All My already saved contacts is now showing up as unknown when calls are incoming

[Android Central Question]

Hi I recently purchased a new phone samsung J6.
I bluetooth all my contacts to my new phone...and now all my saved contacts is showing up as unknown only when the caller calls me..all the contacts are saved on the phone with names etc though.
Is there something you can help me with I will truly appreciate it.
Thank you

 

[B. Diddy]

Welcome to Android Central! Are your contact numbers saved with or without a country code? See what happens if you either add a country code or remove the country code (depending on how they're currently saved).