SIM with the same phone number on different devices
The primary device cannot be removed because it uses the primary SIM.
If the primary device or the primary SIM card/primary eSIM needs to be changed, the physical primary SIM card can simply be inserted into a new device. The new device will automatically be updated in the Cockpit. A primary eSIM can be transferred or replaced.
Important: Only the primary SIM can receive and send SMS messages. Therefore, it is recommended to use the primary SIM in your main device and use the additional SIM as a complement (for example, in tablets).
Cockpit
SIMs with different phone numbers on the same device
If you use two SIMs with different phone numbers in the same device, you can define in your device settings which SIM is used by default for calls, SMS messages, and mobile data.