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Android configuration Unfortunately Google continues to turn the thumbscrews on apps which run on the huge variety of Android phones. As a result you will need to perform the following additional initial configuration. Android power-saving First, please be advised to check and follow instructions for your phone at https://dontkillmyapp.com/. This is particularly relevant for Samsung users following Android 11. This has been seen to not bother providing location updates to Tracker if it has not been used for a while. Some settings advised on this webpage should help. Second, all users - YOU MUST MANUALLY CHANGE TRACKER LAUNCH TO "Manage manually" For most, this is found in Settings >> Apps >> App Launch >> Tracker and untick "manage automatically" - then optionally in the pop-up disable"auto-launch", "secondary launch" but allow "run in background": Android phones like to have "power saving" settings where they cull perfectly valid apps running in the background or when not being viewed. It is important to check that Tracker is excluded from your phone's power saving settings, or turn this off (along with any "power saving" of GPS and data). It should prompt you, Tracker must not be "battery optimised". and if you still have problems you may need to look further: Whitelist from Aggresive Doze Mode, found in Settings >> Battery >> 3 Dots right top corner >> Aggresive Doze Mode Set app management to "Normal", found in Settings >> Advanced >> Last App Management >> Normal Clean Enable gaming mode for Tracker, found on OnePlus phone under Settings >> Advanced >> Gaming mode. Add Tracker so the "Automatically turn on for these apps" list. Gaming mode settings themselves just leave disabled (i.e. allow notifications, no battery saver, no lock screen brightness etc.) Under Settings >> Battery >> Launch on Huawai Honor 9 Lite (or other EMUI phone?) for Tracker to manual, with no auto or secondary launch but leave "run in background" ticked. May also need to go Settings >> Battery >> Battery Usage >> Power info >> Tracker and untick Power-intensive prompt. On Huawai P9lite (Android 8) Settings >> Battery >> Launch >> Tracker >> Off (Manage manually) (three slider bars then appear, leave on) Disable Doze Mode under Developer Options (present on OnePlus phones at least). Go to Settings >> About Device and tap "Build number" until the message "You are now a developer" appears. You can now go to Settings >> Developer Options and turn "Doze mode" off. Android location services Your phone may have the following settings which then need to be changed. The settings move around but are now generally all under Android Settings (the cog symbol on your phone) as follows. These are the important settings in recent phones you need to check: Ensure Location Permissions set to "Allow all the time", found in Settings >> Apps >> Apps >> Tracker >> Permissions >> Location From Android 10 you will likely see a Google Location Accuracy setting under "Location Services". Turn this off. Failure to do so will result in just one or two positions in your tracking. Note this is really easy to accidentally turn back on again, as your camera app may prompt you for "better location" if geo-tagging photos. Say no. Network You may find that your texts and data stops working, although Tracker itself keeps running fine. On landing you may find you have a good signal but no internet connection. This may be due to a bug in the phone itself. Under Settings >> Mobile Networks >> Mobile data >> Preferred network mode see if you can change to just 2G/3G or 2G/3G/4G instead of all bands. For range, and most reliable stack, 3G is best. General advice Please test Tracker a day or two before planned use to ensure it is still working with your phone, which may have updated itself or decided you are not using it frequently enough. Dual-SIM phones If you are using a dual SIM phone, Tracker texts will only work correctly if your phone is configured to set up to send and receive text messages from SIM1. Unfortunately in Android there was no official dual-SIM support so this is all manufacturer specific.