>> “For myself at least, 4 inches is about how big a phone should be.” <<
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I use my phone for talking on, not looking at pictures. I don’t even know where I’d hide that 4” brick, my shirt pocket is only 3 1/4” wide. My flip phone is 1.9” wide, and 4.3” long, and has real keys so I can punch in the rght number the first time, every time.
I personally don’t like the onscreen keyboard. I like to feel my keys. I think feeling my keys helps me type more efficiently, because I sort of know where everything is by feel.
You need bigger pockets. :)