Using two-factor authentication helps prevent others from accessing your > [your name] > Sign-In & Security.
Tap Turn On Two-Factor Authentication, then tap Continue.
Enter a trusted phone number (the number you’ll use to receive verification codes), then tap Next.
A verification code is sent to your trusted phone number.
Enter the verification code on your iPad.
Two-factor authentication is turned on for your Apple Account, and your iPad is now a trusted device.
After you turn on two-factor authentication on your iPad, you can add other trusted devices to your Apple Account.
On the device you want to add, next to the phone number.
Trusted phone numbers don’t automatically receive verification codes. If you can’t access any trusted devices when setting up a new device for two-factor authentication, tap “Didn’t get a verification code?” on the new device, then choose one of your trusted phone numbers to receive the verification code.
Go to Settings Sign in to apps with your AppleID using app-specific passwords.