Tracking the PeTrack is not limited to the use of phone apps. You can actually track the unit without installing any of its available phone apps (i-Server and TBPT).
To track the unit, just simply call the PeTrack using your mobile phone. You will hear the line ring once or twice then disconnect. A few seconds after the call disconnects you will receive a text message from the tracker, just like the example below.
#G MSP340A http://maps.google.com/?q=25.070310N,121.592933E 150113081012 IMEI=357852039494938 S=15.8 C=254 SAT=12 V=4.15 CSQ=99 M=A0 SN=96381
#L MSP340A http://www.map110.com/?x=030.94&y=119.14 150113081012
IMEI=357852039494938 V=4.15 CSQ=99 GPS=ON M=A0 SN=96381
#G stands for GPS - this means that the tracker is getting its location from the GPS satellite. If you see #L (LBS) just like the second example, this means that the tracker is getting its location from the nearest cell tower and this normally happens if GPS is not available or turned off. This is (#L) not the text response you want to see. If you attempt to tap the link given in a LBS response, it will not show you any location since it is an invalid link. And, GPS is more reliable than LBS.
25.070310N,121.592933E - the current coordinates of the location of the unit (latitude, longitude). You can input this in Google Map or any mapping software to see the location on a map. Or, you can click on the hyperlink or URL (if you're using a smartphone with data service) to view the location on a map without manually inputting the coordinates.
IMEI=357852039494938 - the IMEI of the unit
V=4.15 - the unit's current battery level. If it is 4.1x or higher it means that the battery is fully charged. If it equals to 3.60V, this means that the battery needs to be charged.