From what I am reading here this appears to be possible right? I only very occasionally need/want a cell data connection and this seems like an ideal solution for when I don't want to lug the iPad. I don't need voice at all because I have a work phone. Looking to get a 3Gs that is 4.0.2 and 05.13.04, will get a sim adaptor. Not jail broken or unlocked but it looks like I could do both. I assume i can use the phone like an iPod without the SIM in it?