2017 Fusion Titanium Energi MyFordMobile stopped updating after new Samsung Galaxy S7 Android phone system update about on 1 November 2017. Did some online research and arrived at the solution that indicates pulling (it's a triple-legged fuse) should restore MyFordMobile to it's advertised capability. This solution was verified by my local Ford dealer. So,if you take a small flashlight and stand on your head under the steering wheel, you needn't pull the fairly-large trim piece immediately under the steering column and risk breaking it. While taking appropriate steps to avoid dropping the flashlight on your nose, contort and abuse your hand into position to pull Fuse 10/11 and keep it out for three to five minutes. Then reinsert. It's now been two days with no recurring problem; I grow more optimistic each day that the problem is now solved.
Incidentally, the fuse box diagram is on page 249 of the 2017 Ford Fusion Energi Owner's Manual. The function of the fuse is listed as "Keypad. Cell phone passport module." on page 250. Darned if I know what that means but it apparently allows a hard reset of the system, not unlike shutting off and restarting a Windows Operating Systems every time it loses some necessary functionality.
If you have a C-MAX Energi with the same problem with MyFordMobile not updating, the solution appears to be to pull and reinsert Fuse 67.