Lost caller id and numbers

[mamatb]

Hello,
while visiting my sister in Va recently my verizon Iphone lost all caller id while in that state. Upon returning to TN. all caller id was returned. How do I keep caller Id everywhere I travel?

 

[hang-the-9]

Contact Verizon http://support.verizonwireless.com/clc/

You could have just been in a bad coverage area.