Refill balance and expiration
I have an AT&T prepaid phone with a small balance good until 12/24 of this year. I am currently trying out another phone/plan to see if it will be better (it has unlimited talk). I still want to keep my prepaid phone active just in case I want to go back to it. If I refill a small amount on my prepaid, will it change the balance expiration date? Example: if I put, say, 25 dollars on it, will the expiration change from 12/24 to a closer date?