After upgrading to iOS 15.4, the speed of many iPhones dropped according to the benchmark test?

Every time after upgrading iOS, what people are most worried about is the speed drop, especially some older models. In order to avoid upgrading iOS 15.4, many people will wait and see first.

Comparison between old and new iPhones after upgrading to iOS 15.4

Detailed test from YouTuber iAppleBytes, he compared The speed of iPhone SE, iPhone 6s, iPhone 7, iPhone 8, iPhone XR, iPhone 11, iPhone 12 and iPhone 13 after upgrading to iOS 15.4 and using iOS 15.3.1 respectively.

Compare the startup speed of Apps to see the change in fluency. Finally, there is a comparison of Geekbench scores.

Old iPhone or a little Lag

In newer iPhone models, there is not much difference in the speed of launching Apps after upgrading to iOS 15.4. In some older models, there is not much difference in most cases when starting Apps, but some Apps may have some lag conditions.

Geekbench running scores fell

In terms of running scores, whether it is a new iPhone or an old iPhone (except iPhone SE), there was a slight decline across the board.

#With the support of Face ID, there is really no reason for iPhone 12 and iPhone 13 users not to upgrade. , judging from the running scores, upgrading to iOS 15.4 did not bring much slowdown problems to these two iPhone models, and the iPhone 13 is even faster than before.

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