No whatsapp contact whereas my contacts are intact.

[WPCentral Question]

when i am opening whatsapp in my android mobile it is showing in chats - photograph & the number of the person in the contact list, Not showing the name which i have saved in my contacts, secondly whatsapp is showing No whats app contact, when i am trying to go to contacts through my whatsapp.

Please let me know a solution to this.