i have a sony ericsson z310a formerly serviced by at&t i am trying to use it for cingular could someone please help me unlock it imei : 35781201-456101-0
It's very hard to come across the master codes or the single unlock codes for the phone. But try calling both companies and ask for it, it should be for free.If they both say no, then call Sony and they might be helpful. (Just don't piss off the person on the phone, because they'll say no and hang up before you know it.)
