Samsung BlackJack SGH-i607
Codes for Edge?
Toggling 3G on the Samsung Blackjack isn't something that can be done by any visible menu, you have to instead enter into an admin menu by dialing the following code: *#1546792*#.
And then repeating the process to switch it back.
The link:
http://anandtech.com/printarticle.aspx?i=3036 »
*#1546792*#
then go to 3
then 5
select Auto
Hit done
and end