yes, I think, unzip intercom folder and push it to /system/app
folders - 0755
.apk & .*dex - 0644
And I just noticed libs (.so) in /lib/arm64 are not actual files but links (see pics)
so if you don't have these libs in /system/lib64 I attached them.
You can create links or just put lib files in /system/app/lib/arm64
is there antenna socket in Armor 3 ? It's kinda not safe (for radio chip) to turn radio on w/o antenna connected. though, I did it several times accidently (have that ptt button remapped now)
I always forgot - it's android 8.1 and chances to install something in /system are low I tried to push "miravision" from new ROM, but that folder just disappeared after reboot if installed in /app and after I pushed it to /priv-app I had to restore /system
Any chance you an extract the intercom apk with APK Extractor or something similar?