You could try to prompt those users to install lineage os. Thats an open source android version that can be installed on a lot of phones that can run android. There are some 9+ jear old devices that currently still get support
Summit
Community to discuss Summit, an open-source Lemmy reader for Android.
App (Play Store): https://play.google.com/store/apps/details?id=com.idunnololz.summit
APK: https://github.com/idunnololz/summit-for-lemmy/releases
Source: https://github.com/idunnololz/summit
Support the app
Website: https://summit.idunnololz.com/
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Summit is backwards compatible by 11 versions.
Mlem is backwards compatible by 1 version.
It's more common on iOS for apps to not be backwards compatible since devices get OS updates more frequently since Apple controls everything.
The problem on Android is you can buy a phone, get 1 major update and then be stuck on that version forever.
Whoopsies. I misread and I only need to drop support for Android 5. Android 6 will still be supported... For now.