When will iphone launch a larger sized screen phone?

At least around 5 inches in size? 4 inch is too small. For now i have LG nexus which has 4.7 inch. I actually first purchased iphone 5 online but without even starting it or using it, i felt screen size is small and returned it back to get refund.

Probably never

November the iphone plus will be released

Never

It won't