1) yes, but only got the warning once. 2) I think you need to root and disable OTA updates, but never tried. 3) Hate it, but I think it's a drop in an ocean of

1) yes, but only got the warning once. 2) I think you need to root and disable OTA updates, but never tried. 3) Hate it, but I think it's a drop in an ocean of control, and probably way more harmless than depending on Google for everything (at least in my case). Not an Apple user, but apparently this is also a thing on Apple devices: https://www.vox.com/2015/2/12/11558938/what-is-this-carrier-settings-update-on-my-iphone-ipad https://www.vox.com/2015/2/12/11558938/what-is-this-carrier-...