Share your experience!
I'm sorry,there is maybe a thread with similar topic,but I couldn't find it ๐ my problem is that even my APNs are correct (i manually imported them from the site of my network provider),when I turn on mobile data traffic (and i'm registered on 3g network of my provider) nothing happens...no network connection,no 3G or gprs,and mms doesn't work either o.O and i recently changed my SIM card,but the problem is still here
anyone have a clue what's the problem?
I will try with SUS..but going to Sony Repair Center will be my last resort,because it is very far from my place 
tnx for your help
keep us updated
Ha...all good now
the problem was in my network provider...MMS and 3G functions were disabled on my SIM card..i called them,and then they turned them on
..what a joke xD
sorry for bothering you..and tnx again for all your help 
LOL