I ended up bying a phone without a jack. I got 2 dongles that split into a jack and a charging port, so i can charge in bed while watching videos. One of the jacks has static noise and whine, the other has i think some kind of digital to analog interface that cuts the sound conpletely when the audio is too low.
So i hear static or when i watch a video or listen to an audiobook, when there is a pause in speech i hear the sound cut out completely, or if a video has soft background music on it, it might not pick up on it at all.
It’s very distracting.
And if you go online to buy a dongle, they dont really say what they have in them, or you dont know how your phone handles the conversion etc.
So I don’t think “just buy a dongle” is the solution. It works but now i have all these problems i didnt have with my old phone that had a jack…
I also did some searching again and came across the usb-c alternate modes. There is an alternate mode for “Audio Adapter Accessory Mode” and this needs certain architecture of the adapter you are connecting to be automatically detected.
From the spec: "The analog audio adapter shall identify itself by presenting a resistance to GND of ≤ Ra on both A5 (CC) and B5 (VCONN) of the USB Type-C plug. If pins A5 and B5 are shorted together, the effective resistance to GND shall be less than Ra/2.
A DFP that supports analog audio adapters shall detect the presence of an analog audio adapter by detecting a resistance to GND of less than Ra on both A5 (CC) and B5 (VCONN)."
So the host has to support it, and the adapter needs to be manufactured so that it turns this feature on.
But i find it difficult to find firstly if my phone supports it, and if the jack is designed with it in mind.
And after that we apply the complexity of also charging in this mode, and chespest possible manufacturing of these things, or they just throw their own DAC in the adapter and call it a day so from phones dac -> usb-c alternate audio mode -> adapters dac -> headphones.
And nowhere have i ever seen the manufacturer of these dongles say how its constructed.
But i will stop here and forget about this because it is way outta my league.
I also have absolutely no idea about if anything i say is correct so readers beware feel free to correct me on all thing usbc!