iPhone digger

iPhone 2.0 allow you to use Wi-Fi while in Airplane Mode. To do this, simply enable Airplane Mode and then switch on Wi-Fi. The orange airplane icon will stay in the status bar and Wi-Fi will be enabled.

Apple says that the feature is good for those on Wi-Fi enabled planes, but it may come in handy if you're in an area with no cell reception (such as basement or college building).

In some country like Germany, data roaming is so expensive, so you couldn’t use 3G anyway unless money is not a big problem for you :). So effectively turned your iPhone into an iPod Touch by enabling Airport Mode and then turning on WiFi. This was important to avoid extra charges for receiving SMS internationally, but in case of an emergency you could still turn off airplane mode to make an incredibly expensive call.

Also as a note for those travelling abroad from the USA, don't expect your iPhone to work when you arrive in a foreign country. You have to call AT&T first to activate it and then answer some questions from their fraud department before it will work!