I am on a plan with my family, and want to upgrade one line (A) using another line's (B) upgrade. We have done this succussfuly many times in the past, but the most recent time we had a different experience. Line A used line B's upgrade to get an iphone 4s. After purchasing the phone online at att.com, we went into our local att store to get the phone activated for line A. In doing so, they said that line B (also an iphone) would need to replace their sim card. We did this and everything worked out fine - line A got the iphone 4s activated and line B insereted the new sim card in their phone.
Here's the problem - in the case of this potential upgrade swap, Line B is out of the country so getting a new sim card for the phone would really be a pain. Can we still do the upgrade of liine A without having to replace line B's sim card??
ACE - Expert
10 years ago
Correct. The reason you had to swap sim cards was because you ordered the phone online, meaning it came with a sim card already programmed for the line used for the upgrade, not the line actually getting the upgrade. If you go into a corporate store and upgrade, they will set up the sim for the line that is getting the upgrade even though the other line's upgrade is being used.
10 years ago
You probably could do this if you went into a store to upgrade your phones, rather than doing this online. Doing it online will require the same scenario that you described in your most recent experience.