Review on Bluedio T2s Bluetooth Headphones: 57mm Driver Foldable Wireless Headset with Mic - 40 Hours Play Time (Blue) by Stanisaw Pirkowski ᠌

I ordered these headphones for 1300r. During testing on the first day, everything worked. On the second day, only the A2DP profile (stereo headphones) works. Doesn't want to work with HSP/HFP profile. I tried it on Linux, Windows, on the Xiaomi Redmi note 4 smartphone it also connects only stereo headphones, and if you force A2DP off, it turns on on the phone and the connection is immediately disconnected. On a computer in different OS about the same. Tried USB whistles both BT 4.0 and BT 2.0. Doesn't match anyway. Wrote them about the problem on the forum at their bluedio[dot]com/en/forum/99 . So far they haven't answered anything. There are also a lot of complaints about this problem on w3bsit3-dns. Com.