All photos deleted from iPhone and cloud after upgrading to 17.2.1

I recommend that you use another device to go to 👉 www.icloud.com and login with your Apple ID and Password. After that, choose the Photos section and see whether your Photos are still here. If they are there, then you will have confirmed that they exist on iCloud. If the photos are not there, then they have been deleted permanently from iCloud.

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More information here ▶️ Use 👉 www.icloud.com to restore and recover iCloud information

You can use iCloud.com on a computer to recover recently deleted files or restore an earlier version of information that was automatically archived in iCloud.

Review the following:

• Calendar: Restore your calendars and events on iCloud.com
• 👉Contacts: Restore contacts stored in iCloud on iCloud.com 👈
• iCloud Drive, Pages, Numbers, and Keynote: Recover deleted files on iCloud.com
• iCloud Photos: Delete and recover photos and videos on iCloud.com
• Mail: Delete email in Mail on iCloud.com
• Notes: Delete and recover notes on iCloud.com
• Reminders: Restore your reminders on iCloud.com
• Safari bookmarks and Reading List: Restore your Safari bookmarks and Reading List on iCloud.com

Axel F.

iOS updates generally aim to enhance user experience, boost security, and fix bugs rather than disrupt core features. Photos deleted issues after updates might stem from underlying, unmentioned factors. Updates won't typically alter personal data but may refine settings or features. Backup before major updates for safety. Review Apple's update details and backup advice for a smooth process.

This seems purely coincidental so please check the Setting on your device. Check which Apple ID you are logged in with. Sign in with your Apple ID - Apple Support

See what each update does: About iOS 17 Updates, About iOS 16 Updates, About iOS 15 Updates, About iOS 14 Updates, About iOS 13 Updates, About iOS 12 Updates, and so on...