I'm facing a very strange issue on my S21 for the last week or so. Until then, bluetooth working perfectly with all my devices, however, last week I started to notice a very noisy distorsion when using my bluetooth headphones in a call, both trough Teams or a phone call.
I thought it was a headphones' problem, but I tryed with 4 different bluetooth devices (headphones, Jabra speakers and car BT) and I'm still getting this extremely distorted sound that makes impossible to use them for a call.
Bluetooth works for audio, although I had to disable A2DP hardware offload since some devices stopped working also for playing BT music.
I've restarted the phone, repaired the BT and I even performed a factory reset with no luck