Please Help!!!

[KameronBriggs]

Okay so!
I have a few old AT&T SIM Cards hanging around, and I am trying to get my old 2G iPhone to work again. None of these sim cards have ever been in this iPhone, and I plugged one in, and it told me to select a rate plan and stuff. Like it was activating it again. But the phone numbers that were on these SIM cards are on different SIM cards now. What will happen if I activate? HELLPPP

 

[greemie]

If you activate it, you will add another line to your account. You would need a sim out of a working 2G AT&T iPhone, or hactivate.

 

[KameronBriggs]

If you activate it, you will add another line to your account. You would need a sim out of a working 2G AT&T iPhone, or hactivate.

How do you hactivate?