I have a Nexus 4 on T mobile and after updating 4.3 to build JRWR66Y the app Google Wallet suddenly stopped communicating with store checkout terminals. The app appears to function properly, but at checkout nothing happens (no NFC communication) at the terminal and I was forced to use an actual credit card to finish my transaction. I tried this at 2 different stores and on several different terminals, so it's not likely the particular terminal I was at. I am not sure if the problem is wallet of NFC. Any ideas?