if you pay off your phone contract can you keep the sim card
1 Copy the numbers you want to keep from your SIM to your phone, then after your number transfer copy them back to your new SIM. 2  See our phones and devices section for specific help on how to do this on lots of devices.3  Smartphone users can backup important information, like contacts, to the cloud.You have two options). 1  Copy the numbers you want to keep from your SIM to your phone, then after your number transfer copy them back to your new SIM. 2  See our phones and devices section for specific help on how to do this on lots of devices. 3  Smartphone users can backup important information, like contacts, to the cloud.