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Particularly noteworthy is the inclusion Apple A15 Bionic chips - the fastest mobile processor Apple has ever made and which Apple claims is 50% faster that any of its competitors. The Pro Max and Pro Max each have an upgraded 5-core GPU. This joins a 120Hz LCD screen, upgraded battery and improved camera sensor improvements to complete the specifications on a powerful mobile device.
One to three months after purchase, your AT&T billing credits will begin to appear on your AT&T mobile bill.
If you choose to skip the carrier authorization process at the time you purchase your iPhone, you will need to contact a provider to activate it or insert your SIM card to access cellular services.