(Posting this here rather than !askandroid@lemdro.id as it’s a quite general question)
I had a look at the GSM Arena phone finder, and it the choice is getting smaller and smaller every year (only 43 phones from 2023, reviewed by the site, had a jack)
The remaining ones are mostly
- Xiaomi Redmi
- Zenfones
- Sony
- Samsung entry range
So, has everyone switched to Bluetooth / USB-C dongles, or are there still a few people holding to the jack until the very end?
All the other points are fair but I’d guess you’re using more power to encode and transmit bluetoorh than to power a headphone jack. It’s like 50mw at full volume out of the jack and a small fraction of that at, say, 25% volume.