"I can't wait to follow the tutorial for iOS 9/8 update on iPhone 6s/6s Plus/6/6 Plus/5s/5c/5/4S on Mac, but my iPhone 5s froze up during the process! Unwillingly, I hard-rebooted it but only to find that all the iPhone contacts disappeared!"
Indeed, it's a common phenomenon that your iPhone contacts, photos, messages, etc. inexplicably disappear after reboot or factory reset, causing great inconvenience to most iUsers. Then how to quickly retrieve disappeared iPhone contacts becomes the biggest headache.
Frankly speaking, iPhone Data Recovery tool for OS X users is a trustworthy data recovery program for you. It enables you to retrieve up to 20types of missing or deleted iPhone files like contacts, messages, call history, etc. within several clicks. Moreover, it not only supports SE/6s/6s Plus/6/6 Plus/5s/5c/5/4S but the latest iPhone SE running iOS 10/9.3.2/9.1/9. Amazing, isn't it? Read on and learn how it works.
And if your computer runs Windows 10/8.1/8/7/Vista/XP, you can take advantage of iPhone Data Recovery, an equivalent Windows version of iPhone Data Recovery for Mac.
To function more user-friendly, iPhone Data Recovery for Mac provides 3 recovery modes for your selection in case that your iPhone couldn't be well-connected to Mac or you haven't synced iPhone recently. The following are the step-by-step guide on each mode. Select one that suits you best.
If you have neither synced your iPhone with iCloud or iTunes recently, then this mode is your best choice. But make sure your iPhone can be well-connected to Mac.
This mode is especially useful when your iPhone is lost or physically damaged. But the precondition is that you've backed it up on Mac.
Though iCloud backup is not as frequently-used as iTunes backup, this mode is still of great use since it won't cover the current data on your iPhone.
The detailed steps are almost the same as Mode 2 except that you need to login into iCloud account to download the iCloud backup to Mac before scanning.
FYI, in case that the WhatsApp chat history lost from your iPhone, you can click to see How to Recover WhatsApp Messages.