Is that common? I have and use a 5s for years now and I have a spontanious reboot every 6 months maybe. And I am a very active user. Same for my wife (same phone). I have a new Samsung as well; it gets stuck every 2 days enough to have to reboot it.
It hasn't been that common since the latest updates but particularly early iOS9 was very frustrating.
I see it most commonly when using Safari or AirPlaying anything, but have also had it happen randomly when using Settings, presumably because Springboard.app has died.
Is that common? I have and use a 5s for years now and I have a spontanious reboot every 6 months maybe. And I am a very active user. Same for my wife (same phone). I have a new Samsung as well; it gets stuck every 2 days enough to have to reboot it.