Nexus 4 Battery Replacement
I successfully replaced my speaker without removing the battery. Better save users some time by deleting steps 4 and 5 from this tutorial. Thanks a lot by the way :)
Nexus 4 Back Cover Replacement
Seriously, you can use your nails to get a better grip and feel the snap before you break anything. My plastic opening tool didn't work as expected and left pieces of plastic inside the case.