Network problems with Samsung Galaxy Young (S6312) I'm having a network problem with my Samsung Galaxy Young (S6312) device. Sometimes while trying to make a call, even though the signal indicator shows 2 or 3 bars, the device displays a message like "Not registered on network" and the call doesn't get through.

Also, sometimes while my mobile data is turned on it doesn't connect to the internet. I have set the mobile network to the GSM/WCDMA(AUTO) mode.

Is there any solution for this?
I have had a similar problem to this. In my case, it was caused by the SIM card coming loose. Try the following steps:-


Turn the phone off completely
Remove the SIM card
Reinsert the SIM card
Turn the phone on again


and then see if you can make a call and use mobile Internet. If it happens repeatedly, you might need to wedge a small piece of paper in with your SIM card to keep it in place.