How does dual SIM support work?
The first time a user with 2 SIM cards makes a call they will be prompted with the choice of SIMs to use for that call –
• To make that SIM the default for that specific contact
• To make that SIM the default choice for all calls
OR
• To be shown the prompt for every call – Go to More > Settings > Dual sim
The default choice can be changed in the settings by going to More -> Settings -> Dual SIM .
The default SIM choice for all calls or per contact can be overwritten for specific calls by clicking the arrow by a contact number and selecting the desired sim.