Comment by ingenium
6 hours ago
Android is pretty easy, you just add it to the keystore and that's it. I've had my own CA long before Let's Encrypt, but now mostly only use it for non-public devices that can't easily use Let's Encrypt (printers, switches, etc).
You can add it to your user CA store, but no app will trust it since it's treated differently from the system CA store, which you can't modify without root or building your own ROM. In effect it is out of reach for most normal users, as well as people using security focused ROMs like Graphene, when ironically it can improve security in transit in many cases.
I mean it works fine for me on Chrome