How to disable edge/GPRAS and 3 G on iPhone

Works on all iPhone firmwares up to 3.0 and most cellular carriers*
* Personally tested on my iPhone 2G/3G 3.1.2 on Rogers *
If you have an iPhone but didn’t get a data plan be in for a shock after you see your bill. When out of range of a Wi-Fi access point, the iPhone will automatically connect via EDGE/3G periodically incurring expensive charges. Usually 5 cents per kilobyte, 1MB is $50!
Here is how you disable it.
1. Launch Safari on your iPhone
2. Go to iphonenodata.com
3. Tap the “Disable EDGE/3G” button
4. Tap “Install”
5. Tap “Install Now” to confirm
That’s it!
Go to “Settings – General – Usage” to check if you’re using anymore data. The counter shouldn’t go up from on.  As you can see, my phone never ever used any data.

If you try to browse a web page, this is what you see.  Data is blocked
.