Deleting photos from my phone, are they saved in iCloud?

No, iCloud is a syncing service, not separate storage. If you delete the photos on your phone, they will be deleted from the iCloud as well and also any other Apple devices you are synced to iCloud with.

FalishaB42 Said:

"Deleting photos from my phone, are they saved in iCloud?: I am out of storage on my phone and uploaded photos to iCloud Photos. Is it safe to delete the photos off of my phone? Thank you in advance!!"

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No. So, what to do...

Clear Internal Space:

Caches may have intensely uploaded. So, clear them.

Troubleshooting iPhone Storage:

Internal storage cannot be upgraded. It is what it is. So, the maximum internal storage capacity never increases, even if you upgraded your iCloud plan. Learn More here: What's the Difference Between Device Storage and iCloud Storage? Apple Support

So, what to do...

Clear Space Using my User Tips:

• How to Clear Space from your Mobile Device, and What to Clear: - User Tip
• How to Clear "Other" in your iPhone's Storage - Use Backup - User Tip