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iPhone 5.

10.1 seems to be doing fine. Animations are smoother, and memory management/footprint appears to be improved. I'm not seeing as many app reloads as I did on 10.0.2.
 
I'm using it on my iPad Pro and after several hours all is well. I think Safari scrolling may be smoother, but that could be my imagination. Holding off on my 7 Plus for a day or two.
 
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