Hello sirs I am stucked up after unlocking my zte z730 @ #2500 ydae from a guy, since I inserted sim and it opened I feel relaxed and the thing now is am unable to recieve calls with the phone, calls do enter but if I swipe to pick the call, the call time won't read and the call is still ringing and also I have issue with the network I can't use WCDMA I can only use EDGE, the phone is a t-mobile product and was sent from Canada. I am anticipating for quick response.... thanks so much bros