I have Google Voice installed on my Nexus 4 and Nexus 7. Usually, if I get a text message, the Nexus 7 gets it first. But the last few days, the Nexus 4 doesn't get them at all (unless I open the app and refresh) but the Nexus 7 does (both are on the same Wifi). Does anyone know what's causing this and how to fix it? Anyone else experiencing this issue?