Hello,
I’ve been using my refurbished S9 for several months. Everything works fine, ecxept for the phone calls. I don’t make calls very often, but when I do, my partner very often hears a very disturbing echo, and sometimes the sound goes on, off, on, off…
I’ve bought the device from Murena shop and I apply the OTAs as soon as they are available. From the same place and with the same carrier, but with an other phone (stock Android), the calls go fine.
Any idea about what could go wrong ?