You can currently get 1000 Free Rollover minutes with AT&T when you text YES to 11113020!
For more info you can check here.
This is AT&T’s way of saying Thank You! They also confirmed you will not get charged for anything extra.
I did it and got a text back saying "thank you for accepting our free 1000 bonus rollover minute offer. Please allow up to 4 weeks for processing."
This was intended for iPhone users but seems to be working for everyone – right now anyway!