On days with little use, I have 70 percent left by bedtime. As I spent more time on my phone, using it to stream music, navigate, and watch Instagram videos, I would often run out around 60 or 50 percent. I left it on the nightstand without even bothering to plug it in—a refreshing change of pace. I logged an amazing 10 and a half hours of screen time over two days.
This may be the best battery life of any flagship smartphone in the US today, especially considering the incredibly fast recharge time. OnePlus remains one of the few companies to include charger in box– mainly because it's the only way to take advantage of SuperVooc fast charging technology. I was able to go from 15 percent to 80 percent in 30 minutes (50 percent in 15 minutes). It's hard to worry about a dead phone if you don't mind keeping a bulky charger with you (isn't it too much to ask for a folding prong?).
But there is always a compromise somewhere. If you are a fan wireless charging and are especially interested in Qi2 smartphones What use magnets (like Apple MagSafe) for more convenient and faster charging, you will be disappointed here. The OnePlus 15 supports wireless charging, but only standard Qi technology. OnePlus sells magnetic cases as a cure, but unlike the current generation of top-end Samsung phones, that doesn't even make them into Qi2 Ready phone. It will only charge at slow Qi wireless charging speeds. (You Maybe buy OnePlus' branded wireless charger for fast charging, but that's a separate purchase and it's a wireless charger only quickly recharge selected OnePlus devices.)
The powerful battery and super-fast wired charging may overshadow the lackluster wireless charging, but now it's time to talk about the OnePlus 15's second most impressive achievement: performance.
Power play
Photograph: Julian Chokkattu
It's the first smartphone in the US to feature the Qualcomm Snapdragon 8 Elite Gen 5 processor, which we'll see in most high-end Android phones in 2026. The test results are excellent. In the Geekbench 6 test, OnePlus 15 officially became the first phone to surpass 10,000 points in multi-core CPU performance, even surpassing iPhone 17 pro max. However, the iPhone is still slightly ahead in single-core performance (it's more efficient overall).
