Problem on call forwarding with my Lenovo X2-AP

[AC Question]

Sim 1 call forwarding was enabled but Sim 2 can not. "unexpected response from network" always appear.

 

[B. Diddy]

Welcome to Android Central! What happens if you temporarily swap the card in the 2nd slot into the 1st slot. Does it still give you that error? If so, contact the carrier for that card. Maybe you need to replace it.