If you own an iPhone 10, there are a few steps you can take to uninstall iOS 10. First, open the Settings app and select the General tab. Scroll down and select the Uninstall Software option. Next, enter the Apple ID and password for your iPhone 10 into the Uninstall Software dialog and click on OK. Finally, restart your iPhone 10. If all goes well, iOS 10 will be uninstalled and you will be able to use your iPhone 10 as usual.