Nokia Lumia 730 - why isn't it displaying saved names?

[WPCentral Question]

Nokia Lumia 730 - not diplaying saved names

I am using a Nokia Lumia 730 purchased in India. Recently I had moved to Kuwait. When I save the contact numbers with or without the country code, it doesn't display their names when an SMS arrives or call comes. How to rectify? I tried saving the contact details with country code and without code. If saved with country code, it shows the name when SMS arrives. But not during the call.