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So sometimes when I'm using my iPhone 8 Plus, there is a huuuuuge lag between the press on the volume or power key, and reaction to this press. For volume key it's 1-3 seconds, for power key it is sometimes up to 10 seconds. And sometimes the phone just ignores it completely.

It's also nearly impossible to take a screenshot too, as home button works perfectly while power button has random delays many seconds long.

The issue appeared (or at least became MUCH worse) with iOS 14.2 update. Erasing everything did not help.

What may cause the issue and how to fix it?

EDIT: Basically, https://www.reddit.com/r/ios/comments/e4wrbl/laggy_volume_buttons_on_ios_1323/ is exactly my issue.

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  • Just as a note: I have an iPhone 8 and performance is quite bad for me too sometimes. What usually helps in my case is clearing out all apps.
    – X_841
    Dec 14, 2020 at 9:02
  • @X_841 but it's not a performance issue, performance is just great for me... It's an issue specifically with super delayed reactions to these 2 buttons and to them only
    – Andy Mac
    Dec 14, 2020 at 9:49
  • Also, factory reset did not help the case, not even a slightest bit.
    – Andy Mac
    Dec 14, 2020 at 9:50

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iOS 14.3 update solved the issue for me. It's still a mystery, but at least it doesn't bother me anymore.

UPD: The issue re-appeared a week later alongside with antennae losing signal (both in 3G only and 4G/3G mode). Turns out, this was a faulty hardware.

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    I was going to say, restoring the device is good if erase all content and settings doesn’t clear whatever preference or background resource hog might be intermittent. Glad the normal update process helped you...
    – bmike
    Dec 17, 2020 at 15:25

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