My iPhone 4 is on it's last leg. I've since changed out the battery twice. Replaced the home button, and now the solder on the battery housing is going and I have to mod my phone with a piece of card board + tape to get the power to work inside the phone. I'm ready for the iphone 5 but I'm currently using Straight Talk as my provider. I'm ready to trim the sim down but I need to find a store that offers an unlocked GSM iPhone 5. Should I just go out and purchase an iPhone 5 that's GSM unlocked via Verizon or wait for Apple to offer theirs unlocked.