OnePlus phone are quite popular in ozb and I want to bring to your attention a security discovery on oneplus analytics software. It send excessive data of yours (e.g. when do you open and close an app like outlook) back to oneplus.
Read the full article and there's a method of removal as well.
https://www.chrisdcmoore.co.uk/post/oneplus-analytics/
To give a TL;DR summary the details it sends to Oneplus (as claimed);
* Phone Serial
* Hardware addresses
* WiFi network names
* Application start and stop times
* Power on, screen on/off, unlock
All with full timestamps and your timezone.
If you've brought the device directly from Oneplus (now that we can do this), they could even tie this to your name.
My conclusion is that as much as I don't like this - and it's probably enough to cause me to not buy another Oneplus phone - I don't trust that most the other manufacturers to not be doing the same thing. (I'd guess not Apple or Google, but the rest..????)
The real problem is even now knowing this is happening, how many non-tech people are actually able to stop it? Pretty much nobody.