Doug has a mobile device through Straight Talk. But his internet access is terrible with his iPhone 5. He was told by Straight Talk that the iPhone 5 is being phased out and he'll have to get a new phone. Leo says that Apple has stopped supporting the iPhone 5 and it's likely Straight Talk is doing the same thing. So you should be able to take the SIM out and put it in the new one. If it doesn't work, then you can just get a new SIM card from Straight Talk.