As a Google Apps for Business client (a paid, cloud-based productivity suite that helps you and your team connect and get work done from anywhere on any device using ad-free Gmail), I was seeing that my Gmail contacts were rarely identical to my iPhone contacts. The number of contacts I had in my Gmail contacts was nowhere close to the number of my iPhone contacts. This problem happens because when I receive an email from someone in Gmail and add them to my contacts, it didn't always sync with my iPhone contacts. You'd think it would; but it doesn't. And the same thing happens when I add a contact on my iPhone.