Discovered LineageOS https://lineageos.org/ which is a replacement operating system for Android phones. The advantage of using LineageOS versus Android, is that it removes all the Google tracking apps. Basically, provides more privacy.
LineageOS is running on my PlusOne 7 Pro phone, which I bought on amazon for $150, which may be a defect because the screen has a slight pinkish tint to it. Don’t care at this point, because it just for playing around.
There are a limited apps that come pre-install. And at this time, not sure how apps are logged on phone. I have tried install Google Playstore and Amazon App store on phone. Amazon app store installed, but keeps wanted my to log in. Google PlayStore says its going to install later and never happens
LineageOS has its own Recovery Mode and not as powerful as TWRP.