did you guys found the solution for this ? 
I am also having ac2746 unlocked 
however I am unable to use any dashboard with it except china net 
If I am using any zte dashboard then I am getting an error 
The device has no response.Please reinsert and try again 
I am able to use china net at 1x speed only 
it shows evdo signals but its unable to connect 
basically I want to receive sms on this modem 
any help will be greately appreciated