I got my iPhone 6s on launch day but my phone would sporadically refuse to wake from sleep. My Apple Watch would show that it is still connected to the phone, but it would fail to load any watch apps, and Siri wouldn't work. I have to press and hold the home button and the sleep/wake button to reboot the phone. This has happened to me four times since I got the phone. iOS 9.0.1 and 9.0.2 did not fix this issue for me so I'm now thinking it's a hardware issue. Is anyone of you is experiencing the same problem? I still have to investigate a little further so any input is appreciated.