Each model will come with different problems after using for a long time, today our topic is the black screen of the cube Tablet. First, you need to check whether it is out of battery power. You need to charge it for about 10 minutes to turn on it, if it still black, try to charge it with another charger to check whether it can charge. After charge it for a while, please press and hold its power button about 15 seconds to restart it, then check if it works. If all above does not work, please contact us without hesitation that the engineer will check for you soon. More detail information you can look at here: http://www.cube-tablet.com/buy-products.html

Alldocube X9