OnePlus Android 7.x Guide

These Settings must be properly configured to keep Mobile Tracker Free working.

Info: A password may be required to access the application settings. If you have not changed, the default password is *1234*. More information about the application password here.

1) Settings Setting.png => Battery => Battery optimization => « Wi-Fi » => Don't optimize => Done

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2)  Settings Setting.png => Advanced => Recent app management => Normal clear

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