sony m2 phone
will only make emergency calls ?
Turn your phone off and on if still continues take your sim out give it a clean with a cloth then try again if still an issue then get the sim put it in another handset if no problem and can get a signal on that this means your M2 needs fixing
Welcome to the community and thanks for posting. I'm really sorry to hear you're only able to make emergency calls.
What's the latest with this?
Have you tried dazm33's suggestions?
Have they worked?
Please let me know if there is anything else I can help with.