Seems like a lot of folks who have the 12.9" iPad Pro also have the iPhone 6+. I got my 12.9" Pro a few months ago, but still using an iPhone 4S currently. I do quite a bit of gaming, and I've found that the 12.9" Pro is just a bit too big for many games and also is heavy to hold. Because of this I've considered getting an iPad Mini to do gaming, but also considering that maybe the best idea is to upgrade to the 5.5" iPhone and then that should be great for gaming.
I'm going to wait until the fall and see what the iPhone 7 brings. I'm kind of hoping that the iPhone 7 retains the big screen size but somehow cuts down on the bezels just a bit. I like to carry my iPhone in my front pants pocket, and the iPhone 6+ is a bit tight and would not fit in some of my pants pockets. I'm hoping for a slightly smaller size overall, but with the same screen size.
I'm going to wait until the fall and see what the iPhone 7 brings. I'm kind of hoping that the iPhone 7 retains the big screen size but somehow cuts down on the bezels just a bit. I like to carry my iPhone in my front pants pocket, and the iPhone 6+ is a bit tight and would not fit in some of my pants pockets. I'm hoping for a slightly smaller size overall, but with the same screen size.