How to sync my contacts with their gmail account? I have bought Nexus 4 and i have imported phone contacts from my older Phone. I don't have email id for many of the contacts,i have just their phone numbers alone. Now i want to sync them with their email. Is there any way to do this. And is there any way to sync them with their fb account. (To be clear my question is if i can sync them to their gmail or fb by just using their Number). Actually i have 'Add Connection' option in 'People' tab and i'm able to get the contacts from Google Plus correctly. But when i add them to circles they are saved as separate contact and my old contact with phone number alone as separate contact.
The best way is to create or import your contacts under Google account. You can add both Email or Facebook info under each contacts. You can also log in to Facebook app and sync Facebook contacts. Same name will be linked automatically and you may need link manually for the remaining contacts.