I experienced it with my Stock Dialer,
If I don't invite up to hundreds of People, my Contacts, or include it in my Google Profiles, I have also a multiple Account,
because I have got new phone numbers, or can call cheaper by installing the popular Apps,
like Viber, HeyWire or other known Apps and have more virtual Phone Numbers,
And I am busy to activate Fax again,
It doesn't change the Contacts Info Details,
Like by syncing, Phone numbers appear by my Contacts, of Google in first Place,
I would like to see this Details automatically,
For to know, who has the same Apps, or their virtual US - or other Numbers,
The same with Fax, I never got somebody's Fax number by Sync,
And it begins in Fact with missing Profile Photos,
All the Apps from this kind promise recent Profile Photos, it didn't happen just once,
I have a Network at Home with a Fritz Box 7360 Modem /Router, a Modem with Voip, Answer Machines, Fax, and VPN, Nas.. all available with WiFi, and EU Telekom Providers don't have the Right to limit my Call Habits, like using WiFi,
or calling for free, that's my Decision,
I would be so happy to see one App,
That really organize my Contacts the Way I need it to be most efficient,
Caller ID is such a promise, I didn't find not one App, that's able to display an anonymous Caller,
Or let me send a SMS totally anonymous,
This are the Features I miss!