WIFE HAVING PROBLEMS WITH HER iPHONE 7 (husband has Samsung Galaxy S7 FROM WORK)

SKYPE: built-into Samsung; iPhone uses FACETIME: cant login to Skype; cant find husband as a contact.  
- SOLUTION: use Whatsapp on iPhone 7 and Samsung, instead, for video calls and messaging

Also, whenever I am sent photos and videos through Whatsapp, it automatically puts it into my camera feed, so if I want to see one of my own pictures, I have to scroll through a bunch of photos, many of whom are from acquaintances who are in my Whatsapp group. 

VOICE INTERFACE: Samsung uses "OK Google"; iPhone uses Siri

VIDEOS AND PHOTOS:  similar; Samsung has a few more option - see demo

April, 2017: The Iphone stinks: My phone mysteriously deleted everything I had recorded in the calendar before about 5 days ago. Appointments I set for October and throughout the summer are gone.