.
Build quality is excellent and the body is meaningfully slimmer (7.3mm) and lighter (190g) than the S24+ despite identical screen size.
At $999 it's $300 cheaper than the S25 Ultra while sharing the chip, RAM, display tech, AI features and update window — it's the value pick of the S25 lineup if you want a big phone.
Deal Breakers
The camera hardware is entirely carried over from the S24+ (and S23+) — same 50MP main, 12MP ultrawide, 10MP 3x telephoto — and now lags rivals like the OnePlus 13 and Pixel 9 Pro that ship 50MP ultrawides and 5x periscope tele lenses at the same price.
Qi2 wireless charging is 'Qi2 Ready' only — the phone has no built-in magnets, so MagSafe-style accessories require buying a separate magnetic case, and third-party cases are hit-or-miss.
Galaxy AI features are guaranteed free only through the end of 2025, with Samsung hinting at a future paid tier and refusing to commit to pricing.
Virtually nothing has changed externally from the S24+ — same shape, same camera island layout, even the same colors-of-the-year feel. Reviewers from The Verge, Wired, Trusted Reviews and 9to5Google all note this directly.
The 3x optical telephoto is a clear weak spot at $1,000 — rivals at the same price now offer 5x periscope cameras that capture noticeably more detail at longer zoom ranges.
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.
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.
Samsung Galaxy S25+
Pros
The Snapdragon 8 Elite for Galaxy delivers fast, fluid performance with noticeably better thermals than the S24+ — gaming sessions don't stutter and the phone stays cooler under load.
The 6.7-inch QHD+ Dynamic AMOLED 2X with 120Hz and 2,600-nit peak brightness is one of the best displays on any smartphone, full stop.
Battery life on the unchanged 4,900 mAh cell easily lasts a full day, with most reviewers ending around 25-40% remaining.
Samsung's seven years of OS upgrades and security patches is a best-in-industry commitment that justifies the long-term investment.
One UI 7 is Samsung's most polished software ever — the split Quick Settings/notifications shade, snappy animations and Circle to Search are genuine improvements.
Build quality is excellent and the body is meaningfully slimmer (7.3mm) and lighter (190g) than the S24+ despite identical screen size.
At $999 it's $300 cheaper than the S25 Ultra while sharing the chip, RAM, display tech, AI features and update window — it's the value pick of the S25 lineup if you want a big phone.
Cons
The camera hardware is entirely carried over from the S24+ (and S23+) — same 50MP main, 12MP ultrawide, 10MP 3x telephoto — and now lags rivals like the OnePlus 13 and Pixel 9 Pro that ship 50MP ultrawides and 5x periscope tele lenses at the same price.
Qi2 wireless charging is 'Qi2 Ready' only — the phone has no built-in magnets, so MagSafe-style accessories require buying a separate magnetic case, and third-party cases are hit-or-miss.
Galaxy AI features are guaranteed free only through the end of 2025, with Samsung hinting at a future paid tier and refusing to commit to pricing.
Virtually nothing has changed externally from the S24+ — same shape, same camera island layout, even the same colors-of-the-year feel. Reviewers from The Verge, Wired, Trusted Reviews and 9to5Google all note this directly.
The 3x optical telephoto is a clear weak spot at $1,000 — rivals at the same price now offer 5x periscope cameras that capture noticeably more detail at longer zoom ranges.
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.
Samsung Galaxy S25+
Samsung slimmed the S25+ to 7.3mm and dropped 6-7g in weight versus the S24+, but otherwise the design is unchanged — same flat aluminum frame, same Gorilla Glass Victus 2 front and back, same IP68 rating, same camera island. Reviewers split between 'this is fine, the design didn't need fixing' and 'this is the S24s.' Notably, the S25+ does not get the Ultra's titanium frame or Gorilla Armor 2 anti-reflective glass.
The design is basically the same as last go-around — flat edges, curved corners and Samsung's signature stoplight rear camera arrangement, with the flat edges making the phone feel more secure in hand.
Both S25 and S25+ are 0.4mm thinner than their predecessors — the slimmest Galaxy phones in nearly a decade barring foldables.
Comparing to the OnePlus 13 and Pixel 9 Pro XL, the Galaxy S25 Plus definitely feels like the slimmest device — slim 7.3mm chassis with weight dropping to 190g.
The Galaxy S25 Plus looks like the Galaxy S24 Plus and the other Plus phones that came before — Samsung is hoping sleek new colors help it stand out.
Within two days of using the Navy color, the glass back gathered scratches — durability of the glass is questionable.
Samsung has reached the design that's the least offensive to anyone and looks the most modern — the design is sound and looks good even if it isn't exciting.
Build quality is impeccable — the smartphone is nice and light in your hands and has a very high-quality feel to it.
From the outside these phones are almost indistinguishable from the last ones — this is a Galaxy S 24s, a spec bump with the same design.
The S25 Plus doesn't get the Ultra's Gorilla Armor 2 glass — it's not as tough and doesn't have the same anti-reflective properties, but overall still feels premium.
The Coral Red online-exclusive color is the standout this year — back is a bright matte red with darker blood-red edges, a contrast you don't get on the standard colors.
Display
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.
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.
Samsung Galaxy S25+
Near-universal praise for the 6.7-inch Dynamic AMOLED 2X — 1-120Hz LTPO, 1440p resolution, 2,600-nit peak brightness, HDR10+. Two important caveats: this panel does NOT get the Gorilla Armor 2 anti-reflective coating that defines the Ultra's display, and PWM dimming is conservative at 480Hz, which Notebookcheck flags as potentially bothersome to sensitive eyes.
The 6.7-inch panel has a bump up to 1440p resolution from the 1080p on the S25 — the extra resolution is necessary with such a big display.
Samsung's displays are vivid, bright and gorgeous with refresh rates up to 120Hz — the bigger S25+ has a higher-res QHD+ 6.7-inch display.
It's bright, it's vibrant and it makes all your content look great — Samsung's reputation for displays remains intact.
The display lacks the anti-reflective coating from the Galaxy S25 Ultra — it still features the same 120Hz dynamic refresh rate and 1440 x 3120 resolution as last year.
Camera
OnePlus 15T
OnePlus has dropped the Hasselblad partnership (now Oppo-exclusive) and built the 15T camera around two 50MP sensors — a main with a 1/1.56-inch Sony IMX906 and OIS, plus a new 3.5x periscope telephoto with OIS at the classic 85mm portrait focal length. There is no ultrawide. Notebookcheck still rates the system 'a class above' the iPhone 17, but reviewers agree this is the area where the 15T's compact-and-cheap positioning is most visible — sensor sizes are small, sharpness and dynamic range trail genuine top-tier flagships, and the OnePlus 15 / Oppo Find X9 Pro siblings keep the better imaging.
The new 3.5x periscope telephoto delivers a classic 85 mm focal length perfect for portraits — a huge step forward from the OnePlus 13T's limited 2x zoom.
OnePlus has confirmed the headline upgrade is a LUMO periscope telephoto with both improved hardware and improved algorithms, focused on stronger zoom and better atmospheric portraits.
Despite the small 1/1.56-inch main sensor, the 15T's daylight and low-light photos are 'still a class above' the iPhone 17 in side-by-side comparison.
The 50MP main sensor lacks sharpness and dynamics — good photos are possible in both daylight and dark, but top quality looks different.
There is no ultra-wide-angle camera at all — the omission is partly excused by the new periscope, but it's a meaningful downgrade versus the OnePlus 15's triple-camera system.
The telephoto produces unstable results inconsistent with the main sensor — at night the camera struggles with depth perception and doesn't always switch to the periscope when it should.
The cooperation with Hasselblad is now Oppo-exclusive, and the OnePlus 15T's built-in image sensors are quite small and therefore not very bright.
The selfie camera drops from 32MP on the OnePlus 15 to 16MP on the 15T — a small but real downgrade for anyone who shoots a lot of front-facing video.
Samsung Galaxy S25+
The camera hardware is entirely carried over: 50MP f/1.8 OIS main, 12MP f/2.2 ultrawide, 10MP 3x telephoto, 12MP selfie. Same setup as the S24+ and S23+. The only changes are in image processing via the new ISP and Galaxy AI editing tools. Reviewers split: GSMArena, Trusted Reviews and 9to5Google call results 'good'; Wired and Digital Trends call the camera 'inferior to its main competitors' at this price. The 3x telephoto and 12MP ultrawide are the consensus weak points versus the OnePlus 13, Pixel 9 Pro and iPhone 16 Pro — all of which now ship 5x telephotos and ~48-50MP ultrawides.
It's the same camera system as the one in the S24 series, minus some software tweaks — doesn't have the upgraded ultrawide in the S25 Ultra, but that's not a huge loss.
Why is the $1,000 S25+ still stuck with a 3X optical zoom telephoto when the $1,000 iPhone 16 Pro was upgraded to a 5X optical camera?
The unchanged 12-MP ultrawide on the non-Ultra phones is lackluster and the cameras feel static — the $800 Pixel 9 and $1,000 iPhone 16 Pro both have 48-MP ultrawides.
The Galaxy S25 Plus camera is inferior to each of its main competitors — significantly outperformed by the OnePlus 13 in head-to-head testing.
Battery & Charging
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.
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.
Samsung Galaxy S25+
Same 4,900 mAh cell as the S24+, same 45W wired and 15W wireless charging caps. The more efficient Snapdragon 8 Elite for Galaxy pushes real-world endurance comfortably to a full day with 25-40% remaining. Real charge time is ~75 minutes wall-to-100% on a 65W charger. The Qi2 Ready implementation without built-in magnets is the consistent frustration, and reviewers note that OnePlus 13's silicon-carbon battery and ~40-minute full charge time make Samsung look complacent here.
The 4,900mAh battery goes all day even with more pixels to light up — frequently ended a day with around 40 to 30 percent battery left and roughly five to six hours of screen-on time.
On several occasions the S25 Plus lasted over 24 hours on a single charge with at least six hours of screen-on time and 10-20% remaining — battery life can satisfy even demanding users.
A quick ten-minute top-up nets around 25%, 50% in 25 minutes, 75% in 40 minutes, and a full charge averages about 1 hour 10 minutes — fastest test was 64 minutes.
Pales in comparison to rivals like the OnePlus 13 which achieves a full charge in under 40 minutes — OnePlus 13's 50W magnetic charger is effectively faster than the S25 Plus on a 45W charger.
Three buying alternatives at $900-$1,000 — OnePlus 13, Pixel 9 Pro and iPhone 16 Pro — each offer something the S25+ doesn't (silicon-carbon battery, best-in-class camera, ecosystem).
Three buying alternatives at $900-$1,000 — OnePlus 13, Pixel 9 Pro and iPhone 16 Pro — each offer something the S25+ doesn't (silicon-carbon battery, best-in-class camera, ecosystem).
The bright LTPO display is a clear pro, but PWM dimming is only at 480 Hz, which can bother sensitive eyes.
Still incredibly bright at 2,600 nits like the Ultra, still supports HDR10+, and still has the impressive color accuracy Samsung is known for — one of the best displays on a smartphone today.
ProScaler tech upscales lower-quality photo and video content to look better at the panel's highest resolution — but it's hard to see whether anything is going on without an old device side-by-side.
Slimmer bezels with 1440p resolution and a 120Hz adaptive refresh rate — the LTPO AMOLED panel hits 2,600 nits peak.
Samsung's penchant for slightly overboard sharpening is still visible in the main camera — Samsung is staying true to its oversaturated colors but the portrait mode remains strong.
Samsung is sticking to a 3x optical lens when rivals are offering 5x optical — the Pixel 9 Pro XL is noticeably better at longer zooms with substantial difference in quality throughout the zoom range.
All four cameras are a match to the Galaxy S24+'s — Samsung is relying on the new ISP rather than new hardware to improve quality.
Samsung has heard cries for better image production — photos come out clear and detailed without that grainy textured look, with nice true-to-real-world colors and snappy capture.
If you're hoping for a major camera upgrade, you'll be disappointed — Samsung stuck with the same camera setup as last year and the only real changes are software and processing.
Samsung's front camera is good with great edge detection for portrait blurring — don't write off the S25 Plus because of the 12-megapixel front sensor.
Qi2 is one of the most exciting features coming to Android in 2025, but the S25 Plus is Qi2 Ready only — no built-in magnets, so you need a separate magnetic case and third-party options are hit-or-miss.
Galaxy S25+ carries slightly better battery life than the S24+ — a full day with around 25% left over by the evening, versus the S24+ ending around 20%.
Connecting to a 65W charger, after 15 minutes nearly 45%, after 30 minutes 72% — Samsung's slower 45W cap is a deliberate trade for long-term battery health.
An r/Android upgrader said it best: 'I just wish it was using the new silicon lithium batteries that OnePlus has' — Samsung's choice to stick with the same 4,900 mAh cell is the most-criticized hardware decision in the lineup.
