How to use opencellid Database

How to use opencellid database. I have downloaded the database but mcc,mnc,lac of my mobile response is not matching with any row in database, but when useing opencellid api it shows correct lat, long ?

Hey Abhishek,

With the online API, you have access to OpenCelliD community data + Unwired Labs proprietary data.

But I have downloaded your database please can you you tell how to use it to get latitude and longitude.
As when i retrieve MCC ,MNC, LAC, Cellid no response match to database but same MCC,MNC,LAC,Cellid value give lat, long from your api.
As you are using the same database.