In fairness, some of these limitations are due to using devices/cameras primarily meant for one thing to do another. Regardless of all the cool things they can

In fairness, some of these limitations are due to using devices/cameras primarily meant for one thing to do another. Regardless of all the cool things they can do, smartphones were not built to handle all of the live capture and transcoding that you can do easily with a suitable camera + desktop/laptop. I haven't used my phone's cam/mic for recording or streaming very much, but I know you can get phone video and audio into OBS via obs.ninja if both phone and computer are on the same LAN. You might be able to use your camera's video and your phone's mic audio as OBS inputs, then send the output of OBS into whatever recording or streaming application you need. Or just get a dedicated mic. I haven't kept up with the market for a while but we used to always just get those Zoom (no relation) mics and hook them up to the audio-in on our DSLRs for cheap(ish) decent audio. I'm sure there are better options nowadays.