iOS 14 support
Latest version
Question marked as
Go to Settings > General > About
What does it say for iPhone Model?
You need an iPhone 6s/6s Plus or newer in order to run iOS 14
If you have an iPhone 6, iOS 12 is the end of the line. Currently 12.5.1
Update your iPhone, iPad, or iPod touch - Apple Support
issues?
Updating iOS: common issues and solutions - Apple Community
video..