I just discovered this and it works fantastically on any old / unused android device you might have lying around, I was shocked at how easy it was, all the instructions are there, once you have it running all you need to do is set your router DNS settings to your pihole IP address and presto! Ads and trackers are gone!
Most mobile devices won’t work without batteries. The best way to work around this is to supply it with 4.2V (anything between 3V and 4.2V will do) over the battery connector.
I think I might have broken something, even when I clip the battery back in I get nothing 😟
This could be a long shot but if it’s a Samsung Galaxy Tab S, the battery connector solder joints kinda die after a while, which can either be fixed by reflowing them or by applying pressure (I have a tablet with that issue). You could try pressing on the battery connector and see if it works then.