Many Peoples Using One Apple ID to Manage all Aple Cadets So here way to change Apple ID in The iTune Store using iPhone & iPad
Sign in with a different Apple ID
- Tap Settings > iTunes & App Stores.
- Tap your Apple ID.
If you see the option to Sign In, you can change your Apple ID now.
- Tap Sign Out.
- Enter your Apple ID and Password and tap Sign In.
Or if you don’t have another Apple ID, tap Create New Apple ID.