Apple has added great new features like Control Center, AirDrop, smarter multitasking to iOS 8, aiming to make user's everyday life easier, faster and more enjoyable. I understand that you can't wait to try the latest iOS version, however, I do remind you to be cautious while performing upgrade in case of losing significant data like contacts, messages, video, photos and more.After you upgrade your iPhone 5/4S/4 to iOS 8,you may find that your contacts, or other data are wiped, even after restoring the rest of the device’s settings as in the norm.
iOS 8 Features Revealed at WWDC
Other hidden features of iOS 8 that we don’t have a clue about but hope to be useful for users are mentioned below
Battery usage by app
24 new dictation languages
FaceTime call waiting
Flyover city tours
Panoramic photos on iPad
Tips app
Private browsing per tab in Safari,‘Hey
Siri’ hotword,Wi-Fi calling support
You can have iOS Data Recovery (Mac) or iOS Data Recovery, a professional iOS data recovery program installed on your iPhone 6/5S/5/5C/4S/4 in case of files lost due to mal-operation. With iOS Data Recovery, you will be able to retrieve photos, videos, iMessages messages, attachments, WhatsApp messages, contacts, call history, reminders, notes, calendar, safari bookmarks, app documents and more on your iPhone device after iOS 8 upgrade.
Three Simple Ways to Recover Lost iPhone Data after Updating to iOS 8
Methods 1. Direct Restore Lost Data from iPhone
Methods 2. Extract to Recover from iTunes Backup Files
Methods 3. Extract to Recover from iCloud Backup Files
Methods 1. Direct Restore Lost Data from iPhone
Step 1. Connect your iPhone to the computer
Install and launch the iPhone Data Recovery on your PC, and connect your iPhone device via an USB cable. Then you'll see the primary window as the below picture.
Step 2. Scan the lost data on your iPhone
Click on the "Start Scan" button, and the program will automatically scan the existing or the lost data on your iPhone immediately.
Step 3. Preview and recover lost data from your iPhone
After a few seconds, all data in your iPhone will be displayed in categories, including your lost data and the existing data on your iPhone. You are allowed to press the menu on the left side of window to preview the content you want one by one, such as contacts, messages, and so on. After that, click on "Recover" button to begin restoring all the selected data back to your computer.
Methods 2. Extract to Recover from iTunes Backup Files
Step 1. Choose your iTunes backup and scan to extract it
When running the program, click "Recover from iTunes Backup File" on the primary interface to brings up the iTunes backup recovery window, here, you can see all the iTunes backup files of your iPhone or other iDevices which was created on this computer, choose one you want and click "Start Scan" to extract it.
Step 2. Preview and restore previous data as you like
The scan will take you some time. Once it's complete, you can see all data in the backup file will be extracted and displayed in categories. Check and preview them one by one, mark whose what you want and click "Recover" to save them back to your computer with a click.
Methods 3. Extract to Recover from iCloud Backup Files
Step 1. Choose the iCloud backup recovery mode and log in your account
Choose the recovery mode of "Recover from iCloud Backup Files", and sign in your iCloud on the pop-up interface.
Step 2. Download and scan your iCloud backup
Once you signed into iCloud, the iPhone Data Recovery will automatically find and show all the iCloud backup files to you, choose the one you want and download it. If done, click on "Scan" to scan and extract the data from it.
Step 3. Preview and recover the data selectively
The scanning program will be finish in a few minutes. Once it complete, you can preview almost all data in your iCloud backup file, like contacts, SMS, call history, and so on. Preview to mark them one by one as you like. If everything is OK, click on the "Recover button" to get them back to your computer with one click.
More resource reference:
How to Recover Lost Data from iPhone iPad iPod
How to recover lost iPhone contacts after updating to iOS 8
How to recover lost iPhone Photos after updating to iOS 8
How to Recover iPhone 6 Data After jailbreak