Can you use sim from old tracfone Motorola c139 into a new tracfone of same exact phone?

Yes, you can use the SIM card from an old Tracfone Motorola C139 in a new Tracfone of the same model, provided that both devices are compatible with the same network technology. Simply insert the old SIM card into the new phone, and it should work as long as the SIM card is active and not locked. However, if you encounter any issues, you may need to contact Tracfone customer support for assistance with activation.