If you lose or damage your iPhone, iPad, or iPod touch, you don’t want to be losing all of your data. Think about all of the pictures, videos, messages, passwords, and other files on your smartphone. If you lose or damage one device, you could end up losing a significant chunk of your life. There’s one easy and effective way to ensure that you never lose data. On iOS, backups are very easy and most people won’t need to pay anything to do this. You’ll have to plug-in your iOS device to a PC or a Mac and install iTunes if it’s not there already. You will also need to plug-in your phone to this computer every time you want to back up the device, unless you have a computer that is on all the time and connected to the same Wi-Fi as your phone.
How to Backup Your iPhone, iPad, iPod touch via iTunes
Connect your iPhone, iPad, or iPod Touch to your PC or Mac.
Open iTunes on the PC or Mac.
If you use a passcode on your iOS device, unlock it.
You may see a prompt asking whether you want to trust this computer. Tap Trust.
On iTunes, a tiny icon showing your iOS device will appear in the top bar. Click it.
Under Backups, click This computer.
Click Back Up Now. Now iTunes will begin backing up your iOS device.
Once the process is finished, you can check for backups by going to iTunes > Preferences > Devices on your Mac. Preferences is under the Edit menu in iTunes for Windows.
You can select the Automatically sync when the iPhone is connected option for iTunes to launch automatically and backup your iPhone when it is connected to this computer.
You can also use the Sync with this iPhone over Wi-Fi to have iTunes backup your phone wirelessly.