An update on trying #WhatsApp with #Anbox:
https://nitter.net/linmobblog/status/1298869025112457216
Summary: Texting works, the rest is flaky, #Virtboard is the way to go as that invisible-android-keyboard trick does not really play well with texting. Also, it's tough to get the typing started.

I think that right now spending time on a WhatsApp Web wrapper and using different hardware to run the app at home is the better way to move forward with regard to WhatsApp.

The #anbox keyboard issue in #Phosh can be fixed by replacing #Squeekboard with #virtboard, as described here https://source.puri.sm/Librem5/squeekboard/-/issues/218
See https://nitter.net/linmobblog/status/1294717195566682114#m