- SIM 1 is CHT SIM, SIM 2 is TWM SIM -> works
- SIM 1 is empty, SIM 2 is TWM SIM -> works
- SIM 1 is TWM SIM, SIM 2 is empty -> works
- SIM 1 is empty, SIM 2 is empty -> works
- SIM 1 is CHT SIM, SIM 2 is TWM SIM -> works
- SIM 1 is empty, SIM 2 is TWM SIM -> works
- SIM 1 is TWM SIM, SIM 2 is empty -> works
- SIM 1 is empty, SIM 2 is empty -> works
- SIM 1 is CHT SIM, SIM 2 is TWM SIM -> UI hangs and doesn't work
- SIM 1 is empty, SIM 2 is TWM SIM -> works
- SIM 1 is TWM SIM, SIM 2 is empty -> works
- SIM 1 is empty, SIM 2 is empty -> works
- SIM 1 is CHT SIM, SIM 2 is TWM SIM -> UI hangs and doesn't work
- SIM 1 is empty, SIM 2 is TWM SIM -> works
- SIM 1 is TWM SIM, SIM 2 is empty -> works
- SIM 1 is empty, SIM 2 is empty -> works