Contacts duplication in writing new message in messaging app

[Alam1998]

When I want to write a message to my contacts in messaging app ,I press space to see the contacts and they display duplicated.

I recently formatted my device and backed up my contacts, then restored them. Some contacts were missing so I deleted all the contacts and restored once again.  My contacts all aren't in english, I made the system language english especially for the screenshot. 

When I browse my contacts I don't see them duplicated as they're displayed in writing new message in messaging app.

any suggestion for the problem would be appreciated, thanks.

[Alam1998]

Thanks, I'll look up for that and update you soon

[Alam1998]

@alexdon I found out why contacts appear to be duplicated, that's because certain contacts are linked to google and whatsapp, so I tried removing whatapp and google link by editing an individual contact and pressing on unlink contact button at the whatsapp and google tabs, then realized that it isn't duplicated anymore when writting a new message. I saw that my vcf. file doesn't contain duplicated contacts when I tried viewing it in a vcf reader 3rd party application. Is there a possible way to unlink contacts from whatapp and google once? Because unlinking many contacts individually takes so much efforts...?

[_alexdon_ · Accepted solution]

I don't know about another way to unlink all contacts at once. Not sure if there is any use if you set a single filter as they are linked, I would have suggested leaving only local contacts.

[Alam1998]

That was the point, thanks a lot!
Now the contacts aren't duplicated & it's more convenient to use at writting new messages

[_alexdon_]

I almost didn't believe that myself when writing. Nice @Alam1998!