I just died after a month of use, does not respond to button presses and charging, I read other reviews, they say the battery is dying. Repair in the service is not advisable, I decided to open it myself, so after disconnecting the battery, it has a charge of about 3.5v. After careful study, it turned out that the C2 conduit was broken on the board with the buttons and it was in a short circuit, it turns out that the battery went into defense, charging, respectively, also did not go, how to checSee full review