Messages app showing only number

[VidasMaceika]

So I got my Nokia Lumia 900 and when I write a message to my friend it sents message to contact "NAME" and when he replies with another SMS, new messaging thread creates and it shows his number.
How to fix this one?
I want to see his name always, not number in threads.

 

[user928]

My thoughts: Add his number to your Contacts and link the two.

 

[VidasMaceika]

Fixed this thing.
I wrote my numbers with start 86******** when I had my old phone.
When I changed start to +370******(+370 is country's code) everything got fixed.