I have been on all networks at one time or another but 6mths ago changed to EE for the 4g and voice calls have rapidly gone downhill. I now get dropped calls, long periods of silence then call comes back, the person at the other end of the call cant understand what I am talking about due to garbled call. I have checked with relatives about a mile away and they are experiencing the same. 4g doesn’t work at my house but does work half a mile away in open fields and no population. I think all the networks are taking the mick as talking to friends on Voda and O2 they have experience similar problems and all of us are being told “there are no reported problems in your area”.