How can I backup ma can not ontact and my photos on my new phone because my iPhone 6is missing

Marking your own post as Solved may prevent others from trying to help because they think you have fixed your problem.

If you aren't syncing them to iCloud

Backups – Choose Method

Back up your iPhone, iPad, and iPod touch.    

Back up – What does iCloud back up

If you want to sync them to iCloud.

Set up iCloud.     

Set up iCloud (2)U.