I just replaced my LCD and digitizer on my Nexus 4 after i dropped it and the screen cracked. It was still in working condition after the damage, but the touch screen was unresponsive. The installation went pretty smoothly but when I went to boot it up after it gets stuck at the bootup screen with the 4 bubbles. I tried some of the solutions people found for a similar problem a few months back when Google released Kit Kat 4.4 for the Nexus 4 but none of them have worked for me. There doesn't seem to be any hardware functionality issues, just some software glitch that I can't figure out. Any input would be greatly appreciated.