Switch over 2G to 3G not working properly....do you people also face same issues.....

Yup a long way to Go for L520 to receive black update...

one thing if you have a good internet connection like 3g of wifi then dont be afraid your all application history is saved in hotmail id's purchases hitory, in which all application are listed also purchased app!! reinstall it from thta list
 
The same problem in my L620. Changing APN does not helps either. Carrier is Aircel. Finally switched to use only wifi.

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For me also same issue. cant connect to 3G. always connect to EDGE. please help, im getting bored on this. Lumia 625.