Unity and SQLite not working after build

I posted this in the official forum, but I'm sure it will help someone out here in the same situation as me.

Hi buddies, I try to be as brief as possible.

I'm working on an application with a SQLite embedded database. In the editor and the build of PC accesses the database without problems. However, when it comes to the build of Android, I test it on a device and for some reason unknown to me is not working.

I followed the steps of some official forum guides. I have also added the plugins folder of this project:

http://ift.tt/1LXCSZb

Despite this, I still can not run the database after the build. I've tried a thousand things without result. I attached in the post the code that use the connection to the database.

http://ift.tt/1AJgpym

I accept any advice. Thanks in advance. Greetings.