Thankfully, yes. The answer isn't clearly spelled out anywhere, but is relatively simple. Unfortunately, if you're not ready to update, stopping iOS from constantly asking you to install the update means removing it from your phone. But don't worry, when you are ready, the download is usually fairly quick and painless. To stop the nagging requests to install the update, do the following. Go into the Settings app. Go to General > Storage & iCloud Usage Go to Manage Storage (under "Storage" not "iCloud") Select the downloaded iOS update (i.e. iOS 9.2) in the list Select Delete Update