How do I find out how long a Samsung Android device will be security supported? As we all know, surfing the Internet with a device that no longer gets security updates is a sure recipe for getting hacked.


If I have a Samsung Android device, how do I find out whether it is still officially "security supported" (i.e., whether Samsung will push an OTA update when a security vulnerability is discovered) or not?
If I consider buying a new Samsung Android device, where can I look up how long it will be security supported by Samsung?


(I don't care about feature or OS version upgrades; this question is only about security updates. In addition, let's keep things simple and restrict this question to devices without a carrier lock - I know that carriers can delay updates, making matters even more complicated. I am looking for something like this for Samsung Android devices.)
Unfortunately, like most Android phone manufacturers, Samsung does not give any guarantees about future security updates.

They do, however, have a web page telling you which models are currently scheduled for monthly or quarterly security updates:


Samsung Mobile Security - Android Security Updates


Judging from the current (2017-10) content of the list, it appears that the duration and timeliness of security updates depends on the price of the phone: The 2015 flagship model S6 still gets monthly updates, whereas cheaper models, even those released in 2017, only receive quarterly updates.