
My iPhone 6 has suddenly started randomly restarting itself. Sometimes I am in the middle of using it and other times it is just sitting there on my desk not being touched, and I'll look over and notice the white screen with the Apple logo come on. It continues to do this and I have now lost all of my contacts and photos. I honestly don't know when the last time I synced my phone was but it wasn't recently, either through iCloud or through iTunes. So can you help you to recover lost contacts from iPhone after its randomly restarting? Thanks in advance. iPhone 6, iOS 9.3.1
Sometimes, you will encounter the problem that your iPhone keeps rebooting or restarting and data from iPhone like contacts are gone, just as the above iPhone user described. So the question is how to recover lost contacts due to iPhone randomly restarting? Is there any way to retrieve iPhone lost contacts after rebooting randomly? Definitely yes. We can offer you a method to help you get back lost contacts from iPhone with or without any backup.
When it comes to iPhone contacts data recovery issue, we always talk more about a professional iPhone data recovery software named as iFonebox, for with it, you can recover those lost contacts from iPhone without any backup after restarting randomly.
As the best iOS data recovery tool, iFonebox enables you to recover deleted or lost text messages, contacts, call logs, notes, wechat messages, etc, from iPhone or iPad directly. Plus, if you have an iTunes or iCloud backup for your deleted or lost data on iPhone, iFonebox is a great helper to extract and restore lost data from iPhone backup selectively, without wiping any data on your iOS device. So cool. The most attractive feature of iFonebox is that it supports to transfer recovered contacts back to your iPhone directly, just like notes and messages. Unbelievable.
It is necessary to download and install iFonebox on your computer firstly. There are two versions accessible: Windows version and Mac version.
How to recover lost contacts due to iPhone randomly restarting?
Launch iFonebox. Choose Recover from iOS Device mode. Remember to connect your iPhone to the computer with USB cable. Once connected successfully, iFonebox will detect your iDevice. If it is the first time to connect your iPhone to PC, you need to choose Trust the computer on your iPhone screen. Click Start button to begin.

Scan contacts from iPhone. Now just click on Contacts item to start analysis process. Larger data needs more time. Please be patient.

Preview and select lost contacts to recover. Now you have the chance to view those scanned contacts and then, select them, click Recover to Device button to transfer all found contacts back to your iPhone directly.

Notes: You can choose Recover from iTunes Backup or Recover from iCloud Backup to get back lost contacts to iPhone selectively if you have the backup data.
In a word, it is pretty convenient to retrieve iPhone lost contacts after keeps restarting via iFonebox.