If iPhone is coming up with “Apple ID verification” pop-ups, the problem could be due to a software glitch, an update waiting to be installed or problem with your payment information.
In a typical case of this nature, iPhone comes up with “Apple ID Verification” pop-up, which provides the option to tap on Not Now or go to Settings and enter the password for Apple ID.

However, the pop-up does not go away and keeps returning back, both when you tap on “Not Now” and also when you select “Settings” and enter the right Password for Apple ID.
Repeated “Apple ID Verification” Pop-ups on iPhone
You can find below the steps to fix the problem of an iPhone coming up repeated “Verification Required” pop-ups.
1. Shut Down and Restart iPhone
Restarting your device can help in terminating stuck processes which might be causing this problem.
1. Go to Settings > General > Shut Down.
2. Wait for iPhone to completely power-off > After 30 seconds restart your device.
3. If the pop-up returns, tap on Settings > Enter your Apple ID Password.
Keep your fingers crossed and hope “Apple ID Verification” pop-up does not come back to haunt you again.
2. Install Updates
As mentioned above, this problem could be due to an update waiting to be installed or iPhone not being updated for a long period of time.
1. Go to Settings > General > Software Update.
2. Wait for iPhone to search for updates > tap on Install Updates (if an update is available).
3. Sign Out And Sign-in to iCloud
The problem could be due to a glitch in Apple’s iCloud service.
1. Go to Settings > tap on your Apple ID Name > scroll down to bottom of the screen and tap on Sign Out.

2. Follow the instructions to Sign-out from iPhone.
3. Wait for 30 seconds and Sign in to your device.
Hopefully, this should fix the iCloud glitch causing repeated Apple ID Verification pop-ups on iPhone.
4. Check Your Payment Information
Make sure that the Credit Card or other form of payment information linked to your Apple ID correct.
1. Go to Settings > tap on your Apple ID Name.
2. On Apple ID screen, tap on Payment & Shipping > If prompted, enter your Apple ID Password.
3. On the next screen, tap on your Credit Card or the listed Payment Method and make sure it is up to date.
If your new Credit Card is not yet ready, you can remove the expired one using steps as provided in this guide: How to Remove Credit Card from Apple ID.
5. Login to Apple ID Page
If the problem is not yet fixed, login to your Apple Account on a MacBook or Windows computer and see it there is a need to Reset Apple ID Password or update/re-confirm answers to security questions.
1. Using a Mac or PC go to account.apple.com.
2. Enter your Apple ID and Password to login to your Apple Account.
Once, you are logged-in, you may see a message requesting you to update your Apple ID password or confirm your answers to Security questions.
3. Follow the prompts to Change/Update your Apple ID password or Reset Security Questions.
After you are done with this, you may still find iPhone coming up with “Apple ID verification” pop-ups, the first time you go back to your device and also while trying to use iMessage.
This happens, due to your Apple ID being linked to all iCloud related services. Once, your Apple ID is verified on two or more iCloud services, the problem should go away.
6. Reset All Settings
If above steps did not help, the problem could be due to corrupted settings, which can be fixed by resetting iPhone to its original factory default settings.
While this step results in removal of network, location, notifications and other customized settings, it does not delete photos or any other data from your device.
1. Go to Settings > General > Transfer or Reset iPhone > select the Reset option.
2. On the pop-up, select Reset All Settings option.
3. Enter your lock screen Password > On the confirmation pop-up, select Reset All Settings option
Wait for all the Settings on your device to be reset to its original settings.