Sony Xperia Z1 Compact - good signal but cannot make or receive calls. Texts not clever either!
Over the last few days, although I have got good signal, 95% of the time I cannot receive or make calls. Anyone calling me gets the message 'The mobile number you have called is currently unavailable', even when they are sitting right next to me. Texts messages are delayed or never sent or received.
Use this phone for work, it is costing me time and money!