Most contacts disappeared on S5. How to find them?

[AC Question]

My dad has 492 contact numbers and now he only has 81 left as they randomly disappeared. He asked me whether if I could bring back the contacts so I tried and did everything I could using google but couldn't find the answer.

The rest are not showing but when I clicked "import/export contacts", I could see see 0/492 on the checklist even though it only show 81 contacts so the rest is not deleted and is hidden somewhere because I could still see 0/492, right?

I ticked everything on the customized list on the "contact to display" setting and it still didn't show. I downloaded the contact syn fix and they said "no broken contacts or groups found".

Are there any other ways to bring back the contacts?

Thanks.

 

[B. Diddy]

Welcome to Android Central! Do you know if the missing contacts were saved to his Google account or the local Phone account? If you go to contacts.google.com on the computer (while logged in with his account), do you see any of the missing contacts there?