Share your experience!
My sony xperia has no signal appears only emergency calls
Mi sony xperia no tiene señal aparese solo llamadas de emergencia
I've edited your post as this is an English only forum, you can use Google Translate to reply and/or post.
Did the issue just started? if it did, could you test the SIM card with a different phone, also, if possible, test a different SIM card with your phone.