hello
from the support they told me that I have to send it back to the seller, in China .. I can't be without a cell phone for who knows how long because I need it for work, also the cell phone in question I have been using it for about a month .. I hope over time that find a less invasive solution ..
I have to settle for now to have a bv9900 despite having bought a bv9900pro .. this is not at all professional..thanks