The Google Nexus 7 built by Asus doesn't support cellular network. And that is where the Asus FonePad comes in. This 7-inch tablet has got an 800x1216p display powered by an Intel Atom Z2420 1.2GHz processor. It supports a microSIM for cellular data as well as calls. However, holding a 7-inch tablet next to your face to take calls looks a bit odd. So you can pair it with a Bluetooth headset and enjoy two worlds (smartphone and tablet) on one device.