I had 2 Trackr stickers. Worked for a while but whenever I set it up it works until it has to function on its own and it doesn't work. Bought the Trackr Bravo and it worked for a while but became less and less responsive. Finally it stopped working altogether. I changed the battery but it still didn't work. The last time I had to find my phone in the apartment I used the free online phone to call my own number and located by phone. As a disabled senior who relies on his cellular phone it wasn't helpful for very long.