Does anyone know how to totally shut down this notification. So far I have tried for a couple of times: 1. go to Settings->General->Storage & iCloud Usage->Manage Storage and delete the update file from Settings App but update would be downloaded automatically a fews days later prompting me again; 2. Tap 'Install Now' in Software Update and disagree the Terms and Conditions only to find the prompt would come back a few days later. I understand Apple have to use this method to keep as many people on the latest iOS as possible. But I am so not impressed by qualities of iOS and its updates lately and changed from updating ASAP mode to updating-only-when-necessary (e.g. affecting by a noticeable bug and knowing the update would kill it) mode. If you happen to be a person taking a different attitude towards installing iOS update, please ignore this post and I absolutely understand that you may have a thousand reasons persuading me to update and the how I would benefit from it.