I tested the Samsung Galaxy S24 Ultra to see how long it lasts on a charge. However, I wanted to see how well it stacks up against the iPhone 15 Pro Max in terms of power efficiency.

There's one tiny problem, though.

PCMark, the industry standard for battery life testing, only has a benchmark for Android phones — not iOS devices. As such, Mashable created its own custom test that can run on both the Galaxy S24 Ultra and the iPhone 15 Pro Max.