SIM from 1st gen Droid to a Droid 4?

[MizT]

I got a new (to me) phone! Yay me! dancedroid

Can I switch the SIM I already have in my 1st Gen Droid to the Droid 4?

I couldn't find this exact question. I humbly bow to the techies.

 

[Mr_Wolf]

Remember you need a microsim to get it work on Droid 4.