Android 7. Hmm. I got a cheap Chinese tablet running 7 and it doesn't support Hubitat or the version of Chrome needed to run the dashboards due to a WebView issue. So just be ready for all of that potential headache.
I have a Samsung Tab-A, running Android 7.1.1 with Fully Kiosk Browser v1.16 and all my dashboards are running perfectly.
That said, Samsung is not another brand and I can't say anything about compatibility.
*Edit: I have also several chinese android tablet/dual boot (win/Android) tablets. The main problem I have with those tablets is that, even fully connected to the charge port - usb, the running tablet discharge itself a little bit until dead. I never had a single charge problem with the Samsung Tablet