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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 10:21] – admin
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   - 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.
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+**IMPORTANT NOTE:** Under 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 }}]]