I have quite a few older Android devices, my main device runs 8(O) and I have some on 7(N), 6(M), 5(L). 4.1~4.4 support was already gone with Fenix, but now it seems like they got 5/6/7 as well. https://f-droid.org/en/packages/org.mozilla.fennec_fdroid/


My mother still uses a tablet with android 4 (and the last firefox version to support it) and I can’t convince her to spend money on a new tablet for anything.
Also, imo using an outdated browser is much of a bigger problem than using an outdated OS, as it’s the browser that connects to thousands of random untrusted servers.
Not usable for anything Internet-related really, but I still use Samsung Galaxy Ace with Android 2.3.6 as a secondary device. It lasts long enough in standby for me to just forget charging it.
But I got that refurbished on AliExpress. It seems to be reflashed with German version of stock ROM, but an odd thing is both have the same ID on ADB. Something along the lines of 1234567890ABCDEF.
The components… sometimes battery percentage just jumps down randomly, and the vibrator squeeks if not used for a while.
I too have a 4.4 tablet. It’s basically just for video and YouTube. I disabled all google services, mostly use apps from fdroid, with MiXplorer as an exception. You have to use cloudflare’s F-droid mirror because it still supports old protocols that official repo doesn’t.
MiXplorer to send and receive files with its HTTP server, Skytube for YouTube and Torrent client app for torrents.
It’s also behind an ad/malware blocking DNS, so there’s little safety. I don’t use the browser much but there’s a way to install Lets Encrypt root cert as a custom certificate for browsing sites that use Let’s Encrypt. I used use it for a while and websites will work but you’ll need to setup a lock screen and there’s a warning on every boot. So I removed it.
https://letsencrypt.org/certificates/
Steps: https://www.jucktion.com/lets-encrypt-android-4-4-mitigation
Set a dummy proxy server on the tablet and play dumb when it “breaks”.
New tablet time!