Another anecdata: Last night, I finally succumbed to iOS11 (the only reason I did was that I wanted to enroll in Heart Study, for which your iphone device has

Another anecdata: Last night, I finally succumbed to iOS11 (the only reason I did was that I wanted to enroll in Heart Study, for which your iphone device has to be iOS11). Indeed I had been pushing it away because I usually associate the word "upgrade" to device death when it comes to mobile devices. But wow... it did not screw my 6S up. In fact, I think it's faster and 'zippier' with this iOS11 upgrade.