After a few hours of use, the tablet has demonstrated gaps in the touchpad. She became "mad". Keys were busy by themselves (opening the dropdown menu), some did not meet and others were busy when I pressed their neighbor. I had to recalibrate the tablet twice in 48 hours and it started again. Finally, I completely reset the tablet and the fault has almost disappeared. However, a pixel has started to become deficient. I asked for the replacement of this tablet.