Most of the time, you can restore your iPhone and get it back to normal from different iPhone errors, including iPhone stuck in boot loop issue. However, please be aware that putting iPhone into recovery mode to fix your iPhone will erase all data from your device. So it is recommended to backup all important files on your iOS device before the process.
Step 1. First of all, please don't connect your iPhone to the USB cord for now, but make the other side of USB connected to your computer.
Step 2. Run iTunes on your computer. And please be sure you have installed the latest iTunes on your computer. If not, go to Help > Check for Updates on iTunes to get a latest version of iTunes.
Step 3. Then turn off the iPhone by pressing and holding the Home and Power button on your iPhone.
Step 4. Next, please connect your iPhone to computer with the other side of USB cable after your iPhone has been turned off. Then continue to hold the Home button, and let go of it when a "Connect to iTunes" screen appears on your iPhone.
Step 5. Thus your iPhone has been in the recovery mode successfully. And you will receive a notification from iTunes, asking you to restore or update your iPhone. Just click Restore option to fix iPhone stuck in boot loop issue.