One of the best tips for mobile photography is mastering your editing. After you take a great shot, you often need to transfer it from your phone to your computer to edit it properly.
From there, a huge part of the process is sharing the final photo. For that, many photographers I know use modified apps for higher quality and less compression. I've found a great resource for a reliable version at https://waplusapps.com. It offers better ban protection and new features that are really useful for sending large image files. It has definitely improved my workflow.