I've updated my iphone 5 to iOS 8.4.1 from 8.2 and got the following issues;
Please help me, I'm disappointed with apple for the first time in my life😕😠
iPhone 5, iOS 8.4.1
There are a few things to try.
First, reset the phone by holding the sleep and home button for about 10sec, until the Apple logo comes back again. You will not lose any data by resetting, but it can cure some glitches.
If this does not work, and to make sure that this is not software related, set it back to factory settings, without using any backup data afterwards. Set up the rest of the personal settings manually and test the phone.
If the phone works as before the update, restore from the latest backup. If the problem comes back, the backup data contained corrupt data, causing your issues.
If it still does not work, this is a hardware issue and the phone has to be serviced by Apple or an Authorized Apple Service Provider:
Use iTunes to restore your iOS device to factory settings - Apple Support
iOS 8.4.1
