Q: If someone using an iPhone product is died and his iPhone is in lock(Apple ID)how do I use since I don't no any of his information

Bring the device, a copy of the death certificate, and a copy of the original receipt to a physical Apple Store. Apple should be able to help.

I'm sorry, but that's the only way; failing a Store, the death certificate and the original purchase documents the phone can not be unlocked by any method.

I'm guessing this means you do not have an Apple Store where you are located. You can use this support document to try and contact Apple and make an inquiry over the telephone and see if they can offer any other service.  Contact Apple for support and service - Apple Support