Have you tried updating your iPhone from iOS 14.5 to 14.5.1? Typically an easy process via software update, though for some like myself today it looked like the video shown below:
Unlike normal updates, information didn’t present and the interface was stretched. I’d I clicked the Learn more link Software update would crash. The Download and install link wasn’t working either. I tried a force restart and resetting network settings, neither had an effect on this.
Eventually, I tried holding my finger over the Download and install link which presented options, I chose Download only which commenced download, though no progress bar was shown until it began the process of preparing the download for install.
Too then get it to install I had to quit software update, rotate my screen, then go in to software update once more before the install link would allow me to click it. In portrait mode the link wasn’t clickable, yet in landscape it was; whomever developed and tested did a terrible job.