I officially hate iOS 11 now. Grr. Battery drain is unreal. I'm 1 hour into my work day and 26% of my battery is gone already, and I've barely touched the phone since waking up and unplugging it. Then I did the iOS 11 patch update last night. Yeah, if any thing, the battery drain is worse. And to top it all off, my phone has completely lost sound. Nothing makes a sound any more, including my alarm clock to get up for work. I just happened to wake up a couple minute before alarm, so I got up and went into the kitchen with phone in my pocket. When I noticed the time and the fact my alarm hasn't went off, I looked at my phone, and what do you know. My phone thinks the alarm is going off, but it's not. So I tried watching a video, nope, no sound. Tried watching a video on Facebook, nope, no sound. Tried playing a song from my library, nope, no sound. Good job Apple, you have ruined what was once a great phone. I'm highly disappointed with this new system. Yes, my sound is on, and yup, I've tried a hard reset. Nothing works.