Set your Apple ID login problemsIn case you aren’t able to sign in for a cause which includes iTunes and App Store or iCloud, there are numerous steps that can help. So this post is a step by step guide to debug and fixing it.
Verify Your Apple ID and Password
Check if you enter the right Apple ID and password then head for a technical fix. These credentials are fairly easy to type incorrectly or forget, so make sure you didn’t miss anything!
Sign Out of the App Store
Signing out of the App Store might resolve any session issues now and then. To do this:
Open Settings.
Tap on your name at the top.
Swipe down and tap Sign Out.
Then sign out and try to login with your Apple ID.
3. Check Date & Time Settings
Time and date settings affect secure logins Make sure the date and time is set to automatically.
Settings >
General > Date & Time.
Enable Set Automatically.
Reset Network Settings
Apple services might be unavailable due to network problems.AppleID (ad) Reset the Network Settings to Fix Connectivity Issues
Settings > General > Reset >>>>Reset Network Settings.
It will delete saved Wi-Fi networks and passwords so you might have to reconnect.
Restart Your Device
Usually, this will be enough reset to fix all the little temporary glitches that are making your ZTE performance worse. Press the power button and keep it pressed until you get an option to Shut Down he phone, hold on for another few seconds then turn back ON
Sign Back into the App Store
Now sign out from the App Store and Sign in again once your device is restarted.
Open the App Store.
Click on your profile icon, sign in with the Apple ID.
Other Things to Try
If this fails to solve the issue, you can try these steps.
For a list of current network status and availability, check out Apple’s System Status page.
You can just go to Settings > General and Software Update.
If you turned on two-factor verification, make sure to have the code sent to your trusted device.
By following above steps, you should be able to troubleshoot and fix login issues related to Apple ID..