I have always been able to allocate a ringtone to a contact on other older phones, but does anybody know how to do on the Nokia Lumia 635?
1. On Start button, tap People Tile, then swipe over to Contacts.
2. Tap the contact you want to change.
3. Tap Edit icon, then do one or both of the following:
-Tap Ringtone, then tap the ringtone you want to assign.
- Tap Text alert tone, then tap the alert or custom sound you want to assign for text messages.
Let me know if that works.