Yes, you can use iTunes to restart your iPhone if you encounter the problem of your iPhone turning on, but getting stuck during startup. First, connect your iPhone to a computer. If you're using macOS Catalina or later, open Finder. If you're using Mojave or earlier, or a PC, open iTunes. Enter Recovery Mode on your iPhone. When you see the option to Update or Restore, select Update. Updating preserves your settings and content and may solve your startup problem. Contact Apple Support if you continue to have problems.