I have an S21 Ultra which I upgraded to from an S8. Whilst massively disappointed in Samsungs decision to remove the universally simple and reliable 3.5mm jack I have an issue making calls using wired USB-C earphones. These are Samsung AKG earphones and when I connect them to the phone, I can play audio just fine but if I make a call, the sound quality drops and the other party can barely hear me speaking.
To eliminate that the earphones are faulty, I tried my old 3.5mm earphones via a USB-C dongle and get exactly the same result. Plain audio is fine, calls are terrible.
I regularly used to make calls hands free whilst cooking or gaming and it's a PITA to have to actually hold a phone to me ear when legacy models enjoyed freedom for years.
S21, camera and huge screen aside, is a bit of a backwards step in technology from my experience so far.
Why would you say that @GoanGeek ? Generally speaking, pack in devices like 'free' earphones are average quality.
The question isn't to debate the merits of bluetooth over wired. It is a functionality question - essentially, has Samsung restricted the access to the USB-C audio to preferred devices only to drive users onto a specific product.
I have had truly wireless earphones (Jabra Elite 75) but frankly the audio quality and amount of signal drops resulted in me returning them. Convenient, yes but too many compromises. Also, the inability to replace batteries in earbuds is not environmentally sound and drives a disposable culture I choose to avoid. Remember, when purchasing wireless earbuds, a good percentage of the cost is going on batteries. I'd rather spend all my money on audio quality in earphones. FWIW I use a set of 3.5mm wire in-ear monitors for music listening and bought cheap Samsung AKG USB-C's specifically to make hands free calls.
If anyone has a genuine contribution to make to the question I'd love to hear it.
Ifory are affordable ($13.00 - $16.00), excellent sound quality, noise-cancelling, and Amazon. I'm interested in the wireless ones, although I do appreciate my Galaxy Buds. However; I really like wired-in headphones with phone speaker. If you listen to music as much as I do, you may need to replace them about 3-4 months, sometimes longer...but you can, there's deals for Prime users.