I currently have Verizon as my carrier. I have great service, but do find that the Disney Mobile App eats up my battery life quickly. To try an extend the battery life, I put the phone in Battery Save mode and close all Apps that I am not using and always bring an external charger.
My company recently informed me that they are switching my carrier to AT&T...so I am hopeful that since the cell towers in the area are AT&T, my battery won't drain as quickly.