Stuck update requested on iphone6 ios12.2

Greetings, andriyan288!

Thanks for reaching out to the Apple Support Communities! It sounds like you are having an issue updating your iPhone and I'm happy to help! Check out this article with steps to follow to Get help with over-the-air iOS updates. This article will provide you the best steps to take to troubleshoot issues with updating your device, along with the next steps to take if you continue to have issues updating.

Have a great day!