Starting with iOS 11 and continue on iOS 12 Apple switched the default camera formats for photos. These pictures are HECI and are not presently compatible with many third party applications including Google Docs.
In order to use photos from an iOS device you will need to switch the format it saves.
Set iPhone Camera to Saving Photos as JPEG
- Open the “Settings” panel and then tap on “Camera”;
- Look down and tap on the “Formats” option;
- The only thing left to do is to check the “Most Compatible” option instead of “High Efficiency”.