Assuming you've already paid Apple for the device and you don't want to make use of the 5GB free iCloud storage for backups, you could backup iPhone to iTunes o

Assuming you've already paid Apple for the device and you don't want to make use of the 5GB free iCloud storage for backups, you could backup iPhone to iTunes on your laptop (encrypted) and then ensure your laptop was backed up locally also. This way you avoid paying Apple for ever.