Hi everyone 
I am attaching images from the iPhone, but can not upload to the server, because when you save the post no longer appears to me that image.
I’ve tried in safari and chrome.
thks !!!
Please report that issue here: https://github.com/getgrav/grav-plugin-admin/issues
Done:
https://github.com/getgrav/grav-plugin-admin/issues/791
thks rhukster