Share your experience!
My xperia x8 stop making calls, when I make a call the phone ends it and say "call ended". But I receive calls normaly. I compared my x8 with another xperia neo, I found that Mobile Network State is disconnected I found this from Settings> About phone> Status. It should be connected as in xperia neo. the signal is good. I replaced the SIM card with another company SIM but no changes. I call the customer services they told me to call 123, their customer services number, if you can and I couldn't make the call then they said you have to go to technicians to install new software.
Worked for me
Z5 compact
Gracias