- Yes
- Yes
- No. iCloud backup doesn’t include information already stored in iCloud, like Contacts, Calendars, Bookmarks, Mail, Notes, Voice Memos, shared photos, iCloud Photos*, Health data, call history, and files you store in iCloud Drive.
*-If you had turned on iCloud Photos, your content is automatically stored in iCloud
What exactly do you want to do, Import or Sync?
Backup: To protect your data from loss, a copy of your device data is kept in coded form. Can be used in case of upgrade to new iPhone or loss of iPhone etc.. by restoring from Backup. Option for both iTunes and iCloud is available,
Import: Store on Mac / PC / External HDD for long-term (Risk of HDD corruption / malfunctioning) Or Import from Mac/PC to iPhone. Photos and videos that you sync from your computer to your iOS device using iTunes can't be imported back to your computer.
Sync: Keep your data visible and available on all devices that you access to. Delete on one device will delete on all devices. Sync your photos manually with iTunes. Each time that you sync your iOS device with iTunes, the photos and videos on your iOS device update to match the albums on your computer.
Upload: To Cloud Drives (iCloud Drive, Google Drive, OneDrive, DropBox, Flickr, box, AmazonDrive etc) Long term data storage. with full data protection. Access from anywhere any time
