FAQ's

The Global Positioning System, usually called GPS, is the only fully-functional satellite navigation system. A constellation of more than two dozen GPS satellites broadcasts precise timing signals by radio, allowing any GPS receiver to accurately determine its location (longitude, latitude, and altitude) in any weather, day or night, anywhere on Earth. GPS has become a vital global utility, indispensable for modern navigation on land, sea, and air around the world, as well as an important tool for map-making and land surveying. GPS also provides an extremely precise time reference, required for telecommunications and some scientific research, including the study of…

Many factors affect how accurate your GPS is. The atmosphere, the ionosphere and the position of your receiver could all affect GPS accuracy. Any buildings, natural structures or heavy foliage that obstructs the GPS' view of the sky may decrease the position accuracy.

Yes, think of your T23 as another phone. You insert a SIM card and that phone number is where you send your text messages to.

Your T23 will store up to 20 outgoing messages until it is connected to the GSM network. Incoming messages to your T23 are stored in the GSM network.

Your T23 stores your location when you enter the building and once outside and moving it will start updating your location again. The same applies to tunnels.

Check if the unit has power and not sleeping. You may see this with its green LED blinking. If this is your first use or the unit has been stored, charge the battery for 3.5 hours. If your T23 is installed then verify that GSM is working by calling the unit to see if you hear a ring tone. If no ring tone:There may be no GSM coverage, so move the unit to a suitable location.Verify that the PIN code was removed from the SIM.Remove the PIN code from the SIM.Verify you have the correct phone number.Verify that the SIM…

There are 3 user levels in the system: Owner - Can issue configuration commands and all below. Friend - Can use the reporting of the system and Guest commands. Guest - Can issue Find, Help and Status commands. Unregistered users and users without high enough security will not receive any response from the T23. This prevents unauthorized access of your location. The owner sets a password that can be used to re-register if your phone is lost.

You can re-register yourself as an owner by sending OWNER,password to your T23.

You can update the landmarks in your T23 for over 220 countries.

There should be no nearby tall buildings or houses. Antenna signal will not pass through metallic or magic type tint. Vehicle should not be moving when trying to get your first fix. Units should not be placed or covered behind metal objects. Acquiring your first location should take only 1 to 5 minutes with a good GPS signal in the area. Should the acquiring of a signal take too long, simply remove the unit's battery and re-insert it again - this re-starts the search process.

With ideal conditions 1 to 5 minutes the first time you use the unit. The unit can re-establish its location in a few seconds.

T23 can hold over 15,000 landmarks. Users can add hundreds of their own landmarks.

Check that the battery is installed. If first use or after a long period of storage, charge the battery for 3.5 hours. The power light will come on in 5-10 minutes. Replace the battery. Like mobile phones a T23 battery will wear out after a few years.

One day with constant usage and weeks with limited activity. This is determined by how much time the unit is sleeping.

Press and slide the battery cover. Gently push the notch lock of the battery. Lift the battery out.