What someone said it was lucky the toiket water they dropped their phone in was clean? Didn't you take microbiology man? There is no such thing as a clean toilet. Face it you had feces on your face and mouth. Just sayin...
You said you only pulled off the STICKER right? .... Why would this impact your GPS ... unless the guts to the GPS was attached to the sticker??
have you actually tried it to see if it was really dead? If worse comes to worse, just go to VZW and tell them your phone is broken and the GPS doesn't work and leave the story at that. See what happens ... good luck