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--- docs:faq:how_to:record_track [2017/12/02 14:22] – admin
+++ docs:faq:how_to:record_track [2018/02/27 18:33] – admin
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   - When you want to stop recording track tap on **gray stop button** in the middle of right edge of GPX Viewer PRO screen.
   - Then dialog with entering **name** for track will be shown. Enter track name and tap on **OK** button.
-  - Next navigate to **directory** into which you want to export track and tap on **Confirm** button.
+  - If you have Android 6.0 and higher, you will be asked to grant GPX Viewer PRO permission to storage if you haven't done this already. If you don't grant GPX Viewer permission to storage in Android 6.0 and higher it cannot export recorded track into file. Next navigate to **directory** into which you want to export track and tap on **Confirm** button.
   - Next you can enter **track file name** and **description** and **file type** (gpx or kml) and tap on **OK** button.
   - It will export your track to desired file format and directory and show path to this file in short text message at bottom of the screen.
+<box 100% round blue>
+**IMPORTANT NOTE:** If you have Android 6.0 and higher, battery optimization is used and Android system restrict apps running time in the background. When you turn off display while recording a track in GPX Viewer PRO it may not record anything or record only some points. In this case you need to [[https://android.gadgethacks.com/how-to/android-basics-disable-doze-app-standby-for-individual-apps-0168960|turn off battery optimization]].
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+[[https://play.google.com/store/apps/details?id=com.oasisfeng.greenify|Greenify]] app can also kill GPX Viewer PRO while recording so you need to disable battery optimization in Greenify in order for recording to work properly while screen is off.
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+You can also use [[https://play.google.com/store/apps/details?id=com.smartprojects.MemoryLocker|Memory Locker]] and [[https://play.google.com/store/apps/details?id=com.silentlexx.gpslock|GPS Locker]] when you still have issues with track recording. GPS Locker will ensure that when screen is off GPS signal won't be lost so GPX Viewer PRO should record track properly.
+</box>
 Below is video showing following instructions above:
 [[https://docs.vecturagames.com/gpxviewer/lib/exe/fetch.php?cache=&media=docs:faq:how_to:record_track.gif|{{ docs:faq:how_to:record_track.gif }}]]