iOS 10.3 is currently available as a Beta and will be publicly released sometime between now and the end of April. Under-the-hood, iOS 10.3 is replacing the 30 year old HFS file system with the new Apple File System (APFS). This should provide more data storage capacity and will speed up the ability to move and copy files.
It is strongly recommended to backup your device before installing iOS 10.3!
There are two options for backing up your iOS device: Backup to iCloud and backup to iTunes.
To backup to iCloud
- Connect your device to a Wi-Fi network.
- Launch the Settings app.
- Select iCloud.
- Scroll Down to Backup.
- Turn backup On.
- Select Backup Now.
- To check that your backup is finished: Select Settings > iCloud > Storage > Manage Storage, then select your device.
* You can choose to automatically backup to iCloud.
To backup to iTunes
- Open iTunes and connect your device to your computer.
- If the message asks for your device passcode or to Trust This Computer, follow the onscreen steps.
- Select your iPhone, iPad or iPod when it appears in iTunes. If you device doesn't appear in iTunes, learn what to do.
- If you want to save Health and Activity data from your iOS device or Apple Watch, you need to encrypt your backup: Select the box called Encrypt (device) backup and create a memorable password. If you do not want to save your Health and Activity data, select Backup now.
Be sure to save your encrypted backup password, as there is not a way to recover the backup without this password!
After the backup process is completed, check by going to iTunes Preferences > Devices. If using iTunes for Windows, choose Edit > Devices. You should see your device with the date and time of the iTunes backup. If you encrypted your backup, you will also see a lock symbol beside the name of your device.