Starting a couple of days ago my Blade V8 Pro started to stay on the Blade V8 start screen for prolonged period of time. When my phone does finally complete the bootup process, the following message appears on the screen after about 2 minutes "Unfortunately Stock Android has stopped". At this point the functionality of the phone becomes unstable. I have done 3 or 4 factory resets and cleared the cache partition put the problem persists. Does anyone know how I can fix this problem that I have described?