I have just acquired a Honor X6b and I cannot place or receive any calls. The signal goes from 4g to H as soon as I try to call. I can get and send messages so why is the call function not working?
It sounds like your phone may not be compatible with Smarty's VoLTE (4G calling), I'm afraid. It's trying to drop down to 3G to make calls, but most of Smarty's 3G has now been turned off.
