I have an iPhone 5, and stored my contacts on it, but I observed that when most of the contacts call me, the names I stored them with do not display, rather it is just the phone number itself that displays. What is the cause?
If the phone number that show up on the caller ID screen does not match the number you have entered in the contact record exactly, the phone can't match the number with a name. Look carefully at both. What is the difference between them?