
Can anyone help? I just lost some contacts when I was adding new contacts to my iPhone. I don't know whether it is overwritten or something else. Now I just want to find those lost contacts, for some are my business partners. I just got an iCloud backup for them, can you help? iPhone 6s, iOS 10
To conclude from the above description, this user had difficulty in restoring lost contacts from iCloud backup to his iPhone. Actually, this is not a big issue for I have two tips to help you retrieve your iPhone lost contacts from iCloud backup easily.
The first method is much easier. As long as you have an iCloud backup for your missing contacts on iPhone, now what you need to do is to go to iPhone Settings> General> Reset> Erase All Content and Settings. After that, when restart iPhone, it will ask you whether to restore from iCloud backup. Just click yes and you will be able to restore the whole iCloud backup to your iPhone again, including your lost contacts from iPhone. Quite simple, right? But the risk is you will also wipe other important data from your iPhone like messages if not backed up with iCloud. So I have another better method to help you get back lost contacts to iPhone from iCloud backup.
The second method is to restore lost contacts from iCloud backup to iPhone under the help from iCloud backup extractor--iFonebox. As is known that iFonebox is a professional iPhone data recovery tool which can not only selectively retrieve lost contacts from your iCloud backup, without wiping any data on your iPhone, but recover deleted or lost messages, notes, contacts, wechat data, etc, from your iPhone 7 Plus/7/6s Plus/6s/6 Plus/6/5s/5/4s directly, so cool and amazing. Also, you can recover deleted or lost contacts back to your iPhone directly, not just to your computer. Next, detailed steps are shared to help you restore only contacts to your iPhone from iCloud backup via iFonebox.
Before that, it is necessary to download and install iFonebox on your computer. There are two versions optional: Windows version and Mac version.
Steps to restore only contacts from iCloud backup to iPhone
Launch iFonebox. Choose Recover from iCloud Backup mode in the main interface of the program and then, you will need to sign in with your Apple ID and password. Remember to turn off your two step verification ahead. After that, you have the chance to select your iCloud backup to download.

Download Contacts from selected iCloud backup. After you have selected one iCloud backup to download, iFonebox will start the downloading process. Also, you can select only messages to download to save more time.

Scan and preview lost contacts from downloaded iCloud backup. After downloading process finished, you are able to access and view those missing contacts from iCloud backup. Just click on Contacts item and scan lost data from it. You can transfer recovered contacts back to your iPhone directly by clicking Recover to Device button.

To be short, it is quite convenient to restore lost contacts from iCloud backup to iPhone selectively within the help from iFonebox. Also, you can choose to restore from iCloud backup directly if you don't added any new data to iPhone. Two tips for you to get back iPhone lost contacts from iCloud, which one is much better?