Re: "Apple ID Verification Failed : I tried the "erase all content and settings" to clear the cache and other memory. It did the job, ... I keep getting the "Apple ID Verification failed" error whenever I try to login on my Iphone."
Wondering why verification fails ... eg: perhaps you were not getting a verification code to enter ?
or
As you changed the Apple Account password on your PC, you may be still signed in to your Apple Account with the old password in use (including for FaceTime, Messages etc).on the iPhone: You may need to sign out of FaceTime and Messages if they are signed in using the old password, and sign back in with the new password.
You could check you are signed in to your Apple Account (on the iPhone) with the correct Apple Account details:
Eg: Sign in to your Apple Account on the web or in your device settings - Apple Support
says:
Open the Settings app. Tap Apple Account at the top.
You could try logging in to your Apple Account online : https://account.apple.com/
There you can check (or edit) all the details to ensure they are up-to-date.
If you have difficulty getting a verification code:
You may be able to get a verification code from iPhone settings, if not by text, or email.
Get a verification code and sign in with two-factor authentication - Apple Support
or
If you didn’t receive your verification or reset email - Apple Support
More info: Two-factor authentication for Apple Account - Apple Support
Else: It may help to restart your iPhone (deletes temporary files, re-establishes connections, may update the recent Account password change wherever it is used, and more, often restores order if something is not working as expected.)
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If all else fails: Apple have an Apple Account support website online: Apple Account - Official Apple Support
(Eg: info. / support / contact options etc.)
