Share your experience!
This happens regularly. It is not a problem with the handset I think it is an issue with the data service provider. With my airtel sim on 3 G almost once a day i find that data services just stop and after switching data on off and changing from only gsm to wcdma preferred then it starts. Surely i feel a service provider issue as it seems to happen after a lengthy period of idleness only.
Not sure this is a Dataprovide issue. On my home network where my Xperia-M exhibits this problem. My other phone Nokia E63 works just fine with full data connectivity, which never goes down. So to me it is a phone model issue.
you may be right. only sony can tell ....but will they..
sir,my mc afee antivirus has expired and i do not want to renew it.i am not able to uninstall it.and also .will any other free antivirus is availabe?please suggest.
you should never use that mcafee unless u want to buy it after a month.. Go to settings-apps-scroll to mcafee. then click it and uninstall. If it does not happen then try switching phone to safe mode n uninstalling.
Is there any solution find out for this issue? I am also facing the same issue 
If you ever had issue with mobile data connection, you need to set APN -> this info you can get only from your provider!!!
like this video https://www.youtube.com/watch?v=onfx4aKfb3M from my provider shows what you need to fill in APN settings

Same problem here with my Xperia M. As in the case of illutionist, switching to airplane mode and back resolves the problem temporary. Would be glad if this could be fixed in a future update.