How to restore my Apple iPhone 6S
You can use iTunes to restore your Apple iPhone 6S from a previous backup.
Note: Restoring from backup is different from performing a full software restore. Restoring from backup restores the settings, data and other information saved in a previous backup. Performing a full software restore will delete the contents of your device and restore it to the original factory settings.
In this example, we use iTunes v11.1.0.126.
1. Ensure your Apple iPhone 6S is connected to iTunes.
2. On the computer, select your Apple iPhone 6S.
3. Select Restore Backup…
Note: iTunes will not offer this option if no backups have been performed.
4. Use the drop-down menu to select a backup, then select Restore.
5. Wait while the backup is restored.
6. Click OK.
7. Wait while the Apple iPhone 6S is synced.
8. The restoration is complete and the Apple iPhone 6S can be disconnected from the computer.