https://wccftech.com/iphone-13-pro-max-vs-pixel-6-pro-vs-galaxy-s21-ultra-battery-drain-test/

The iPhone 13 Pro Max features a sizable battery upgrade compared to last year’s model, with the flagship now sporting a 4352mAh cell. Critics and reviewers have mentioned that this change makes Apple’s latest and greatest smartphone offering one of the best when it comes to ‘screen on’ time. However, how well does it fare against the Pixel 6 Pro and Galaxy S21 Ultra? Pretty good, actually, but why spoil the fun when we can share all the details with you?

The battery drain test was done by the YouTube channel PhoneBuff, which previously showed us that the iPhone 13 Pro Max barely beat the Pixel 6 Pro in an app speed test. Well, now let us see which flagship out of the three touts the highest endurance. A multitude of tests were carried out, each of them stressing the smartphone batteries extensively. If you check out the video below, it is the iPhone 13 Pro Max that ends up winning.