NM4587 What the sim will gather:
- Location via triangulation
- IMEI
- IMSI
This is unavoidable. If you want to detach your sim at any time during the usage of the phone, turn on Airplane Mode.
This will only conceal your location however, because your IMEI and IMSI have been collected already.
You have nothing to lose by having it in your phone if you're carrying the sim already, and dont mind them knowing your device type via the IMEI.