“I’ve had my iPhone 6 for about one year and when I connected the iPhone 6 to my computer today I was prompted to update to iOS 9, so I did. But somehow I didn’t realise that it may erase all iPhone data after ios update,I never back iPhone to iTunes or computer... having failed to remember it after a few attempts I simply left iTunes to get some troubleshooting advice. When I got back it seems that the password prompt had disappeared and my iPhone seems to be back to its original settings.After update iPhone to ios 9,it cause lost all data,I can’t found any contents any more.How can I restore the data that was on the iPhone after ios update 9?”–Ask by Yube in apple discussions .

“After upgrading the iPone 5S from a previous iOS version to iOS 8,and I need to have iPad data and settings back, directly after updating iPhone to iOS 8. However, even a well-engineered upgrade can sometimes fail and may lead to data loss.Is it possibile to restore iPhone after update to iOS 8?”–Ask by Tomik in iPad discussions.

It is important to take time and back up iPhone, iPad data and settings right before upgrading. If for any reason you do not have backed data after upgrading to the new iOS, it may cause lost data. As we discovered,you still have chane to recover lost data from iPhone and iPad after iOS update.

To recover iPhone iPad data after updating to iOS 8 or iOS 9,you can use this iPhone iPad Data Recovery or iPhone iPad Recovery for Mac,both allows you restore iPhone lost data after ios update,as well as iPad and iPod.You can use this iOS Data Recovery to restore your lost files after upgrading your iPad,iPhone to iOS 8 or iOS 9 by extracting the iTunes backup. In addition, the data recovery software can help you to recover lost contacts, text messages, photos, videos, notes,ect from iPhone, iPad directly.

Steps to Recover Lost iPhone Data Contacts after Upgrading to iOS 9

Step 1: Run the iOS Data Recovery and connect iPhone to computer

Run the iOS Data Recovery program on your computer after downloading and installing it. Connect your iPad to the computer, and you’ll get the interface as follow when it’s detected.

Step 2:Scan deleted files from your iPhone

The program will start scanning data on your iPhone automatically. You just need to wait for the end of scanning and check for the scanning result.
Step 3:Preview and restore files from iPhone

When the scan finishes, all found data will be list in categories. You can preview most of them so as to check whether they are what you want to recover or
not.
You can select “Only display the deleted items” to check how many lost items have been found by iOS Data Recovery. Then you can select files you need and
click “Recover” to save them back to your computer.

Read more:
How to Recover Lost Data from iPhone, iPad and iPod

How to Recover Deleted Contacts from iPhone

How to Recover Text Message from iPhone

Three Ways to Recover Photos from iPhone and iPad

 

It's easy to get contact back on iCloud, the iPhone contacts recovery tool provide the best function to access iCloud backup files and recover from iCloud, you only need to login iCloud account and the software will find all backup, you can choose the one to extract, after scan the backup, you can see all contacts display in scan result, you can select the one to restore. If also can support to restore contacts on iPhone directly, so if you delete contacts by accidentally and want to get them back, use this tool for help.

 

Lost or delete your important iPhone data after upgrade/factory reset, you may want to know the way to recover iPhone contacts if you don't sync iPhone. Now you don't need to worry about this issue, the iPhone data recovery can help you bring back your lost data whatever your device is iPhone, iPad, or iPod touch. You can directly restore data from iPhone, extract iTunes or iCloud backup files.
how to recover iPhone videos
how to iPhone iPhone call history

 

I think you can try to use iPhone Data Recovery. It can scan your iPhone deeply to find the deleted and lost data for you. You can preview them before recovering. Learn how to recover deleted contacts from iPhone. Besides contacts, you can also recover messages, photos, videos, call history, notes, reminders, calendars, voice memos, voicemail, safari bookmarks, Whatsapp messages and other deleted data from your iPhone.