You can set up a custom ring tone and text tone for your contacts so you can know if the person calling or messaging you is someone you want to communicate with now. By customizing tones for certain people in your contact list, you can know who is “touching” you without looking at your iPhone.
Here is how to do it: find the contact for whom you want to set up a custom ring tone and/or messaging tone. Once you have the contact record on your screen, press the “edit” button in the upper right-hand corner. Scroll down until you see the “ringtone” and “text tone” fields; they will have ‘default’ next to them (that means that your iPhone will use the default ring for that contact). Tap the function you want to customize and then select the tone that tells you when that person is contacting you. Tap “Save” and then tap “Done” in the upper right hand corner.
Once you have a custom tone set for a contact, it shows on the contact’s info page and you can edit or delete it by tapping it.