1.Why the battery life is so short ? Because device's main power supply is from Car Charger plug into the Cigar Lighter, not from built battery. Device's built battery just assistantthe device normal working. Note: you must use the original car charger,and then it will work.If you use other charger causing the product stop work,we do not bear any responsibility, please understand. 2.Why the device doesn’t have sound ? Please kindly check whether you have turn on the FM transmit function or not.if FM transmit turn on,then device will not have the sound. 3.What's the FM transmit function and how to use it ? The FM is transferred the sound from the device to the car stereo.You have to turn the FM frequency(which is not used usually) the same as car frequency ,then the voice can come out through car audio. 4.Why the GPS does not have the satellite or sometimes GPS satellites search slowly? Weather, High building, car protect film, outdoor or not will influence the GPS satellites searching, please go outdoor and open space to search satellites. And the first time GPS searching will take a bit long time than the second time, please kindly wait. 5.Why the map shows the other country(such as Europe map shows Russia)? We have installed the map ,but we install the map by the continents,so when you use it , it will show one of the map in the continents, you just need to make sure it search the satellite successfully and type the address you want to go , then it will work . 6.Why the device only partof the memory can be used? About the memory: memory and cache can not be used 100%, which is normal. Device firmware and map software will take up memory and cache, please understand! (if the device built in 8GB: GPS can only display about 5GB of memory or less) (if the device built in 16GB: GPS can only display about 12GB of memory or less) 7.When I change the language, why the device still have some English or Chinese? GPS Android supports multiple languages, but cannot translate 100%. Still has some English or Chinese. Please understand! but do not worry , our device is very easy to be used, and if you have the trouble in understand the words , please contact with us , we will help you . 8.Why the device can not turn on or freeze? A: If you use it in the wrong way ,it may cause this , please try this : Keep charging with the orginal charger for half an hour, then click “ reset”in the back of the device for five times in a row. 9.Why there is no instruction? why it is not the same with my device's ? does the instruction have the other language? do you have the PDF file instruction? 1.Before you buy it , check our page clear , if the the product accessories has the instruction , then we will send to you . 2.The product's instruction is a generic version, it can be used the same model device, it is just for reference. 3.Most of the instruction only have the English version now , and we do not have the PDF file instruction.Don’t worry , if you have problems please feel free to contact with us .We will help you because we are the best instructions , we can help you solve it more quickly! 1.How to check the Android navigator’s RAM? Please enter “settings”--- apps--running If you see “RAM 358MB used and 119MB free”(358+119=504MB), it means the device is RAM 512GB; it is the same way to check the RAM 256GB/1GB. 2.How can I install the apps ? We can not make sure the google play can be used , but you can try our method: 1.You can download the apps from the computerand copy to the SD card , then install it in the device , it will work . 2.Or you can download the local apps store from the computerand copy to the SD card, then install it in the device , then you can download the other apps from this local app market. Note: if you can not install the other apps or can not run the other apps , please check the cache or whether this app is compatible with our device ! 3.Why I can’t use the google play or other app storein the device ? 1. Some app only support installed on Internal storage. 2. Maybe the .apk is not compatible with our device system version. 3. Power management app black screen protection caused this, can uninstall this type app. 4. Too many apps running at the same time , caused the cache is not enough, it will forced the apps stop working or install 5. System caused this. 4.Why whenrun the apps ,it is stop working ? When the device install andrun the apps , itneed the enough caches to support this.When don’t haveenough cache , the apps will stop working . so you can do the follow method : 1.Go to the settings--apps-- to delete some apps that you do not need 2. Go to the settings--apps-- to clean the cache 3.Close some apps, don’trun too many apps at the same time ; 5.Why the device shows enough memory , but the apps can not be installed? Because the device is also Android device, like androidsmartphoneOR tablet PC,.It’s firmware only set up RAM available for application installation, and you can not change the RAM. And the other memory is available for GPS data and files storage, it’s can’t support application install. 6.Why theAndroid GPS is working slowly? GPS navigation is professional automotive supplies, we do not suggest you useit as the tablet, please do not download too much other software, such as: games, videos and soon. Because it will cause the device to run slowly, we suggest thatuse thesmart phone to download the software. 7. When I use the DVR , why it ask me insert the card? which card is needed? 1. All of the DVR need to insert the TF cardto recordvideo. 2.When you insert it before turn off the power 3.As the DVR is very strcit totheSD card, we recommend thatuse the high speedclass10 and 16-32GBTF card. Because the lowerspeed card may appearfreezingwhen record. If DVR could not identify the memory card, please format the memory card in computer first, and then format it in DVR for 2 times , or change the good quality TF card. 8. How to change the device language. Go to the settings--other --more --language 9.How can I install the mirror in the car ? the device need connect to the car fuse, then It will work well , you can not charge it buy the USB , the power is not enough; and you need to do it like this , 1) turn off the car , use the Test pencil to check which one will make the Test pencil light , and then this one is for the yellow cable , 2) turn on the car , use the Test pencil to test , which one will make the Test pencil light , then this one is for the red cable . 3) you need charge the black cable to iron or the ground cable 10. the bracket not suit for my car , what should I do ? A: please do not worry , if the bracket not suit for your car ,then you can use the balls , see my picture . Universal bracket ( Support for all cars ) If you have more suggestions for me , please tell me , we cherish each buyer’s suggestions; If you are satisfied with my service , please give me the full 5 star feedback , it is so important to us! 
