Create a DD account and register your $5 gift card there. Then when you switch phones, you can just add it back. All you need it the card number and the pin. That's what I did. (Since I already had a DD card, I just combined them making my physical card the main one, so it added the $5 to it.) As far as the $20, spend it. Heck, mine was gone in a couple days. LoL