When trying to view the map I have shared on my mobile , all I get is a blanked out white screen, do you know why this could be?
Please email me your map link, so I can take a look. firstname.lastname@example.org
Also, let me know what email app you are using on your iPhone. Is it the iPhone email app or something else? Are you using the same email address to save your maps as the one that is on your iPhone?