The OnePlus 15 packs a genuinely massive 7,300mAh battery, and yes, it actually delivers the two-day battery life OnePlus promises. This isn't marketing fluff. Reviewers who've tested the phone consistently confirm you can go two full days on a single charge with normal use.

Here's what that looks like in practice:

If you're a moderate user who checks social media, sends messages, takes some photos, and watches a bit of YouTube, you'll easily hit that two-day mark. If you're a power user who games heavily, streams constantly, and keeps your phone in hand all day, you'll still get through a full day without sweating it.

The numbers back this up. In testing, the OnePlus 15 hit about 10 hours and 44 minutes of screen-on time. That breaks down to over 30 hours of web browsing, 12+ hours of video streaming, or 14+ hours of 3D gaming. Those are industry-leading figures.

For context, this battery is 22% bigger than last year's OnePlus 13, and nearly 50% larger than the Samsung Galaxy S25 Ultra and Google Pixel 10 Pro XL. That's not a small difference. It's a generational leap in battery technology.

The clever part? OnePlus used silicon-carbon battery tech to pack all this capacity into a phone that doesn't feel like a brick. It's actually remarkably thin considering what's inside.

If you've ever had that moment of panic when your phone hits 20% at 3 PM, the OnePlus 15 makes that a thing of the past. You can actually leave your charger at home and not think twice about it.

Let's be real about the OnePlus 15 camera: it's good, but it's not the reason to buy this phone.

OnePlus made some interesting choices this year. They ended their partnership with Hasselblad and developed their own image processing called the "DetailMax Engine." They also made hardware changes that reviewers have called "a mixed bag."

The good news? For everyday photography, the OnePlus 15 delivers. Shooting your friends at brunch, capturing your dog being adorable, documenting your vacation. All of that looks great. Daytime photos are sharp with nice colors, and the camera app is quick and responsive.

The not-so-good news? When conditions get tricky, the OnePlus 15 doesn't keep pace with the best camera phones. Night photography results are inconsistent. The HDR processing sometimes flattens scenes in a way that looks unnatural. And if you loved the Hasselblad color science from previous OnePlus phones, you might miss it.

The hardware specs look solid on paper. The main sensor is actually bigger than before (1/1.4" vs 1/1.56"), and the telephoto now does 3.5x optical zoom. But reviewers have pointed out that some sensors are actually smaller this generation, and the apertures are narrower.

Here's the honest take: if you're a photography enthusiast who shoots in challenging conditions regularly, the iPhone 16 Pro or Galaxy S25 Ultra are better choices. But if you want a phone that takes great photos 90% of the time while also having incredible battery life and blazing performance, the OnePlus 15 camera won't let you down.

Think of it as a very capable B+ camera on an A+ phone overall.

The OnePlus 15 has an IP69 rating, which is actually better than what most flagship phones offer. That "69" instead of the usual "68" matters more than you might think.

Here's the difference: IP68 (what iPhones and Galaxy phones have) means dust-proof and can survive being underwater. IP69 means all of that plus it can handle high-pressure water jets. Think car wash levels of water pressure. You'll probably never need that, but it's nice knowing your phone can take it.

For normal life, this means you don't need to worry about rain, dropping your phone in a sink, or washing it off under the tap. It'll be fine.

The screen has Gorilla Glass Victus 2, which is Corning's latest and toughest glass. It's great at resisting scratches and cracks, but I'd still recommend a screen protector. Even the best glass can get scratched by sand, keys, or other sharp stuff in your pocket. You can get a 3-pack from Orzero for about $10. Worth it.

The phone itself feels solid and premium. Nothing creaky or cheap about it. You can get it in Absolute Black, a cool sand-colored option called Original Sand Dune, or a limited purple version (Ultra Violet) if you order from OnePlus or Amazon directly.

If you want extra protection, there are good case options. The Thinborne Aramid Fiber case is extremely thin but super strong. Ringke makes affordable clear cases if you want to show off the phone. Poetic Guardian has military-grade drop protection if you're rough on phones.

One thing worth mentioning: the phone does get pretty hot during long gaming sessions. No one's reported actual damage from this, but something to be aware of if you're concerned about long-term durability.

Overall though? This is one of the most durable flagship phones you can buy.