I have an Onda tablet running Android 4.2.2 Jelly Bean. I set up a WiFi hotspot on my phone and connect the tablet to it. After anywhere from a minute to 20 minutes or so the tablet crashes. Not the browser, the operating system itself. The logo comes up like it is rebooting but it's stuck. I have to hold the power button down to reboot. This happens whether I'm running a browser or not. I've tried a bunch of browsers. I also end the processes of other apps running. And I usually have at least am half of gig of memory so it's not a memory issue. It seems to me that something in the WiFi is triggering something in the tablet to crash. I have tried different networks. Also, I have two Onda tablets that do the same thing. When they are both connected, they crash at the same time. Does anyone have any idea what is causing this?