To boldly take the T-Mobile Sidekick where no mobile has gone before? Well, not exactly, but cool nonetheless. Those goofy guys at Engadget have decided to see if they could “unlock” their old Sidekick so that it would be able to function with non-T-Mobile SIM cards. Were they able to do it? Better read on to find out!

So we’re using the new Sidekick II, but we wanted to know if we could unlock the old Sidekick we had lying around. By unlocking it, of course, we could use any SIM card from any carrier to enable the Sidekick to call and text message. While the data functions won’t work without a SideKick account, we wanted to try and use it as a phone and SMS device. What? Don’t scowl, it’s not just a mobile communicator, it can make calls too, remember?