I am having a lot of trouble with this phone(I have a D1). Well I was downloading the Reckless Racing App and it was downloading to sd card, it was about 90% done. It wasn't fully downloading so I went to the home screen. I turned the phone off and back on and the "M" logo was to the left side of the screen, it stays there and turns off. I do have my phone rooted but I wasn't messing with any of that stuff when this happened. Just a simple reboot from a app problem.