iPhone so slow and laggy after the update of IOS 14.5.1

I noticed my iphone so slow and laggy since updated to IOS 14.5.1 according to their recommend.



  1. all apps are slow and laggy
  2. Internet is so slow (now 6.23 Mbps download vs before over 200 Mbps.


does anyone have the same problem?



iPhone 7, iOS 14

Posted on May 4, 2021 6:18 AM

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Posted on May 13, 2021 11:49 AM

To any ll who have posted recently - how much time has passed since you updated to 14.5.1 ??  As Dogcow-Moof posted - most problems resolved themselves after 24 hours +.  I initially had really slow (slaggy) system when I updated to ios 14.5.1 but after 24 hours it improved and now it works fine (iphone (7) and ipad (2020). 

102 replies

May 13, 2021 10:48 AM in response to ruffyoung

iPhone Xr. Worked perfectly UNTIL updated to 14.5.1. Now so slow it can easily take 1-2 hours for app store download. And Ring will not play videos. Also, songs skip during playing. Have 81 GB free space. Only time I restart my phone is when it does a self-restart overnight. Happens when battery is at 100%. Tried allowing battery to go dead --no improvement. Suggestions?


May 17, 2021 1:18 PM in response to jadelynn15

I think I have tried everything everyone has suggested: Latest --Turned off. Left off several hours. Plugged into charger. iPhone auto started. Used iPhone while still on charger --problem persists. Also tried: Connected to MacBook Pro. Did auto-sync. Did manual sync. Changed music playlist. Again synced. Used iPhone while still connected to MacBook Pro --problem persists. Did proper disconnect from MacBook Pro --problem persists. One other thing --the last sync caused my playlist on the phone to disappear --possibly a result of the very slow data transfer rate? Any other ideas? Or --is it time to call Genius Bar for help? (Note: I have posted several times in this chat which taken together provide a complete history of everything I have tired --all without success.

May 20, 2021 4:31 AM in response to ruffyoung

My iPhone 11 Pro Max has become laggy, apps take longer to open, and often have to be restarted because they do not respond when first opened. On the previous versions I did not notice anything like this. I have forced-restart the device daily without any improvement. I always close my apps as soon as I am finsihed with them, and the content on the device is the same as before the update.

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iPhone so slow and laggy after the update of IOS 14.5.1

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