I have just upgraded to a newer phone after being on sim only for a few years. I have stayed with EE and I've kept the same number. They sent me a sim card along with the phone. I'm currently just using my old sim card. Should I be keeping my old sim card or do I need to put my new one in?
If your existing SIM fits in your new phone, and works ok, then feel free to use it.
EE often supply a replacement SIM with upgrade phones incase, for whatever reason, the customer has a problem with their existing one or it's the wrong size.
If neither of these apply to you, then you are free to file the replacement SIM appropriately and continue using your existing one.
