4-inch iPhone 5 Retina Display Screen?

Recent rumors suggest that the 5th generation iPhone will feature a 4-inch Retina Display screen. According to Apple's component suppliers:

The component suppliers noted that the production lines for Apple's next generation iPhone have begun testing, and Apple is interesting in expanding the screen size to 4-inches to support the tablet PC market as the vendor only has a 9.7-inch iPad in the market.

It's believed that this increase in screen realestate from the previous iPhone measuring at 3.5-inches, is due to the up-and-coming competition of various Android devices. Recently released Android devices are boasting much larger '4 to 7-inch' screen's. It can be assumed that Apple may be testing a beta iPhone 5 with this reported screen size, but will this beta see the light of day? In this video, I provide my opinion on the rumored iPhone 5 4-inch screen, feel free to give input on your opinion as well. 

 Source: Digitimes