I've recently broken the screen of my Samsung Galaxy S7 (model number: SM-G390F). USB debugging should be enabled, however MTP seems to be disabled as data cables (work for file transfer with other phones but not for this one) are able to charge it (vibrates when plugged in), but neither the file explorer nor the adb list of devices features it.
Are there any way to force the recognition, to get around it not being detected, to mirror the screen or use a different output, to check if the touch is still active or both screen and touch are broken? To figure out where one would need to do blind presses to enable the necessary permissions?
So far I've tested several cables and are in possession of data micro-USB cables for data transfer, I tried to access it via adb and failed, I tried to do this power, home, vol up or down, but I don't see a result with screen broken. I've read several post on this topic but they are either outdated or weren't successful. Are there any options that come to mind on how to access and recover the data on the phone?
Edit: The only response left from the screen is that the pseudobuttons left and right from the home button light up when I press the home or power button. Also the light in the top left is occassionally blue or red (when charging). Attempts to take screenshots on an sd card (unfortunately only inserted after the screen stopped working) have not been successful, though that could just be a me issue and not a phone issue, I'll keep trying later).