How does Apple 6S back up SMS photos and iPhone6S back up data?

First of all, if you don't have iTunes software installed on your computer, you can go to Apple official website to download the latest iTunes software and install it.

After installing the iTunes software, please connect the Apple iPhone6 phone to the computer with the data cable.

Then, please open the iTunes software, wait for the iPhone to be recognized, and click the iPhone icon in the window, as shown in the figure.

Then you can see a "backup now" button in the window, click it to continue.

Next, iTunes will prompt us whether to back up the application software in the iPhone, and we can choose according to our actual needs. Take "backup application" as an example, as shown in the figure.

Then please wait for iTunes to perform the backup task slowly. The backup time depends on the amount of data on the phone. If there are many photos or applications, the backup time will be longer. If you choose not to back up the application in the previous step, it will be faster. Don't disconnect the data cable between the computer and the mobile phone when backing up.

If you choose the backup application like me, we will be prompted to use the Apple ID account for authorization during the backup process, and then the application software on the mobile phone can be backed up to the computer. Click the "authorize" button, as shown in the figure.

Then please enter our own Apple ID account and password, and click the "authorize" button.

Then please wait for iTunes to connect to the network and verify that the Apple ID account and password we entered are correct. If the verification passes, we will see that several computers have used this account for authorization, and we can also see the progress of the application being backed up in the status bar.