Changing Apple ID
If I change my Apple ID will I lose my apps and music?
iPhone 8 Plus
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If I change my Apple ID will I lose my apps and music?
iPhone 8 Plus
Not if you change the email that you use for your Apple ID as described in Change your Apple ID - Apple Support
Not if you change the email that you use for your Apple ID as described in Change your Apple ID - Apple Support
If you create a new AppleID yes, all the data with your other AppleID cannot be transferred to a new one.
If you do as FoxFifth suggests and simple edit the primary email address used with your current AppleID then nothing is lost or changed.
Changing Apple ID