For recovering contacts from gmail account, your android device must be synced with the Google account». Because Google has the features where you can recover you deleted contact in your mobile. It will provide you the contact that were back-up before 30 days. And after you’re done with this process you can re-sync your account. So there were the methods in which we have got some ideas about how to recover gmail contacts.This would help you in future to recover your contacts if you have lost in any case.