In the world of smartphones, bigger is increasingly better. Samsung got in early with its Note range and got a fair amount of criticism for it. But, much to Samsung’s delight, Apple has recently followed suit with its iPhone 6 Plus. Both those phones pale into insignificance when compared to the Nabi Big Tab, however, which employed the services of a magician to show off its wares. PLUS: How big touch screens are being used in retail and marketing and what screens might look like in the future.