Chosen Solution
I can send and receive text, access the internet via 4G. phone calls do not come in or go out.
@felippe ,Felippe Silva , Check with your service provider to see if there is a glitch at their end. There is also a link below telling how you may be able to fix in your settings of phone. Good luck. I hope this helped you out, if so let me know by pressing the helpful button. http://deviceguides.vodafone.ie/web/sony…
as far as i know its a comon problem with the m4 aqua, for some reason all anteannas are problematic (this includes wifi and bluetooth). A workable solution is to put preassure on the NFC logo on the back (this also fixes bootloops that a probably caused by the anteannas too). I have a case for my M4 where i put a piece of rubber right at the NFC logo, so it gets constatnly pressed and that seems to work and fixes most of the problems