I am not sure if you will find end of life info conveniently in a table. With my two end of life devices, I searched carefully for “the very last” stock ROM to have been archived.
In the case of your S7 you might check with one or more of the Samsung unofficial archives – I know of no Official Samsung archive.
- https://www.sammobile.com/
- https://samfrew.com/
- https://samfw.com/ – search by IMEI Check Samsung IMEI information in SamFw.com
-
https://sfirmware.com/
- Source: What is a stock ROM and how do I get one? – Know your hardware - Samsung.
To find what you have today on your phone go to
Settings > About phone > Android version
Notice there are two different Security patch levels – the image is from my Samsung A3 (2016) running /e/OS – so specifically for my device
- Android security patch level – the latest Android SP which came with /e/OS
- Vendor security patch level – this will amount to the date of the last Manufacturer’s “Software revision” which I had running before /e/OS install.
I would suggest that if you note the current Vendor SPL date shown on your device, you might then check the archives to see if there was any software revision since your recorded date; if not, you are “up to date” in that respect.