Sometimes it is not worth selling an old iPhone for a measly $100 when you can use it as a backup for emergencies in case your current iPhone dies or is being repaired or being replaced.
I am considering getting an older iPhone as a backup for emergencies but not sure if I should go as far back as a 6S or go with the 7.
I am considering getting an older iPhone as a backup for emergencies but not sure if I should go as far back as a 6S or go with the 7.