I posted this in another thread. I just did it.
Scenerio: One person on your family plan is eligible for an early upgrade but you aren't. You have an iPhone 3G or something and that other person has another phone (in my case, a blackberry). Let's call the person on the plan that is eligible for the upgrade SP (subsidized pricing).
1. Get SP to agree to 2 more years of AT&T(toughest part?)
2. Go to the Apple Store with: Last four digits of social, the phone number eligible, and the billing zipcode.
3. If eligible, you will get an iPhone 3GS! But, the sim inside is for the number eligible. Oh and SP's phone will no longer work. =(
4. Hurry home to the SP and you take out the sim card in the iPhone 3GS (before plugging into iTunes) and put it back into SP's phone (the blackberry in my case).
5. Put your sim from your iPhone into the new iPhone 3GS!
6. You may start syncing and activating the iPhone 3GS. Meanwhile, we need to fix SP's blackbeerry (or other phone) again for normal service.
7. Call AT&T (611) and explain what you did. This is perfectly allowed and isn't illegal. They will need the IMEI of the phone (or will have it in their system). In 2 minutes, their phone should be good as new. You will need to reboot SP's phone.
8. NOTE: If the SP had a blackberry data plan this IS NOT the same as an iPhone plan, and the connection will refuse. So, you must call AT&T to change this.
9. Done! And now you have a new phone and your cool family member just sat there and took the two years! Hug that person for good measure!
I had to do this. But it was painless! Hooray good customer service!
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