Xperia M Data Connection Problem

[Alankar]

I have a strange problem with Xperia M, When i Set the 'Network Mode' to WCDM only or WCDMA (preferred)/GSM and switch off the data connection the network connectivity is lost, In short the sim becomes inactive but the range indicator shows proper signal. I changed the handset to xperia U and it worked fine in this handset. I also restored the phone to factory setting but it did not helped , I also repaired the firmware but the problem is not solved. The same problem is with Xperia SP with IDEA network in maharashtra circle (INDIA).

[Friko]

You need to set APN settings, which you can get olny from your mobile provider

this video shows instruction from my provider: https://www.youtube.com/watch?v=onfx4aKfb3M as example,

but your provider use different setup

[Dhanunjay]

its the network provider problem.. in places where network is week the network gets disconnect and keep connecting.. in such conditions Data connection takes time to connect again.. I had this problem.. i simply ported to Another network with 3g Circle