Looks like this one is the 10 inch model. I would be really careful in buying Coby products considering the company went out of business in June of 2013. There's no more customer service or warranty on products
It could be a faulty data cable or moisture- usually flickers are a result of inconsistent flows of power to the display.. this could have happened id the product fell or was hit or in some cases gathered moisture.
You should use a usb hub so that you can use a usb wireless keyboard/mouse and multiple usb connected devices. Also note that the Coby Electronic Corp went defunct this past summer. So please don't expect any kind service or technical support. There is no blue tooth support for this device unless otherwise noted in device manual.
In my oppinion I couldn't get it to work with our verizon network. I don't think so. But you could always buy it give it a try and if it works than lucky you. But if it doesn't work with T mobile you can always return it for a refund. Good luck
No, unfortunately I have no idea how to fix this. You can search Google for some sites that may have the original Android system that was installed when you bought it. I wish you lots of luck in getting it working again.