For me its the ‘Knock Code’ that LG had on their phones (I really wish LG still made at least the V series phones)
Basically there was a four-square area and you set up a sequence of where you would tap to unlock the phone. That set of squares was only shown when you set up the code
Then, to unlock your phone, you would tap those areas in the sequence you set up (even with the screen off).
Fingerprint readers are nice, but I really do miss the knock code
Edit: did find this article with a way to do the knock code, but if done wrong, could brick your phone I guess.
Plus, article is from 2014. When I looked at XDA’s info on it (they also being the developers) it looks like development on it is over, but individual modules may or may not still be supported by their devs
Why? Use adapters; there are some that you can use to charge and use at the same time. Look for a phone with 2 USB-C ports, or use Bluetooth like a normal person.
A 3.5mm Jack is not that much of a pain to put into a phone and having to have dongles on you at all times is just dumb. I’m a pixel 3 user and I loathe that I have to scramble around the house trying to find where my other half or I have left one of two dongles around just so I can listen to music outside of the house.
Leave it connected to your headphones
If these phones had 2 usb c ports then you could leave one on it always