Make sure to include the following in your question: (1) phone name, (2) phone model number, (3) phone where the phone is running, (4) if the phone is locked or unlocked Even to remove, the gap between the two carriers has become still vague . By assigning frequency bands, this is the best way to know if the phone or smartphone feature you purchase is compatible with the mobile network. How To Unlock My Iphone For Tmobile there. If you had a previously unlocked phone, a network operator like Verizon or Sprint is likely to prevent using this phone for their data, voice or messaging services. This was refreshing because apparently there were no such slippery and manual APN names (Access Point Names) in recent years. Although carrier 4G technology is consistent across the globe, it does not mean that a 4G LTE smartphone works on each network. Before trying to do something crazy, you should sell your old phone and then buy a new phone that works well with straight talk. If you are looking for a new gadget to make your life a little easier or a new device or using a smart device at home, you can rely on Best Buy weekly ads to offer incredible offers every time you visit us online. I think I seen another screen before, so I think I already registered it. (I know that the last bit may be confusing, can not figure out how to express it.) I learned the difficult ways after using a Straight Talk SIM card for 3 months and decided to go to Verizon unlimited plan too I can not use my iPhone 7 lock due to the carriers and the SIM card, even though it is not locked on Straight Talk locked Iphone 7.