Disable iPhone Data Use
Thanks to the new iPhone OS update, you can easily disable iPhone data usage when on a cellular network (this is separate from the ability to disable data roaming).
- Tap on “Settings”
- Tap on “General”
- Select and tap “Network”
- Tap the On/Off switch next to “Cellular Data” to disable cell data use
- Close Settings
Now your iPhone will no longer use cellular data. You can enable use just by tapping the on/off switch again.
Combining this with a periodic check of iPhone data use is a great way to avoid overage charges.
This is really important when trying to stay within the data usage constraints of the revised AT&T data plans, which you can read more about on our iPhone 4 price guide.
Note that this ability was included with the new iOS 4 update, so prior versions of the iPhone OS do not have the same functionality.