human
How do I back up my iPhone with a broken screen?
assistant
Back Up an iPhone with a Broken Screen
1. Unlock your iPhone.
2. Tell Siri to enable VoiceOver.
3. Connect an external keyboard to your iPhone.
4. Tell Siri to open "iCloud Settings."  
5. Press the right arrow key on your keyboard to navigate to iCloud Backup.
6. Press Ctrl + Alt + Space (Windows) or Ctrl + Option + Space (Mac).
7. Find and select Back Up Now.