Listen.... I GOT IT...
well, it's a little bit weird but it's secured, simple and accurate 100%....
Check-Out the following...
1- Switch On the Sync between your iPhone and iCloud. by the following,
Settings > iCloud > Switch Contacts to be ON......"be careful to check your iCloud Website first www.icloud.com to not duplicate or to remove a contacts were still there and didn't used it before. to make it easy, just delete all your contacts on iCloud website and then Sync your contacts from your iPhone to iCloud as it's fresh one by switching on your iCloud from your iPhone again.
2- After you finish Syncing between iCloud and iPhone, log in to iCloud website and enter your username and password, check the Contacts Number down below by scrolling down the menu from the right column of words (A, B, C....#) and check the numbers and compare it with your phone, it should be the same.
3- there is Settings Button on a left bottom of the screen of your (Laptop, Desktop - Whatever 🙂) - Press it, and choose "Select All" > "Export" > Then it should save the *.vcf file to a specified folder in your machine "if you are using Google Chrome commonly you will find it in "Downloads Folder".
4- Log in to your Google Mail account and then go to contacts, then choose Import from a file, then search for the exported file on your machine and choose it, then the files automatically will be add inside the contacts folder.
Note: I understand that it's a little bit long way to do it but i'm sure that you will avoid duplication due to USB cable error or Software drop down either it's KIES if you are using SAMSUNG - GALAXY S3, S4....etc.
by this way, you will find your contacts are upto date always from iPhone to > iCloud to > Google Contacts.
Hope this helps 🙂
