Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
I don't know how to do that.

But why don't you just use an iPod Touch? With your needs the only difference is the Touch doesn't have GPS.
 
Maybe someone gave this person the phone? I used mine as a Touch for about 2 1/2 months before activating it. I wanted to wait for the 2.X software platform to stabilize, and for the JB/UL community to catch up.

I'm barely using it as a phone now. It's got a t-mobile pre-paid SIM with 1000 minutes that will probably last me the entire year that the minutes are valid. What can I say? I use the phone to communicate information, not chat. Rare will be the month that I go over my 83.3 minute budget, which, by the way, costs me $8.33 per month. :)

You can just use it with whatever SIM was in there, or remove it and get a no SIM message. I just left the stock AT&T SIM card in until I bought a new one.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.