Can an iPhone still be used as an iPod without phone service?

I was looking for an Ipod touch 4 and found someone selling an IPhone 4 for 60 bucks. Can I still use this and do all the things an ipod does without having phone service for it?

Yes, everything except for iMessaging.

Yes you can!

Yes, with out a SIM and iPhone turns on as normal and you can play music, go on the internet. The only thing you can't do is call or text anyone because obviously you don't have a service.

Yes you can

people who say you can't use imeesage, ignore them, you can use imessage if you have internet.
you can't call because you have no service
you can download apps that can call anybody over the internet like textme2 and viber.
you should never get an ipod, get an iphone with no service so when you want service you don't have to buy a phone, just use the iphone.

Sure can. We gave our old iPhone to our 9 year old and he uses it just like an iPod touch.

Yes it can. If you take out the sim card