Anyone else notice any scuff marks on the back of their Nexus 5? It was only after a day of gentle use that I surprisingly noticed two small scuff marks on the bottom right corner of the back of my white Nexus 5, after carefully looking at my back under bright light. I'm extremely positive that I never touched it with any sharp surface, and I don't think the back is that vulnerable to be honest... If you guys can carefully look at the backs of your Nexus's let me know if you see anything. I'm starting to think it's a factory defect, as I've read about the exact same problem with someone else (but they had it on the top). Should I do something about this?