2020 Upgraded IoT GPS tracker: Internet of Thing technology, 4G coverage, AT&T certified device, wider service range, 10000mAh super large battery, extra-long battery life, super low power consumption, quicker response, accurate pinpoint, easy to use, professional platform, user-friendly APP. Geo-Fencing is a mature technology, but this technology has proven to be extremely battery-draining. Please consider it if you prefer a longer working time. History Record and Mileage Statistics Easily pull up trackers location in real-time, or view a record of where it has been, when it was there, and even whether or not the car broke the speed limit. International SIM Card Supports roam across T-mobile, AT&T, Verizon, Sprint, and any network in u.s. Ablegrid will pick the carriers automatically, no manual setup is required. Mufti-Carriers network ensures you can use the trackers in rural areas where another 4G network has greater coverage, quicker transmission speed, and more accurate positioning. ABLEGRID trackers have customizable update frequency and flexible tracking mode vs other brand tracks only provide a fixed update rate, which is inconvenient and unfriendly to the user.