Did my iPhone 11 Pro update appropriately?

I decided to Update IOS did everything, it loaded, and then when the Apple Emblem appeared, and under it the Update Scale, it reached conditionally 10 Percent and the iPhone turned off. I turned it on again, it turned on, reached a little further and it turned off again. For the 3rd, 4th time, it reached half and wrote that the iPhone was updated. I don't know if it's possible that he's not completely updated? Because as I said, the scale was halfway. (iPhone 11 PRO)

[Re-Titled by Moderator]