Battery Life Test of iOS 16.4 Official Release Across Multiple iPhone Models
A comprehensive battery endurance test using Geekbench 4 on six iPhone models (iPhone 8, SE2, XR, 11, 12, 13) shows that iOS 16.4 dramatically reduces runtime for all devices, with iPhone 12 and 13 losing about an hour compared to earlier iOS versions.
Source: Authorized repost from iOS 16 official version (ID: cuu543). Author: 阿九.
Video blogger iAppleBytes performed a battery endurance test on the iOS 16.4 official release using six iPhone models (iPhone 8, SE2, XR, 11, 12, 13) covering chips from A11 to A15.
All devices were fully charged and set to identical system settings: screen brightness fixed at 25 %, auto‑brightness disabled, same apps installed, background apps cleared and device rebooted, volume set uniformly.
The test used Geekbench 4’s “Battery Benchmark” to run a high‑intensity workload until the battery drained completely, recording the time to shutdown.
Uniform settings were applied before testing, as shown in the following screenshot:
The testing method involved running Geekbench 4’s battery benchmark until the device powered off, then recording the elapsed time.
Results (shown in the table image) indicate that iOS 16.4 dramatically reduces battery life for all tested models, with iPhone 12 and iPhone 13 losing about one hour of runtime compared with iOS 16.3 / 16.3.1.
An additional comparison of the eight official iOS 16 releases is provided, allowing readers to see which version offers the best endurance for each device.
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