Most (all?) contact apps use a simple matching to connect the incoming caller ID with the data in your phone book. The incoming data is the full 10-digit number including the area code. This will require your phone book to have all 10 digits for each contact.
Much of the USA is now in a pattern of 10-digit local calling due to overlapping area codes. If your carrier is having problems with 10-digit local calling, you need to talk to them. Which carrier are you using?
If you cannot resolve this with your carrier, you should be able to store multiple phone numbers for each contact, one with and one without the area code.
08-08-2018 01:34 AM