When I switch from WI-FI in the settings to "Off", it's usually suppose to say "3G" at the top left side of the screen near the name of my carrier, Rogers. But it's not doing that anymore. The 3G network has always worked for me, but why not now? Is it down? If so, for how long? As well, none of the people I text are receiving my messages, as well, I'm not receiving theirs, why?