Patent product in China and Taiwan.
Re 2-sim-in-1:
1. Carry 2 different numbers in 1 card.
2. Just one minute,2-sim-in 1 upgrades your mobile
Phone to dual SIM card freely and easily.
3. No need to take out and change another SIM card
Anymore.
4. Choose the number anytime you want.
5. Avoid SIM card losing or damaging.
6. Save expenses from roaming or long-distance
Calls.