When you back up your iphone do your pictures get backed up as well?

I'm getting ready to get a new iphone, my question is when I connect to iTunes and back up my phone what gets saved in the backup? Contacts? Pictures? Apps? When I restore my backed up info to my new iphone will it look the same as it does now with all my apps, contacts, pictures, wallpaper, etc? Is there anything I need to backup another way to ensure it gets restored onto my new iphone? Please any advice is appreciated and go into detail if you can. I'm a bit paranoid to get a new phone as I have never done before and am worried I will lose all my pictures, contacts and everything.

Everything on your phone gets backed up.

Apps, pictures, contacts, videos.

When you have got your new phone, plug it in and click restore to backup, and it'll put all your backed up stuff onto your new phone.

Yes, all your files including apps, contacts, pictures, videos, notes will be backup. If you afraid losing files, you can use a 3rd party software like this iPhone to Phone transfer, it can help you transfer files between your two iPhones by drag and drop. So you can sure you have all the files transferred.