iPhone 7 lagging when unlocking

Wondering if any iPhone 7 users have experienced this issue whereby the phone will lag and become very sluggish when unlocking the phone. This issue arrived when I updated to iOS 14 and I didn’t have this problem in iOS 13. After unlocking , the animations will turn off and opening apps, scrolling through your apps will be really really laggy. After about 10 second when the unlock icon at the top of the screen disappears, then everything run as usual. Please respond if anyone have faced this issue before.

iPhone 7, iOS 14

Posted on Nov 5, 2020 5:24 PM

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Posted on Apr 9, 2021 8:45 AM

Just adding my voice to the thread, had this infuriating issue on iPhone 7 since iOS 14 launched.


As someone earlier in the thread pointed out, it does seem (at least in my case) to be related to pushing the button to wake up the phone. This appears to not wake up the CPU correctly leading to a period of intense lag.


Enabling "Wake on Raise" and then raising the phone to wake it, before unlocking the phone via Touch ID works perfectly. It's important to note that pushing the button to wake still causes lag. You must raise the phone to wake it.


An awful workaround, but since Apple doesn't seem to care about the issue, it will have to do.

378 replies

Nov 19, 2020 7:26 AM in response to Jeff_W.

Good evening! The same problem is observed on ios 14.2. When unlocking iphone 7 (32 Gb), the animation lags for 3 seconds, and then everything is ok. The bug is repeated 1 time out of 5. But when it is repeated it is very annoying. Free memory is more than half, battery status is 97%. A full factory reset and restore from a backup didn't help.


Dec 20, 2020 7:26 AM in response to IvanTan55

Hey, I’m using an iPhone 7 Plus, have 92% battery health and over 10gb of free storage, and even I’m facing the same issue after updating to iOS 14. Thought that Apple would fix it with 14.3, but was left disappointed. A temporary fix would be to go slow on the phone cus it seems like an issue when you’re trying to do things quickly. It’s certainly not cus the A10 can’t handle iOS 14, it’s some sort of performance bug.

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iPhone 7 lagging when unlocking

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