Software Update Iphone Issues. You can keep trying until your iPhone pulls the update or wait for a few hours and then try again. Connect the iPhone to a WiFi network.
Launch the Settings of your iPhone select General and tap Software Update. This is a common issue many users complained about. Learn how to update the software on your Mac and how to allow important background updates.
Learn how to update the software on your Apple TV.
As mentioned earlier an iPhone or iPad performs indexing and other background tasks shortly after a software update which could make it feel slower than usual. Connect the iPhone to a WiFi network. Failed upgrade jailbreak or hardware problem can lead to iPhone White Screen of Death. If it persists further try factory resetting your iPhone making sure you backup any data before.