OnePlus 15 vs OnePlus 15T

OnePlus 15

A 6.78-inch flat LTPO AMOLED that drops the OnePlus 13's QHD+ for a 1.5K (FHD+) panel but adds a 165Hz refresh rate and a dedicated touch-response chip. Lab-measured brightness (~1,200–1,950 nits depending on test) trails the iPhone, but reviewers find it bright, smooth and a standout for gaming.

• The OnePlus 15 has a slightly smaller 6.78-inch display with a lower 1272×2772 resolution, down to FHD+ from QHD+, but it hit 1,940 nits at 10% fill and 2,187 nits at 75% fill, and confirmed 165fps gaming.
• OnePlus claims 1,800 nits HBM; lab testing reached 1,951 nits in a 1% window, and the display refreshes up to 165Hz in gaming mode.
• Wired charging is now 120W and the screen reaches 1,800 nits full-screen; the bezels are even thinner at just 1.15mm and the LTPO panel genuinely drops to 1Hz.
• Independent testing measured peak brightness of 1,222 nits — an improvement over the OnePlus 13's ~1,140 nits but still trailing the iPhone 17 Pro Max by a wide margin.
• For gaming it stands out like no other phone — incredibly bright and colourful with the 165Hz refresh.
• It uses a dedicated display/touch-response chip that samples touch inputs at 3,200Hz, and the touch experience is noticeably better than the iPhone 17's.

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.

OnePlus 15

Snapdragon 8 Elite Gen 5 with up to 24GB RAM and a custom tri-chip setup — it tops benchmark charts, beats the iPhone's A19 in multi-core and runs games at up to 165fps. The asterisk is sustained thermals: day-to-day it stays cool, but extended stress benchmarks repeatedly overheat and shut down.

• Across a benchmark suite the OnePlus 15 performed 19–22% better than the OnePlus 13 and 14–19% better than the S25 Edge, and outperformed the OnePlus 13 by 10% in the stress test.
• Geekbench shows the Snapdragon 8 Elite Gen 5 easily beating the A19 with a multi-core score over 11,000; in Genshin Impact it averaged 119fps vs the iPhone 17's 107fps over 30 minutes, running cooler at under 36°C.
• BGMI runs native 120fps (165fps with frame interpolation) at under 35°C and under 4W power draw, making it one of the best phones for gaming with its 165Hz panel and bypass charging.
• In a 15-minute 20-thread CPU throttle test it throttled to 82% of max performance at a controlled 34–35°C with only 3% battery drain.
• It flashed an overheating warning after barely 8 minutes of a peak-load benchmark, shutting it down and disabling the flashlight and hotspot — though in day-to-day use it runs smoothly with only moderate warmth.
• In Wuthering Waves it held 60fps until ~46°C then capped to 45fps and recovered after ~3 minutes, averaging 57fps and 7W — heavy sustained 3D load is where the thermal limits show.

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.

OnePlus 15

The single biggest reason to buy this phone. A 7,300mAh silicon-carbon cell delivers the best smartphone battery life ever measured — a record ~25-hour drain test and 2–2.5 days of real use — with 120W wired charging refilling it in ~40–51 minutes plus 50W wireless.

• The OnePlus 15 lasted an insane 25 hours 13 minutes in the drain test — officially the best phone for battery life, beating the iPhone 17 Pro Max's 17h54m and lasting over 10 hours longer than the Galaxy S25 Ultra.
• The OnePlus 15 just delivered the best battery life we've ever measured — a very, very good phone and a strong value pick for late 2025.
• In real use it averaged 2 days 11 hours on a full charge, and 7–8 hours of screen-on time is effortless thanks to the 7,300mAh cell and aggressive standby management.
• 120W SuperVOOC charged 1→50% in 22 minutes, 75% in 36 minutes and a full 1→100% in 51 minutes; other tests hit a full charge in roughly 40–43 minutes.
• It also keeps 50W AirVOOC wireless charging — about 30% in 30 minutes and ~85% in 92 minutes, with the device staying cool around 34–35°C.
• The battery is so large you could cap charging at 85% to preserve long-term health and still have more capacity than a Galaxy S25 Ultra at 100%.

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.

OnePlus 15

OxygenOS 16 on Android 16 — clean and fast, and a clear AI redemption after the OnePlus 13: Plus Mind (via the new plus key), AI Eraser, plus Google's Gemini Live and Circle to Search. The reservation is the 4-year OS / 6-year security commitment and the lingering uncertainty over OnePlus's regional operations.

• OnePlus redeems the OnePlus 13's lack of AI with OxygenOS 16 — AI Eraser, the Pixel-Screenshots-like Plus Mind via the dedicated plus key, plus Gemini Live and Circle to Search.
• Under all the AI trends OxygenOS still feels like OxygenOS — clean, light and more customisable than a Pixel, with one of the best dark-icon implementations in the segment.
• OnePlus commits to 4 years of major Android updates and 6 years of security patches — not elite, but solid for a phone at this price, though it trails Google and Samsung's 7 years.
• OnePlus does its usual ~1-month post-launch update that fixes some camera issues, and despite overheating reports two reviewers couldn't get their units to overheat in normal use.
• When you buy a phone like the OnePlus 15 you're trusting the software too — and OnePlus's regional operational uncertainty (e.g., India) is a real long-term consideration, though it has promised continued updates.
• The Mind Space feature is a genuine standout that the reviewer uses a lot, and OxygenOS's gaming tools (Game Assist) meaningfully enhance the experience.

OnePlus 15T

The OnePlus 15T ships with ColorOS 16 on Android 16 in China rather than the global OxygenOS, though the two skins are now nearly identical in feel. Update commitments are unclear — OnePlus doesn't publish a timeline for Chinese-market hardware, and even the global OnePlus 15 only commits to 4 years of major Android upgrades. Mind Space (AI-powered productivity vault) and Gemini integration are the headline software features.

• ColorOS 16 comes pre-installed on the 15T instead of OxygenOS — but the differences are minor overall, with German language and Android Auto supported, though no WearOS watches or eSIMs.
• There are question marks over the duration of the updates provided — the manufacturer does not usually provide any information on this for China, though typically a OnePlus 15-class phone should receive security updates for six years.
• OxygenOS 16 (and ColorOS 16 by extension) integrates Gemini with Mind Space — you can ask Gemini about any saved memory and it accesses local content to perform tasks, making it the best on-phone AI integration we have seen.
• Mind Space is the headline AI feature — a digital vault that takes a screenshot of important content and saves it as a card with URL, summary, title and hashtags for contextual search.