I just checked for my iPhone 14 Pro and the mail-in battery replacement is free. Maybe because I have Apple Care?
Yes. You're paying at least $9,99 per month which means that after the 5 or so years when the battery starts going bad you've already paid for multiple batteries.
Yes. You're paying at least $9,99 per month which means that after the 5 or so years when the battery starts going bad you've already paid for multiple batteries.