The Samsung Galaxy S24 Ultra may have the same 5,000 mAh battery as the Galaxy S23 Ultra, but it lasts a lot longer on a charge. In fact, its endurance blows away the iPhone 15 Pro Max, which is already one of the longest lasting phones around.
At Tom's Guide we test every smart phone using our own battery test, which surfs the web over a 5G connection at 150 nits of screen brightness. The handsets that make our best phone battery life list generally last 12 hours or longer on a charge. But the Samsung S24 Ultra sets the standard for flagships (at least beyond gaming phones).
