You have 2 options to get pics visible in a post.
1. You can upload them to any photosharing site and use the
button to insert your link
2. Use the advanced post editor by clicking the "Go Advanced" button. Once the advanced editor is loaded, you can click the manage attachments button, in the new tab, select your photo and upload, then close the tab when you're done. It's a bit clumsy on a phone but does work.