PiPO M9 - Manual (Page 18)

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In some cases, there may be no icon on the Apps Panel after an .apk
file is installed. Possible reasons may be that this app is not compatible
with your OS or the downloaded .apk file is a broken one so you may
need to download a full version.
5.2 5.2 5.2 5.2 Manage Manage Manage Manage Apps Apps Apps Apps
Tap to open the ‘APKInstaller’ → ‘Manage’. Tap the app and then you
can launch, export, and uninstall it.
You can also go to “AppS” under “Settings” to manage apps.