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To put the Mega's 6.3-inch display in context it is pictured above with a BlackBerry Z10 sat atop of the screen. The BlackBerry's screen is 4.2 inches, while the total length of the Z10's chassis is just over 5.1 inches. The Mega really is a monster.
Oddly, and presumably as it would make it just too similar to the Note family, there is no stylus on the Mega 6.3.