How to backup iPhone to computer without iTunes on Windows 11?

After reading your post content I think this software may be suitable for you he on the most powerful features of the 3uTools, you can easy to backup iPhone to computer on a Windows 11/10 PC. Mac users can not be used. In addition, the wireless backup is not supported. 

Step 1. Connect your iPhone to the computer with the data cable. iPhone screen will pop up Click on 'Trust this computer' and then enter the iPhone unlock code. 

Step 2: The software will automatically recognize your iPhone and device information will appear. At the top of the software click on 'Toolbox' and select 'Backup/Recovery'.

Step 3: I need to explain that full backup is to backup the whole iPhone including photos, contacts, apps data
Of course, custom backup means you can back up whatever you want, such as photos or text messages.

Step 4: Before you start backing up iPhone to computer without iTunes, you need to choose the location of the files on disc C by default, which can be changed to disc D.

Step 5: Click 'Start Backup' and wait for about 10 to 30 minutes to complete the backup successfully.

If you want to restore the previous backup of your iPhone, open the software ‘Toolbox’ → 'Backup/Restore'. Select the previous backup file and click 'Restore'. Wait for iPhone to recover data and restart automatically after recovery is complete.