I am using at&t and the phone i need to track is an at&t phone not on my account. i'm using a pantech burst with ISC. my niece is missing and the adult she was with. i would like to know if there is a way i can track the adults phone down without having to download it to her phone considering shes MIA and i cant do that. PLEASE HELP ME WITH A SOLUTION ASAP. the app also needs to be free, i have purchase restriction on my phone. PLEASE HURRY AND RESPOND WITH A HELPFUL SOLUTION THANKS IN ADVANCE!