Iphone 3G: Does phone have to be activated to use Wi-Fi?

Have old 3G. Have anther phone for calls. Wanted to see if Wi-Fi
could work without activation? Have tried to connect to router doesn't connect.

I had just got rid of my 3G, and when I took out my SIM card, I was still able to go in Wi-Fi.

No. Use my old 3GS that way. Reset the data connections on the phone and restart it. Best luck.

Thanks… Needed to confirm didn't need to be activated.
My problem was I have to toogle Wi-Fi enable off to on to refresh.
Then I was able to Wi-Fi.