I really wish people would stop trying to sell the idea that a phone and handheld with controls would be popular. The ergonomics and battery life are just not there. Also, the want is not there. People are happy with iOS/Android and are not going to buy a shittier smartphone to play games.
This. There is a reason why those ios/android controllers will never be mainstream and its not the price.
People who play games on there phone are quite content with touch controls and if they want pad + buttons they own a 3DS or Vita.
Releasing some sort of Vita which is a phone isnt going to see people stop buying iphones.