I have an iPhone 4 that I need to upgrade to the 5s with the same phone number. Is this as simple as backing up the 4 with iTunes then restoring the 5s with that backup?
And that will also transfer the phone number?
The phone number is programmed into the SIM card, not the phone. The 5s will come with a new SIM card already programmed with your number, as long as you get it from AT&T or Apple.
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