Does anyone have recommendations for a device that can connect to 3G/4G as well as a Wi-Fi network? I'm thinking of something that works just like your cell phone in that it accesses the cellular network but whenever there is an open Wi-Fi available it switches over (automatically or manually). Ideally it would also have a way to connect an analog phone to dial up over the cell network as well. Something like the Yachtspot http://www.inventicamarine.co.uk/wifi-technical