Thanks, I'll go into settings and see I guess. 6 years old maybe?
That's almost above my pay grade with these things though.
Just looked. 6.5 years old, Android V 5.1
You can still block ads. Use a free adblock app called Blokada. Might have to have some young kid help you set it up(its not that hard) and version 4 from this download page will work on your phone.... Blockada 4 , scroll down some to see the link.
