Is it possible to track a lost GSM phone if somebody removed the owners SIM card and replaced it with their own? My friend lost her phone, she tried to call it but it just goes straight to voicemail. She reported it as lost of course, but is there anyway for the service provider to track it still? The customer service rep she talked to didn't seem very "with it" if you know what I mean.
I just thought I'd ask here because I know there's some techy guru types here who know this stuff