1. Product Overview
The SinoTrack ST-915L is an advanced 4G LTE GPS tracking device designed for vehicles, motorcycles, taxis, trucks, and buses. It offers real-time location tracking, historical route playback, and various alert functions to enhance security and monitoring. Its strong magnetic design allows for easy, non-permanent installation.

Image: SinoTrack ST-915L GPS Tracker, showcasing its compact and durable design.
2. What's in the Box
Upon opening your SinoTrack ST-915L package, you should find the following items:
- ST-915L Main Unit
- Carry Bag
- User Guide
- Charging Cable
- Genuine Box

Image: All components included in the SinoTrack ST-915L product package.
3. Key Features
The ST-915L GPS Tracker is equipped with a range of features to provide comprehensive tracking and security:
- Real-Time Tracking: Monitor the device's location in real-time via SMS, mobile app, or web platform.
- Voice Monitor: Listen to the surrounding environment of the tracker by calling its SIM number or sending an SMS command.
- Multi-Functions: Includes shock alert, geofencing, over-speed alert, and historical playback.
- Waterproof & 4G Network: Heavy-duty waterproof design with dustproof and shockproof functions, supporting 2G and 4G networks.
- Strong Magnetic Installation: Built-in powerful magnets for easy attachment without complex installation.
- Long Battery Life: Built-in 10000 mAh Li-ion battery for extended standby time.

Image: Visual representation of key features including real-time tracking, history route playback, waterproof, geo-fence, overspeed alarm, shocking alarm, sleep mode, built-in 10000mAh battery, remote listening, and built-in powerful magnet.

Image: Illustration highlighting the built-in 3.7V 10000 mAh Li-ion battery, capable of up to 30 days standby.

Image: Depiction of the built-in 5PCS strong powerful magnets for easy, no-installation attachment.
4. Setup Guide
Follow these steps to set up your SinoTrack ST-915L GPS Tracker:
Step 1: Activate SIM Card
- Purchase a local SIM card with 4G (LTE) network functionality.
- Insert the new SIM card into your mobile phone to activate it and remove any PIN code.
- Ensure the SIM card can make calls, send texts, and has an active internet connection.
- Once confirmed, carefully insert the SIM card into your tracker.

Image: Close-up view of the SinoTrack ST-915L, showing the SIM card slot and charging port.
Step 2: Turn On the Tracker
- Charge the device for approximately 1 hour initially.
- The yellow and blue indicator lights will flash as the device searches for network and GPS signals.
- Place the device in an area with good reception (e.g., near a window or outdoors) and wait about 5 minutes for both lights to become solid, indicating a stable connection. If the yellow light continues to flash, move to a different location.
- Note: The device will obtain a GPS location when a GPS signal is available. Otherwise, it will use LBS (Location Based Service) for positioning.
Step 3: Setting APN for the Tracker
The APN (Access Point Name) settings are crucial for internet connectivity. You will need to send SMS commands from another phone to the tracker's SIM card number.
- Obtain your SIM card's APN details from your SIM card provider.
- If your SIM card's APN has no username and password: Send the text command:
8030000 [space] APN(e.g.,8030000 everywhere). The tracker will reply with "SET OK". - If your APN has a username and password: Send the text command:
8030000 [space] APN [space] APN user [space] APN pass(e.g.,8030000 everywhere eesecure secure).
Note: APN settings vary by SIM card provider. Adjust the command according to your specific APN details.
Step 4: Setting GPRS Mode
To enable online tracking, set the device to GPRS mode:
- Send the text command:
7100000to the device. - Wait approximately 30 seconds. Both the blue and orange lights should remain ON, indicating the device is active and ready for online tracking.
- You can now log in to the SinoTrackPro web platform or mobile app. Your username is the tracker's ID number (found on the product label), and the default password is
123456.
Setup Video Guide
Video: An official SinoTrack video demonstrating the setup process for the ST-915L GPS Tracker, including unboxing, SIM card insertion, charging, and initial activation steps.
5. Operating the Device
Once set up, the SinoTrack ST-915L offers various operational modes and tracking capabilities:
Tracking Modes
- Real-Time Tracking: Access the SinoTrackPro app or web platform to view the current location of your device. Locations are accurate up to 5 meters.
- Historical Playback: Review past routes and movements of the tracker through the platform.

Image: Screenshot of the SinoTrack tracking platform interface, showing real-time location and historical data on a map across multiple devices (desktop, tablet, mobile).
Working Modes
The device supports three primary working modes, affecting battery life and tracking behavior:

Image: Diagram illustrating the three working modes: Work all the time (2-3 days battery), Work when it is moving (about a week battery), and Standby (about 2 weeks battery, activated by SMS or call).
- Work All the Time: Continuous tracking, typically 2-3 days battery life.
- Work When Moving: Tracks only when motion is detected, extending battery life to about a week.
- Standby: Device enters a low-power state and can be woken up by SMS or call, offering approximately 2 weeks of standby time.
Alert Functions
- Voice Monitor: Send SMS command
66to the tracker's SIM number. The tracker will call back the control number, allowing you to monitor sounds around the device. Ensure a control number is set for this function. - Geo-Fencing: Set up virtual boundaries. The device will send an SMS alarm to the control number if it enters or exits the defined area.
- Over-Speed Alert: Receive notifications if the device exceeds a preset speed limit.
- Shock Alert: Get alerts if the device detects significant shock or vibration.
For detailed setup of geofencing, over-speed, and shock alerts, refer to the SinoTrackPro mobile application or web platform settings.
6. Maintenance
To ensure the longevity and optimal performance of your SinoTrack ST-915L, follow these maintenance guidelines:
- Keep Dry: Avoid exposing the device to extreme moisture or water, despite its waterproof rating, to prevent internal damage.
- Temperature Control: Do not expose the device to extremely high or low temperatures.
- Cleaning: Clean the device with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners.
- Regular Charging: Charge the device regularly, even if not in constant use, to maintain battery health.
- Firmware Updates: Check the SinoTrack website or app for any available firmware updates to ensure the device operates with the latest features and improvements.
7. Troubleshooting
If you encounter issues with your SinoTrack ST-915L, refer to the following common troubleshooting steps:
- Device Not Online:
- Send SMS command
RCONFto the device. Check the reply for correct APN settings, IP, and Port. - Ensure the device is in GPRS mode (refer to Step 4 in Setup Guide).
- Verify the SIM card has an active data plan and sufficient balance.
- Send SMS command
- No GPS Signal:
- Move the device to an open area with a clear view of the sky to acquire a GPS signal.
- Ensure the device is turned on and indicator lights are stable.
- SIM Card Issues:
- Confirm the SIM card is activated and has no PIN code enabled.
- Ensure the SIM card is inserted correctly (plastic side up, metal side down).
- Check if the SIM card supports 4G (LTE) network.
- Incorrect Location/China Location:
- If the device shows an online status but displays a China location, take it outdoors to a location with good signal to update its GPRS signal and current location.
- Battery Drains Quickly:
- Adjust the working mode to








