Go to mobile Settings and see if the following settings are available:
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Battery & Battery Optimization (turn off battery optimization) as well as Battery saver, PowerMonitor and Power saver
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Apps & Apps optimization (turn off optimization)
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Autostart settings (turn on auto start for Safe Lagoon)
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To allow apps work in background, please do the following:
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Go to Phone settings > Apps > See all apps.
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Tap on the right top corner menu > Show system.
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Find Power saver or Battery Protection app in the list, select it and Force close
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