o2 Multicard: All USSD codes for the second SIM

You can adapt your o2 Multicard extensively using various USSD codes. For example, you can determine which SIM card you want to use to receive your calls or SMS messages and activate the LBS localization of the mobile phone.

Multicard at o2: All codes at a glance

There are a total of 13 USSD codes for the Multicard at o2. You enter these commands via the keyboard of the telephone app and activate them via the call button. It is important that you enter the following codes directly on the device in which the multicard is inserted.

1. * 120 #: Get a list of all available codes
2. * 121 #: Call up an overview of all active SIM cards
3. * 122 #: Request the SIM card that receives calls first
4. * 123 #: Activate or deactivate incoming calls on this device
5. * 123 * 0 #: route all calls to this cell phone
6. * 124 * Priority #: Change the call forwarding priority of the current SIM card
7. * 125 #: route SMS receipt to current SIM card
8. * 125 * 0 #: Limit SMS reception to the SIM card that receives calls first
9. * 126 #: route MMS reception to current SIM card
10. * 126 * 0 #: Limit MMS reception to the SIM card that receives calls first
11. * 127 #: Activate or deactivate LBS localization of the current device
12. * 127 * 0 #: Limit LBS localization to the SIM card that receives calls first
13. * 128 #: Restore default settings

In addition to the USSD codes for multi-SIMs mentioned, there are numerous other commands for every tariff provider. The best and most exciting USSD codes can be found in our picture gallery.