Gmail Contacts Sync to iOS7 Device Problems and Solution

I wasted the better part of yesterday afternoon and evening in frustration. My 2200 or so odd Google GMail contacts stopped updating on my iPhone 5S and iPad (both on iOS7.)

First, let me just state that I have multiple email accounts on my devices. Second, let me state that I've set them up myself. Third, I'm not a programmer, just a middle aged engineer and mobile aficionado with pretty good technical skills, but not an expert at IP lingo and software configuration.

The accounts on my phone are:

• Personal GMail
• Work GMail
• iCloud
• Side business iMap email

I was using my personal GMail to manage all my contacts. I decided to go this route due mainly to GMail's ability to find and merge duplicates. On my work PC, I use Outlook to access my work GMail and it created a separate Contact database...another source of frustration causing some duplicate contacts.

Long story short, let's focus on the problem and solution. My GMail contacts weren't synching. I tried deleting and adding my GMail account multiple times following the instructions on Google's page: https://support.google.com/mail/answer/2753077?hl=en  

Here's what I didn't realize until about 10pm that night - My work GMail was not set up correctly. 

I set it up as a Google type of Account under Settings>Mail,Contacts, Calendars>Add Account

What I should have done is set it up as an Exchange Account using these instructions: 

https://support.google.com/a/users/answer/138740?hl=en

To my surprise, once I set up my work GMail account as an Exchange Account rather than as a Google Account, my personal GMail contacts started synching properly.

No, I don't understand why. I assume there was some kind of conflict inside my devices as a result of having two differently configured GMail accounts set up as Google accounts. All I know is when I fixed the work account, then my personal contacts started synching again. Perhaps the order in which the accounts were added was part of the problem as well. 

Hope this helps!