As we know, iMessage is a great feature of Apple's Messaging app, it enables us to send unlimited free messages over Wi-Fi or cellular-data networks for free to one person or to many friends at once along with photos, videos, contacts or links attached.
However, it's unavoidable that mistaken deletion happens due to any reason. So, the most convenient way to tackle mistaken deletion is to make regular backup. Backing up iMessages to your PC or Mac is the safest option since no matter what happen to your iPhone, you'll still have the messages.
Here, iOS Transfer is a professional tool that can help you to backup data from iOS device to Win/Mac computer easily, you may see the fully tutorial below or free download the program to have a try it!
Step 1. After downloading the program on your computer, you need to connect iPhone to the computer and the program will detect the device and scan all the files.
Step 2. You ought to click "information" on the top then you will find the SMS tab in the left sidebar.
Step 3. Choose wanted iMessages that you want to export on the right side. If you want to choose all, tick off the rectangle before content. Then, click "Export". Based on your needs, choose "Export to CSV" or "Export to HTML".
Step4. This will bring up a file browser window. Find a location on your computer to save the exported text messages. After that, hit "Open", this program starts to export text messages.
On the other hand, there are some new iMessages Features on iOS 10 that you may want to know about iOS 10 iMessage effect, like bubble effect, full-screen effect, Tapback and so on.