To begin, you need to pair the tracker to your phone number. From your mobile phone, send the SMS command “” to the phone number of the SIM card inside the tracker. You should receive a reply SMS confirming that the binding was successful (e.g., "Set: Bind number:+49XXXXXXXXX successfully"). This step links the device to your phone number so it knows where to send all future replies.
To power on the device, open the card slot cover by sliding it outward. Insert the microSD card into its designated slot (usually the top one). Then, insert your activated GSM SIM card into the , ensuring it is fully pushed into the track. The device should automatically power on once the SIM is correctly inserted.
Verify the server IP/domain ( www.gpsui.net ) and port number are accurate in the SMS settings.
| Function | SMS Command | Description of Action | | :--- | :--- | :--- | | | 555 | Starts an audio recording immediately. | | Sound Monitor | 666 | Activates "audio monitor mode." The tracker will call you back when surrounding noise exceeds 40dB. | | Real-Time Location | 777 | The tracker replies with a Google Maps link showing the approximate location based on the nearest cell tower. | | Check Status | 888 | Replies with the device's current battery level and signal strength. | | Factory Reset | 444 | Resets the device, unlinking it from your phone number. | | Delete SD Card Data | 445 | Permanently deletes all saved audio recordings from the microSD card. | | Remote Restart | 999 | Reboots the tracking device remotely. | Gpsui.net Setup
Wait for the device to get a clear view of the sky for a GPS fix.
. Users can then log in to the platform with the device ID and default password to monitor location. For more details, visit www.gpsui.net
To see an asset on your map interface, it must be mapped to its corresponding physical hardware inside the database. To begin, you need to pair the tracker to your phone number
Ensure your tracker (e.g., Coban, Teltonika, or generic Chinese models) is compatible with GPSUI, which is based on the popular Traccar or similar frameworks 1.
SERVER,1,gpsui.net,8870,0# APN,internet#
Setting up a tracker on gpsui.net is a straightforward process of sending SMS commands to a paired device. However, users must be well aware of the platform's significant limitations, including its questionable security history, lack of modern iOS support, and the fundamentally low accuracy of the GSM trackers it serves. For precise and secure tracking, this platform and its associated hardware are not a recommended solution. This step links the device to your phone
Verification: The device should reply with SET IP OK or a similar acknowledgment. Step 3: Define Upload Intervals
| Issue | Probable Cause | Solution | | :--- | :--- | :--- | | | SIM card has no data | Check SIM in a phone; ensure airplane mode is off. | | "Server Login Fail" | Wrong APN | Google "APN settings for [Your Carrier]" (e.g., T-Mobile, Vodafone). Send SMS: APN,123456,correct_apn | | Location is static/wrong | No GPS signal | Move device away from metal objects or underground parking. Wait 10 min outside. | | No map loading | Browser cache | Clear cache or try a different browser (Chrome/Firefox). | | SMS commands not working | Wrong password | Default passwords: 123456 , 0000 , or 1234 . Check your manual. |
If your device appears as "Offline" or "Not Activated," check these common failure points: Potential Cause Indoor location or lack of cellular coverage. Move the tracker outdoors with a clear view of the sky. Device Offline (Green light flashing, no data) Incorrect APN settings.
: Disable the SIM card PIN using a mobile phone before inserting it into the tracker.