Flickr is another cloud service where you can backup photos right from your iPhone. Flickr offers 1TB of free space, so it is the best cloud storage service for the price around. Here's how you can backup iphone photos to Flickr
1. Download Flickr app.
2. Login to your Flickr account
3. Tap the camera icon at the bottom center of the screen
4. Select the images you want to upload. You can select multiple photos for simultaneous uploading
5.Add a group name, description, and location, then tap the upload button and they will be added to your Flickr Photostream.