How to switch from 3G and 2G/EDGE vice versa?

Question

I am trying to switch the network preference from 3G to 2G/EDGE through code and vice versa. I can able to switch on and off the mobile data connection. Now i need know how to s

Answer 1

As far as I know cannot do this as it is a restricted setting. You need a special permission, to change it. Take a look at this post.

edit: Updated link, working now