"Unable to connect" Problem
 

hello please help me.I ordered some phones dual sim tv wifi iphone 5 like clone.It says on it sk-5 model. insert the sim put the pin,it finds network and it has signal but when i try to make a call it says unable to connect.Also,i cannot receive messages or send.Please every help would be great because supplier didnt respond to my messages and i have lost my money if i cannot repair them..