You might remember that in November, OnePlus updated the 3 and 3T to Android 8.0 Oreo.
The update brought a bunch of new features and a few bugs, too. To
squash them, OxygenOS 5.0.1 started rolling out near the end of
December. It fixed bugs, added support for aptX HD, brought a new Wi-Fi
hotspot device manager, added an adaptive mode screen calibration, and
included the December security patch.
But despite all the dead bugs and new features, a new issue has popped up. Google Play Protect is now warning users running
OxygenOS 5.0.1 that an app called “FactoryMode” might be harmful.
Google Play Protect prompts users to uninstall the app, although users
can keep it even though it may not be safe.
What is FactoryMode? The app used to be called EngineerMode and
is used during device manufacturing. It is generally used to test phones
before they leave the manufacturing line, but after sales support uses
the app as well. You can safely remove it with Google Play Protect, but
you might have issues if support staff need to use it in the future.
The app was the center of controversy in November due to its role in granting root access to OnePlus devices.
A security researcher was able to gain root access to OnePlus phones
using an exploit in the app. OnePlus later patched the exploit and has
since changed the name of the app.
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