FWIW, I have a Nexus 4 and saw basically the same symptoms with two different models of Qi chargers. The same chargers worked perfectly with other people's phon

FWIW, I have a Nexus 4 and saw basically the same symptoms with two different models of Qi chargers. The same chargers worked perfectly with other people's phones. My guess is that either there's a serious design flaw in the Nexus 4's inductive charging, or it just has a very high defect rate.