I keep getting a error message failed to update. Why it not download
I can’t update my phone keep getting the error message failed to download
iPhone 7 Plus, iOS 12
Question marked as
Are you attempting to update over the air? If so, see this for troubleshooting, Get help with over-the-air iOS updates - Apple Support
If that does not help, then update with iTunes, Update your iPhone, iPad, or iPod touch - Apple Support