Disabling iPhone features when traveling?

Is there a way to disable all network related services on the iPhone? I am considering buying one, but I will be traveling to Canada in a months time. I would obviously want it with me, but not if it's going to charge me roaming just to listen to music/take pictures/be powered on. I was reading about an airplane mode, but I would still like to be able to use local wifi.

If you have the music and/or videos already on your iPhone, then you shouldn't be charged roaming charges...unless you make a call from it that is. Check with your cell provider.

Go to Settings> Airplane Mode (off)

No internet etc...

wifi will work, when on wifi with iphone you are not using any network data. a new iphone with the newest update now allows you to disable the at&t network when traveling.