Currently when I place a property list file (plist extension) to a S3 bucket, it sets the Content-type to application/octet-stream for some reason. It causes issues when I download it in Objective-C (iOS).
How can change the bucket policy so it automatically sets the Content-type to text/plain
You cannot. The default content-type is “application/octet-stream”.
Please find below the aws documentation for the same
The only option you have is setting the content-type at the time of upload or updating it once the upload is complete.