GPS Cards SIM for Whistle 3 GPS Pet Tracker & Activity Monitor Grey IOS Android Stay connected with your furry friend wherever they go with the GPS Cards SIM for Whistle 3 GPS Pet Tracker & Activity Monitor Grey IOS Android. This prepaid sim card is designed to work seamlessly with 4G 3G and 2G devices offering reliable connectivity for over 1500 GPS Tracker models. With the TurnKey Mobile App included setting up GPS tracking is a breeze allowing you to monitor your pet s activity with ease. Get peace of mind at an affordable price with this convenient GPS Cards SIM. Key Features: Prepaid sim card compatible with 4G 3G and 2G devices Supports over 1500 GPS Tracker models Includes TurnKey Mobile App for easy GPS tracking setup