upcoming OnePlus device, rumored to have a massive 7800mAh battery (per Wccftech).
and it would absolutely smoke the 5,000 and 4,685mAH batteries in the Galaxy S25 Ultra and iPhone 16 Pro Max.

Instead, Apple and Samsung seem to be prioritizing thinness at all costs, for reasons that aren’t entirely clear beyond aesthetics and bragging rights. It’s been years since I’ve heard anyone complain about how thick a phone is, if not a decade or more. Complaints have trended in the opposite direction, I’d say – without a case, some phones can be so thin and slippery that they’re hard to grip securely. Even my wife’s OnePlus 9 5G has that issue. A few foldables, like Google’s Pixel 9 Pro Fold , are so thin when open that they feel like they might bend or snap.