Tips: How to Disable 3G/Edge on iPhone
Posted by Watson under Tips on Wednesday Apr 1, 2009
As mention in previous post:
“Maxis 3G/EDGE/GPRS Charge is Expensive!!!“
I found a way to disable the 3G or/and EDGE on your iPhone. You can enable it anytime you like if you need it.
Try out this application: BossPrefs 
(You may get it from Cydia for FREE.)
You can use this application to
- Disable/Enable 3G (Disable this to save you tons of money)
- Disable/Enable EDGE (Disable this to save you tons of money, since it charged the same rate as 3G)
- Disable/Enable WiFi (Any reason we need to do this? As far as I know, NO.)
- Disable/Enable Bluetooth (Good feature, why should I disable it?)