OnePlus 15 Review: 7,300mAh, 120W, and No Compromise on Size

The trilemma, solved.

Big battery, fast charging, sensible size: for most of the last decade a premium phone could give you 2. The OnePlus 15 gives you all 3, and it is worth slowing down to see how unusual that is.

7,300mAh, split across 2 cells, is more than many phones that sell on battery alone, and this one sells on everything. 120W wired charging fills it in about 39 minutes by OnePlus's own figure, and the 120W charger is in the box, which in 2026 is a small act of generosity. 50W wireless charging, with OnePlus's own magnetic charger, is faster than most phones manage with a cable.

And the body holding all that is 8.1mm to 8.2mm thick and 211g to 215g, depending on the colour. That is not light. It is, though, the weight of a normal flagship rather than the brick this much battery used to require. If your phone has ever died at 7pm on a wedding day, this is the paragraph that sells it.

Fast, tough, and finally serious about zoom.

The chip is Qualcomm's best. The Snapdragon 8 Elite Gen 5, with LPDDR5X Ultra memory and UFS 4.1 storage. On paper there is nothing it will not run comfortably for years; the iQOO 15 runs the same chip, which is why section 04 matters.

The screen trades pixels for speed, deliberately. A 6.78-inch LTPO AMOLED at 1.5K, adaptive from 1 to 120Hz in daily use, and up to 165Hz in supported games. That last number is for gamers, and it is a genuine edge for them. High-brightness mode reaches 1,800 nits.

4 IP ratings, not 1. IP66 for jets of water, IP68 for submersion, IP69 and IP69K for high-pressure hot water. You will never pressure-wash your phone. But a monsoon in Mumbai is a kind of pressure wash, and none of the rivals in section 04 carries all 4 ratings.

The cameras are 3 real cameras. A 50MP Sony IMX906 main sensor with OIS, a 50MP ultra-wide, and a 50MP periscope telephoto at 3.5x, also stabilised. A periscope used to be a Rs. 1,00,000 feature. Here it is simply part of the kit. Video goes to 8K at 30fps; the front camera is 32MP with autofocus, which is what keeps a selfie sharp when you are not exactly where the phone expects your face to be.

And the small delights. An ultrasonic in-display fingerprint reader. An IR blaster, a flagship rarity. Wi-Fi 7, eSIM support, and the Plus Key, a programmable button on the side.

Rs. 13,000, and a few lines on the sheet.

The price moved, and the street went with it. The OnePlus 15 launched at Rs. 72,999 for 12GB and 256GB, the launch price. OnePlus has since raised the list to Rs. 85,999, and the 16GB and 512GB model from Rs. 79,999 to Rs. 93,999. On 18 October the base model listed at about Rs. 85,000 at major retailers, so unlike some flagships this year, the shops did not undercut the maker's new price. You are paying the 2026 price for a November 2025 phone. Nothing in the phone has changed, and that is both the complaint and the reassurance.

The screen is not the sharpest at this money. 1.5K at 450 pixels per inch is very good. The iQOO 15 runs 2K at 508, and in high-brightness mode it reaches 2,600 nits against this phone's 1,800. If you read and watch more than you game, that is a real gap.

The update promise is good, not the best. 4 OS upgrades and 6 years of security patches, as reported at launch, which takes OS support to late 2029. Samsung and Google promise 7 years on their flagships, and the iQOO 15 promises 5 upgrades and 7 years.

The telephoto sensor is small. 3.5x is the longer reach on this shelf, but its sensor is smaller than the iQOO's 3x lens, and a smaller sensor gathers less light at night. Reach and low-light quality pull in opposite directions here; which matters more depends on whether you zoom at a stadium or across a dim restaurant.

The shelf around it, and what each phone is for.

iQOO 15. The same chip, the same Rs. 72,999 launch price, the same Rs. 85,999 list price today, and listings between Rs. 83,000 and Rs. 86,000 on 18 October. It is the closest rival this phone has, close enough that the choice comes down to 4 rows, which our OnePlus 15 vs iQOO 15 comparison works through. In short: the iQOO has the better screen and the longer promise, the OnePlus the bigger battery and the tougher ratings.

Samsung Galaxy S26. About Rs. 88,000 on live listings. A compact phone with Samsung's 7-year promise, and nowhere near this battery. Our Galaxy S26 review has it.

Apple iPhone 17. About Rs. 87,000 at 1 major retailer, Rs. 13,000 under Apple's own price. Light, a lovely screen, 2 strong cameras, a 3,692mAh battery and no charger in the box. See our iPhone 17 review.

OnePlus 15R. Rs. 59,000 to Rs. 62,000, and our OnePlus 15R review explains why its own price rises took the shine off it. If Rs. 85,000 is too much, it is the family's cheaper door, not a bargain one.