Are Phone Sim Cards Interchangeable. Damage to the SIM tray or the device caused by a modified SIM card isnt covered by Apples hardware warranty. You can also use different phone service plans in a single unlocked phone say one for work and one for personal by switching the SIMs.

Regular SIM - Micro SIM - Nano SIM. With unlocked phones you can always switch your phone service between different phones as easily as popping out the SIM card and moving it. Use this on your unlocked compatible device to access the T-Mobile network.
Usually you dont have to worry much about what size SIM fits in your phone since most carriers will send you a triple cut SIM which includes all 3 SIM sizes.
That will work for you or else you can buy dual SIM cell phone to avoid interchanging of the SIM. In addition the SIM card has enough memory to store a limited amount of phone. Enjoy all the benefits of our unlimited plans. This subscriber identity module SIM is read by the device and contains data unique to the registered user such as their identification number and data.
