How can I recover photos deleted from my I phone 6s plus
Welcome to iMore! Did you delete them from "recently deleted"? If so, they are gone. It's possible they may still be in an iCloud back up. Check iCloud.com on your computer and see if they're there. If so, you can restore the phone with the iCloud back up and retrieve the photos. If they're not in iCloud, they're gone.
If they're still in "recently deleted", tap "select" in the upper right corner. Then mark those you want. Then tap "recover" in the bottom right.