I almost cringe when I see UX people with iPhones. Yes, it's esthetically pleasing, but please don't take too much inspiration from the way things work.
On the other side, I asked another friend of mine to take a picture with my Android phone a couple of weeks ago and she (an iPhone user) wasn't able to find the camera app. I had to open it for her. It was on the home screen, maybe it's different on the iPhone.
I would assume that it’s similar on android, access the camera from lock screen or app. I’d probably try the iPhone style swipe the lock screen if I didn’t see a shutter or camera looking icon, otherwise I’d use search (if I could find that) to find the app.
The best design for someone who is unfamiliar and the best design for the user that already knows how it works are always at odds with one another. Do you balance the game for new players or for diamond league?