Is the iOS 13.3 battery life drain worse than on iOS 13.2.3?

Apple pushed out the iOS 13.3 update recently, and early reports and reviews are starting to come in. One perennial area of concern is battery life, so many users want to know how bad the iOS 13.3 battery life drain will be before they update.

How is the iOS 13.3 battery life drain?

The short answer is that it’s not too bad, but thankfully there is a video with more details about it. The video comes from iAppleBytes, and it looks at the iOS 13.3 battery life drain on the iPhone 11, 11 Pro, XR, 8, 7, 6s and SE. The test involves running different apps on each device simultaneously.

For the purpose of the test, the brightness on each of the phones was set to 25%, and auto-brightness was disabled. The tester then launched Geekbench 4 to conduct the test. The test is the first battery test on the iPhone 11 and 11 Pro, so there were not previous results to compare their battery life to.

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The first phone reached low battery status a little before 5 minutes into the video. Unsurprisingly, the iPhone SE was the first to see its battery sapped. Interestingly, the iPhone 8 was second about 30 seconds later, followed by the iPhone 7 and then the iPhone 6s. That left only the iPhone XR, iPhone 11 and iPhone 11 Pro with sufficient battery to keep going.

Test results

The iPhone SE powered off not long after reaching the low battery warning. A little after the six-minute mark, all four phones that were showing low battery had turned off. The iPhone SE lasted a mere 2 hours and 15 minutes, while the iPhone 6s lasted three hours and 22 minutes. The iPhone 8 lasted three hours and 43 minutes, and the iPhone 7 lasted a bit longer at three hours and 53 minutes.

The iPhone XR ended up lasting six hours and 17 minutes, while the iPhone 11 Pro lasted six hours and 23 minutes. The iPhone 11 was the winner in the iOS 13.3 battery life drain test at 7 hours and 4 minutes.

The iPhone SE’s and iPhone 6s’ battery life was virtually unchanged from iOS 13.2.3 to iOS 13.3. The iPhone 7 lasted about 40 minutes longer on iOS 13.3, while the iPhone 8 lasted about 30 minutes longer on the newer version. The iPhone XR’s runtime was about the same as on the previous version with a difference of less than 10 minutes.

The full video of the iOS 13.3 battery life drain is embedded here if you want to check it out yourself: