However, new testing by Tom's Guide suggests that Apple's numbers might be a bit of an exaggeration. The site ran both iPhone XS models through its usual Battery Test regimen, which includes web surfing at 150 nits brightness, disabling auto-brightness, and turning off True Tone. Additionally, all tests were performed on T-Mobile's LTE network with the aid of a T-Mobile 4G LTE CellSpot. The results were, well, interesting.
Last year's iPhone X managed to last 10 hours and 49 minutes during this test, which is quite respectable given its meager 2,716 mAh battery. However, this year's iPhone XS managed to last just 9 hours and 41 minutes during the same test. That puts the newer model over an hour short of its predecessor.
The iPhone XS has a slightly smaller 2,658 mAh battery, but Apple claims that efficiencies with its 7nm A12 Bionic processor allow it to eke out better battery life. Unfortunately, we're not seeing that play out in these tests.
As for the iPhone XS Max, this device has a much larger 3,174 mAh battery. However, even this wasn't enough to topple last year's iPhone X, with a runtime of "only" 10 hours and 38 minutes. What's even more telling with these figures is that none of the iPhone models could top some popular Android peers with regards to battery life. The newly launched Samsung Galaxy Note 9 managed to last 11:22, while the Huawei P20 Pro demolished all contenders by lasting 14:13.
Given that the Huawei P20 Pro ran away from the pack with ease, it's no wonder that the company was trolling Apple fans waiting in line on launch day for the iPhone XS/XS Max. Huawei employees in Singapore handed out 10,000 mAh power banks to waiting customers with the following note enclosed in the box: "Here's a power bank. You'll need it. Courtesy of Huawei."
In case you were wondering, Huawei's P20 Pro flagship comes equipped with a 4,000 mAh battery. Huawei is likely looking to push its battery lead even further with its next generation P30 Pro, which is supposed to debut on October 16th with a 7nm Kirin 980 processor.