Zayed Rehman·

iOS 18.4 Battery Life Drain Test: How Well Does It Hold Up?

Here’s iOS 18.4 battery life drain test that you as an iPhone user might want to check out.

Apple’s iOS 18.4 update is almost here, and as always, battery life is a big concern for users. To see how well it performs, iAppleBytes ran tests on multiple iPhones, including the iPhone 16, 15, 13, 11, XR, and SE.

Each iPhone had a fresh install of iOS 18.4 and was given 24 hours to settle before testing. To ensure fair results, screen brightness was set at 25%, and all devices were connected to the same Wi-Fi network.

The Geekbench Battery Test was used in two modes:

  • Full Discharge Mode: Drains the battery from 100% to 0%, giving the most accurate results.
  • Partial Discharge Mode: Measures battery efficiency over a few hours, providing moderate reliability.

Higher scores indicate better performance and power efficiency. While full discharge results are the most trustworthy, partial tests still give a good snapshot of battery performance.

So, does iOS 18.4 improve or hurt battery life? These test results provide a clear look at how well the update manages power. If you’re wondering whether to update, this might help you decide whether to install it right away or wait.

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