I'm hoping someone can help. I've got an iPad 3g, which has a microsim from Vodafone here in the UK. Vodafone set it up and it was working fine for a few weeks. One day the 4g simply stopped working - I get full bars and vodafoneUK next to them but no 3g (or edge or any other kind of data via the sim). WiFi is OFF, so it's not that. I re-set the iPad hoping that would work and did a fresh re-install, but still no 3g. This has been going on for a couple weeks now and is just plain weird. Has anyone else had this problem? I hate paying for a data plan that's useless.