[Samsung Galaxy Note 9 Questions & Answers] IT_Architect:
1. Do you use Samsung Pay?

2. I do manual updates of specific apps from the play store because call recording apps that uses the call logs to document call recordings using the phone number and contact name no longer work thus destroying its functionality. They not only destroy their ability going forward, they also destroy the history. This was caused by the play store updates, which they force on developers. Thus, you must download previous versions from apkpure.com etc., or have a backup copy, which is what I have. The other side I need to protect myself from is their "Security Policy Updates"/play store malware, that freezes app my older call recording apps. Thus, play store automatic updates and their "Security Policy Upates" make the play store less honorable that those who write ransomware because at least with them you can pay to get your data back while you cannot do with the play store.

3. You can record calls on Pie, but with any version of Pie, the call recording quality is terrible while the same phone flashed to Oreo is crystal clear.

4. Android 10/Q/Quicksand or whatever update stops call recording altogether so now the only ones with recordings of your phone calls, call logs, texts, and contact lists, are your phone manufacturer, wireless carrier, Google, the NSA, and anyone who will pay a nickle to have access to them, as long as they aren't the same people who participated in the conversations. Another "feature" of the Android 10/Q/Quicksand update is it kills Android Beam for exchanging data. However, in exchange for killing these capabilities they give you "long-awaited system-wide dark mode", which you could make happen on even Note 3s and 4s until they took it away, to where you needed 3rd party app, and now you don't need a 3rd party app because they are giving it back as a new feature.

5. A Note 9 frozen to Oreo with blocked "Security Policy Updates" is worth far more than a Note 10+ and beyond will ever be. You want to do frequent backups with matching pre-2019 APK and Windows versions of backup software such as SmartSwitch, and another backup software in case you want to switch to another brand phone later. That way if they slip in some of their ransomware 2.0 or other malware, you can re-flash and restore your phone to full functionality.

The way someone can determine if they have a diseased version of Oreo is to download the call recording app, "Automatic Call Recorder" by Appliqato from APKPure that is version v5.43.11 or older. If Oreo allows you to install it, make a call to and from your phone from a contact in your contacts list. If the app doesn't freeze, go into the call recorder and check your recordings. If you do not see the name of the person you called or who called you, then you have the disease and need to re-flash Oreo. See Restore Call Recording to your Note 9 SM-N960U and SM-N960U1 to stay safe from malware authored authored by the carrier and play store. Simply because they are incorporated or are a government-run clandestine operation doesn't make them honorable. The same can be said for Mafia's businesses and the government of Democratic People's Republic of Korea, which is neither democratic nor belongs to the people. In the US, the Edward Snowden revelations, FISA court violations, and deep-state investigations, leaks, social media "oppsies" prove that you need to do your own due-diligence because with regard to security because you are the product being bought and sold like a pack of cigarettes to fund Google, Android, IOS, apps, agendas, etc.