GPS Cards PREPAID Sim for ZHIFENGLIU Waterproof GPS Pet Tracker/ Geofences Stay connected and keep track of your furry friends with the GPS Cards PREPAID Sim designed for the ZHIFENGLIU Waterproof GPS Pet Tracker/Geofences. This versatile Sim card is compatible with 4G, 3G, and 2G devices, making it a reliable choice for over 1500 GPS tracker models. With the included TurnKey Mobile App, you can easily monitor your pet's location in real-time. The easy setup process ensures that you can start using this cost-effective solution right away. Key Features: Compatible with 4G, 3G, and 2G devices Works with over 1500 GPS tracker models Includes TurnKey Mobile App for tracking