Hi
I currently have an Iphone 3GS which was originally locked to Vodaphone. The mate who I got it off had it unlocked and I am now using it successfully on Tmobile.
My question is-is the phone now locked to Tmobile (by virtue of me putting my SIM in it) or if I sell it on will it work on any network?
Cheers
Steve

Apparently it is locked to the relevant network when the sim is inserted, if you get in touch with T-Mobile then they should let you unlock as they didn’t sell you the phone and you are probably out of contract

if its unlocked, it should stay unlocked.

Hi
Cheers
for the replies but they conflict somewhat!!!
Anyone else know?
Cheers
Steve

Should stay unlocked forever once it has been done once. However if you do a factory reset it would re-lock it.

thrice votes for now permanently carrier unblocked

Unless the iPhone does something odd, a phone is either SIM-locked or it isn’t. If it’s been unlocked from Voda, it’s unlocked and will stay that way.

That said, I wouldn’t be totally shocked if Apple did something unconventionally fruity with it. Can’t you drop your mate’s SIM back it to test it?

Depends on how it was unlocked. If it was done via Apple then it will stay unlocked forever. If it was done by some shady market stall then chances are it’ll relock each time iTunes is updated.

When I had mine unlocked I tried it with several different sim cards and they all worked, so I’m going with “it’ll stay unlocked”…

Cheers all
It was unlocked through Vodaphone so hopefully all will be well.
Steve