, There is a loss or try to change the volume button is the first step that should be the key to further levels. Button is not a problem, try the next step.
If there is a way to break the jumper as shown in the picture below the volume button on the second step is to examine the way, then, is there a way to break, or.
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Samsung I8190 volume button is not working the way, jumper, jumper solution volume button down button.