Wow! It looks like the Windows Phone platform is taking off to great heights, and with the release and rumors of sooo many new devices I thought I'd ask: what is your ideal screen size? (This doesn't have to be your current screen size.)
3.7 inch
Did you mean 4.7"? Its ok if you didn't I'm just asking to make sure.
Not a chance. I started with the HTC Trophy which was 3.8 inch screen and always thought I wanted larger so I got the HTC 8x and completely miss the smaller screen. 3.7/3.8 inch I really miss and would love that size. If 16:9 I would jump to 4 inch but no more than that.
The size you can read well.
I think 4.5" is the sweet spot for everyone. Also, the aspect ratio is important.
Having the 16:9 HTC 8X I can say that I love the AR of its screen. It makes the phone taller for narrower than many others. In smallers sizes than 4.5" it oculd be seen as too narrow, much like the iPhone 5, which IMHO looks too much like narrow.
I have big hands and I can handle a 5" device single-handed with some comfort, but I prefer 4.5" as it would fit almost everyone.