Two methods can help you to recover lost data on iPhone .

One. Recover deleted data from iPhone yourself via iTune:
1. Connect your phone with iTune on computer
2. Right-click or control-click on the iPhone icon under iDevice on iTunes
3. Select "Restore from Backup" from the given options
4. After it finishs, your histories are back to your iPhone

Important Note: This works only if you have made a backup for your chat history on iTunes.

Two. Restore contacts,messages,photos,videos,ect from iPhone by using third party iOS data recovery for Mac

If you have no backup for your chat history you can download iPhone data recovery software in order to overcome the problem and restore iPhone chat history loss. Still you have not recovered lost whatsapp chat history from iPhone, some on-line applications also available which can be helpful in restoring precious contents details, probably will be able to find the solution to some extent.

With the help of iPhone Data Recovery you can also do the following:
* Get lost data back from iPhone automatically within a few minutes
* Retrieve all lost or deleted WhatsApp Chat History, SMS messages, pictures, notes, etc. from iPhone.
*Recover contacts from iPhone directly without backup
* No need of manual configuration or specific technology and skill
*Restore messages from iPhone directly
*Recover iPhone lost photos

here are the tutorials for you to recover iphone contacts using the professional iOS Data Recovery for iPhone. This recovery program can not only recover contacts from your iPhone but also retrieve any other lost data, like lost photos, videos, messages, bookmarks, etc by extracting files from iTunes backup of iOS device.

Do you know how to get contacts from iPhone backup?

No matter whose fault or because of system problem, we basically take a risk of losing data from our phone nowadays. Unexpected photos lost happened a lot, which cause lots of unconvenience. If you lost your iPhone photos after the system updates or unintentionally by yourselves, you may wondering whether you can get them back.
You may think is there any way to recover your lost data. My answei is Yes! As long as you use this powerful software--iPhone Data Recovery, which is designed to help iPhone/iPad/iPod touch users to recover notes from iPhone. It provides you with three ways to get deleted data back, including images, messages, contacts, call history,notes, videos, calendar,etc. You can directly recover data from your device or regain from iTunes backup or iCloud backup. Is it easy to use iPhone Data Recovery?
If you still have problem with using this program, you can check the links as follows.

How to Export iPhone Contacts
How to restore data on broken iPhone
How to backup data on locked iPhone

If you didn't back it up or extract it to your computer in between the time you created it and the time you deleted it, it is gone. Permanently. There is no "undo".

If you have the backup data then you can recover the deleted photos in iphone 4s. For recover deleted photos follow the below steps with iPhone Data Recovery.

Steps to follow to recover deleted photos from iPhone 4S :

1. First of all turn on the iphone 4S.

2. After turn on locate the backup application where you got stored.

3. So,open it by double tap on it.

4. Now find and go to the photos folders.

5. Here select the photos which you want to recover.

6. After selecting tap the options and click the restore option.

7. After restore check the photos recovered or not in your iPhone 4S.

Thank you.

There are 2 ways you can try to recover iPhone lost data:

1. If you have used iTunes to backup your iPhone before, you can restore them back by iTunes.

2. If you do not have any backups, you can try to use some third-party recovery tools, such as Tenorshare iPhone Data Recovery, which can directly scan your phone and help get your lost data back. What’s more, no matter you use Windows or Mac, you can download the free trial version and have a try by yourself.

I found a video guide which may help you work it out, you can find it here:
https://www.youtube.com/watch?v=bGZjMgRkIps&feature=youtu.be

Some iPhone Users ask: I want to jailbreak my iPhone,before jailbreak backup everything(Contacts,Call history,Music and SMS) to iTunes. After jailbreak iPhone can I restore iphone contacts,SMS,Call history and Music?
how to retrieve deleted text messages on iPhone
iTunes automatically put your iPhone in the current data, including contact information, stored in a laptop backup, so you just need to restore the iPhone to the last time you connected to the computer data storage, then you will be able to retrieve accidentally deleted and lost contact information. Here to introduce you the specific steps.
how to recover deleted photos from iPhone

But the generated iTunes backup file is a sqlite database file, data in it which cannot be viewed or taken out normally, thus you need specially designed iTunes backup extractor to implement iPhone Data recovery.
see more: how to recover deleted imessages on iPhone

In order to recover lost data from iPhone, you must use iPhone Data Recovery to help you. It can recover data from iPhone directly. It can also recover lost data from iTunes or iCloud backups. So it can be very helpful tool for iOS users. Here is a guide about how to restore contacts on iPhone. You can have a look and give it a try.

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