I don't know how this so called"Parallax" feature (which makes the home screen move against background when the phone is titled in different directions) helps other iPhone users. For me it only serve the purpose of using more battery cause it has to continuously collect data from gravity and gyro sensors thus keeping these sensor on all the time. Even with the "perspective zoom" set to off, the parallax effect still exists, which annoys me a lot. I think it's almost unnoticeable for many iPhone users given "perspective zoom" set to off. If that's true what's the purpose of having this unnoticeable effect??? Yes, I know I can't turn on "reduce motion" in settings. But I need the animation as it makes the UI more intuitive and informative especially during app switching process.