The package of JM-VL03 doesnt included the sim card, please confirm the band of sim card youre going to
 use matches with one of the JM-VL03 band:
 JM-VL03E:
 LTE-FDD: B1/B3/B5/B7/B8/B20
 LTE-TDD: B34/B38/B39/B40/B41
 GSM: GSM900/DCS1800
 JM-VL03ME:
 LTE-FDD: B1/B3/B7/B8/B20/B28
 GSM: 850/900/1800/1900 MHz
 JM-VL03MX:
 LTE-FDD: B2/B4/B5/B7/B12/B13/B17
 GSM: 850/900/1800/1900MHz
 1. Instant Alerts
 When your vehicle detects a vibration or moving, the device will give you
 instant alerts, you will get the alerts notification from APP or website.
 2. Remote Cut-Off (Fuel/Power)
 Immobilize a vehicle by cutting off its power source/fuel supply via an installed relay.
 3. Driving Behavior Analysis (Basic)
 You will receive Receive alerts when any of 4 kinds of dangerous driving behavior is detected.
 4. Ignition Detection
 Constant, real-time ACC/ignition status from the vehicle.
 5.9 -90V Operating Voltage
 Wide operating voltage range is suitable for a huge variety of vehicles, including industrial equipment, scooters, golf carts, and more.
 6. 4G LTE & GSM Network
 The device can receive and transmit data in the coverage of 4G and 2G network