The Galaxy Mega will come in two flavours, with either 5.8 inch or 6.3 inch displays on offer, pushing well above the 5.5 inch screen of the current Galaxy Note 2.
The 5.8 inch Galaxy Mega will be equipped with a dual SIM design that lets you pop in two cards at once. Its big screen will only have a 960×540 resolution, so it will not match the Galaxy S4 or Galaxy Note 2 for pixel density, even if it is much larger.
The 6.3 inch Galaxy Mega is going to have a dual core processor and an eight megapixel camera. Information on the display resolution for this handset remains elusive, but if it follows in the footsteps of the 5.8 inch iteration, then it might be a little bit less impressive than other big screen phones.
Whether or not you can actually describe these models as mobile is a different matter, because actually putting such big devices in your pocket will definitely prove difficult.