To stop your iPhone from constantly asking you to sign into iTunes, you can follow these steps:
1. Open the Settings app on your iPhone. You can find the Settings app on your home screen, which looks like a gear icon.
2. Scroll down and tap on “Face ID & Passcode” or “Touch ID & Passcode,” depending on the model of your iPhone. You may need to enter your device passcode to access this section.
3. Once you are in the Face ID/Touch ID & Passcode settings, look for the section titled “Use Face ID/Touch ID For.”
4. Within this section, you will see various options for using Face ID or Touch ID. Locate the option that says “iTunes & App Store” and toggle it off.
5. After turning off the “iTunes & App Store” option, you can exit the Settings app.
Now, restart your iPhone to ensure the changes take effect. To restart your iPhone, you can press and hold the power button until the “slide to power off” slider appears. Then, slide the slider to power off your iPhone. Once your iPhone is completely turned off, press and hold the power button again until the Apple logo appears, indicating that your iPhone is restarting.
After your iPhone restarts, you should no longer receive the popup asking you to sign into iTunes. This setting change prevents your iPhone from automatically prompting you to use Face ID or Touch ID for iTunes and App Store purchases.
It’s worth noting that if you ever want to use Face ID or Touch ID for iTunes and App Store purchases again in the future, you can simply go back to the Face ID/Touch ID & Passcode settings and toggle the “iTunes & App Store” option back on.
I hope this helps resolve the issue you were facing with your iPhone constantly asking you to sign into iTunes. If you have any further questions or need additional assistance, feel free to ask.