help | 9 Connection mode | Linking the SIM card
9.1 Linking the SIM card
It is recommended that you link the SIM card to your device if this has not already been done after logging in.
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If the SIM card is not linked to your device, calls are signalled to you simultaneously in the Enreach Contact app and on your device.
 
You can specify whether you want to receive and make calls via the mobile network or via the Enreach Contact app.
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By default, calls are made and received via the Enreach Contact app.
 
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If the SIM card is not active in the device, the call will not be delivered.
 
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If you are using a tablet, you will not be able to select the connection type and link the SIM card on this device.
 
To link your SIM card 
1 Tap .
2 Tap on SIM card linked to.
*A wizard will open to help you link the SIM cards.
3 Tap Next.
4 Select one of the following connection modes:
*App preferred
*App only
*GSM preferred
*GSM only
*Calls are now received and made via the selected connection mode.
Further information on the different connection modes can be found at SIM card linking.
5 Tap Link in each case to link the SIM card to your device.
*The SIM card is linked to your device.
To unlink your SIM card 
1 Tap .
2 Tap on SIM card linked to.
3 Tap on Unlink.
4 Confirm the security prompt again by tapping Unlink to remove the link.
*The SIM card is no longer linked to your device.