I was at an event last night and out of the blue, while not using it, my ZTE N9100 went to a screen that says the word Android. Now I can't get out of this screen to do anything. I've drained the battery and recharged, taken battery out and placed back in, and rebooted. I hope to avoid a factory reset as it would delete a lot and also not even sure if it would work. The phone doesn't seem lifeless (there's a light design that goes through the word android as it's on the screen) Anyone run into a problem like this and know what the problem might be? Thank you.