How to confirm volume button Fault on Joying 7 inch tablet android car stereo?
When you 7 inch full screen 2din android car stereo have volume buttons faulty, please go to factory settings, put the "hcttouch" click OK, then the screen will display
Then please take some picture to show the screen when you put the "hcttouch" click OK by email@example.com
We need to confirm the problem is software or other.
Any more questions please contact to firstname.lastname@example.org
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