Upgrade to Android device and then switch back to iPhone
I am trying to use one of my line's upgrade elligibilty to purchase an HTC One at a discounted price, but I do not intend for that line to use that phone. Instead, I would like that line to retain service for an iPhone 4S. They use different data plans, though, and I have to select a new data plan when I purchase the HTC device. Will I be able to switch the plan back to an iPhone data plan free of charge, and if so, how?