
While updating our iOS device to the latest version, unexpected system breakdown caused by sudden power failures or network interruption that forcibly close the running programs can result in data damage or loss. Recently, one iPhone user from Apple community has encountered such an annoying experience, and don’t have a clue to find lost calendar events after iPhone upgrade to iOS 10.3:
I just updated my iPhone 7 iOS 10.3, and I've lost all my calendar entries on the Apple Calendar. I have a lot of important stuff in there, unfortunately, I had not made any backups in iTunes or iCloud. I called Apple tech support and they said I should have made backups. The unfortunate thing is that when iPhone prompted me for the update, there was no warning that this could happen or that I should back up my phone! Can anyone tell me how to retrieve my calendar events?
It seems intractable to recover missing calendar events after iPhone update to iOS 10.3 without any backup, unless turning to iFonebox for help, which is a professional iOS data recovery, and definitely able to detect the missing data right through the iOS device. Even if there’re no available backup for you, only few steps need to take before your data is back in your hands as long as you have an accessible and well-connected computer.
In addition to retrieve iPhone lost calendar events after iOS 10.3 update, iFonebox is able to retrieve as many as sixteen kinds of data, from text to media information. With this irreplaceable application, you can find lost group chat in WeChat app from iPhone easily and conveniently. Even though you’ve lost your iPhone, you’re still in capable of regaining memorable photos from associated backup.
Aside from an excellent iPhone data recovery application, iFonebox is also a great transferring tool which can help you migrate app attachments from iPhone to computer effortlessly. If you don’t want to back up the whole data that stored on your device before each upgrade, you have options to save them selectively with the help of iFonebox.
iFonebox is compatible to almost every kinds of iPhone, iPad or iPod touch, just install the right version to your computer. After downloading it, please follow my instructions to complete the all steps.
Step one: Launch the Software
Run iFonebox after you download it on your computer, connect your device to iFonebox with USB cable, then, you’ll see a bold Start in the center of the interface, click it, so you can continue to next stage.

Step Two: Scan the data
It will start to scan after you click the Calendar icon, the more data existing, the longer time it will to take to scan, just please wait when you see a rotating circle.

Step Three: View and restore
Finally, you’re able to check the missing calendar events you want to recover, select the checkbox and retrieve them to your PC.
