You can also adjust the ringer volume by pressing the Volume button when a call or music is not in progress.
Assigning a caller ID photo
1.Press Phone/Send 
.
2.Select the Contacts favorites button.
3.Open the contact you want to give a photo caller ID.
4.Select the Picture box.
5.Select Camera to take a photo and add it to this contact entry when you save the photo, or select Photos to add an existing photo to this contact entry.
6.Select the photo you want to assign to this contact.
7.Select Done.