Straight Talk. Uses the AT&T network, $45/month, no contract. iPhone 4 must be unlocked, which you can get done through AT&T since your iPhone 4 contract expired.So i got my iPhone 5.
I want to give my iPhone 4 to my mom.
She currently uses a T-Mobile pay as you go Razr.
Can we get her a similar ATT PrePaid sim card and just stick it in the iPhone 4?
Whats the best way to do this.