I still have my original headphones that came with my S20ultra and bought them as a spare pair to keep on my desk. They worked decent enough at first, sound quality wasn't as good as the original, but with my S20ultra they worked well enough for voice calls. During the day while using these headphones, my phone disconnected from the headphones and started making phone calls. Within a day they stopped working and my phone doesn't even realize they're connected. The comparison with the supplied original headphones clearly shows that these are cheap fakes. Its wire is much thinner and they are not as long. As mentioned above, the sound quality was not that good. They had problems with a Samsung phone and ended up not working (within a day!).
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