Chosen Solution

Sometimes, network in my device working as usual. And then, it suddenly change it into “Emergency call only”. After that, it has a network back. And then, disappear. It repeatedly every second.

The Sony phone will show “Emergency call only” when the signal is bad. May be you are in the bad reception area. If not, check if the SIM has problem or the SIM card reader is loose.

The problem is of SIM Card slot I am also having the same problem. But don’t know how to repair it. Any ideas?