Iphone sim card? Can iphone use Wi-Fi without it?

I have a iphone 5 that does not have service. It's my friend's old phone from Verizon, he upgraded to 6 and gave me the out of service 5. With that being said, does it even need the sim card? And can it still use Wi-Fi with no sim?

Yes you can use it without a SIM card. It might keep telling you that there's no SIM installed, but will still work.

Verizon phones don't use SIM cards (for call/texts). Yes you can use Wi-Fi without a SIM