I chated with an ATT rep couple days ago regarding unlocking my wife's old iPhone4 and she told me it's unlock and send me a procedure on how to unlock (restore as new from iTune...bah bah bah). After the restore completed on iTune, I never go the "unlock" message (It was there when I unlock mine iPnone4 couple months ago from ATT). I perform another restore with no unlock message again. I check with couple IMEI checker site and both said "locked" I finally pull out a micro SIMS that I used last year when I was in Italy (no longer active but WAS activated last year as pre-paid) and it has signal but said no service. Does that mean "unlocked" or I have to pop in an active micro SIMS and have signal to confirm?