By default, USSD codes will be dialled automatically once you tap on them. This is the default and recommended setting. However, in case the dialing is not happening on the correct SIM, you can turn this setting off. Now, tapping on a USSD code will open the phone dialer and show the USSD code in it. You can now manually dial the USSD code and use the standard phone feature to select the correct SIM.
To change the USSD code dialing option:
- Tap on the Balance Check Widget. Click on Manage button. From top right corner, select Settings icon.
- Open iReff app. Open navigation menu from the left. Select USSD Codes. From top right corner, select Settings icon.