Product Name: Car GPS Tracker Tk205 Replied Real-Time Tracking Information Under GPS Satellites Signal Support Website and APP Tracking (tk205) Model NO.: tk205 Warranty: 1 Year Certification: RoHS, FCC, CE Use: Automotive Screen Size: No Screen Trademark: ate Transport Package: Box Specification: 100/box Origin: China HS Code: 8526911000 Product Description Product specificationContentSpecs.Dim.85mm x27mmx16mmWeight26GNetworkGSM/GPRSBand850/900/1800/1900MhzGPS sensitivity-159dBmGPS accuracy5mWork voltage9V-90vTime To First FixCold status 45-85sWarm status 35sHot status 1sStorage Temp.-40°C to +85°COperation Temp.-20°C to +55°CHumidity5%--95% non-condensingFAQ and processing methods FAQInstructions/SolutionsFail to turn it onPlease check if connect to power 9V-90V and red light if SolidNo GSM signalPlease check if SIM card installed correctly and have money,have gprsthere a mobile phone GSM signalPlease check if SIM card is 2G or4G/3GCompatible 2G GSM network.lDon't turn on the PIN codeandno calls can be divertedllno calls can be divertedlPlease check if voltage of the power is normalllPlease check if voltage of the power is normalNo GPSA more open view of the sky is recommended to make sure the receive the GPS signal normally.in outdoor and take device to walk aroundNo reply to SMS commandPassword wrong or the format is wrong. restore factory settings send messagesbegin123456SMS position OK, cannot the APPpositionPls check if APN is correctly setorcheck whetherhave GPRS in sim cardPlatform position is difference and the actual position.position time don't update or no GPS signal: call the deviceSIM cardnumber and receive the position message. If it shows like Pic 2, pls make sure the device can receive the GPS signal normally.in outdoor,and take device to walk around, make sure sim normal