The high quality weather resistant and Professional Grade Portable GPS Tracker. find a location of anything it on a map, when and where you left something behind. LAST SEEN LOCATION – The Innway app records the time and location your Innway Card disconnected from your phone. Navigate to the last seen location via the app to find your item. .. Precise positioning, two pieces of strong magnetic adsorption without assembly, long time standby, very convenient .. Support remote operation of mobile phone. Function: record, sound monitoring, GPS track, machine state, restart. .. Compact size, easy to carry,not easy to find when placed. 1) In order to achieve a more accurate location, it is recommended to use a mobile SIM card and confirm that GPRS is enabled (this will not generate traffic if you send a DW SMS to reply to the location. If you send DT or DT3 to query on the map, you need to enable GPRS monthly rent first, which requires traffic. If you have just bought a card, it will take the next day to find the signal. 2)Use a SIM card, try not to store too many text messages, especially when it is full, so as not to affect the function. 3)The new machine should be fully charged before use to achieve better results. 4)The light is off and the battery is dead. Use it after charging 5)Unable to make a call, re-insert the card, or use it after charging 6)Do not answer automatically, reinsert the card 7)Make sure there is caller ID function, do not enable call forwarding 8)Confirm that the PIN code of the card is turned off. 9)Recharge the battery before use. It is forbidden to burn the machine during the charging process. It is best