Azure Mobile App, Xamarin Forms, WP81 - Unable to load sqlite3.dll

I downloaded the sample Todo project for xamarin forms within the azure portal after adding a new mobile app. I use offline sync. Everything builds fine. However, when trying to run the WP81 project on my device (cannot run the simulator, I never managed to properly enable Hyper V on my bios), it crashes of that line

var store = new MobileServiceSQLiteStore("localstore.db")

It says Unable to load sqlite3.dll.

I looked on the web and found a sqlite.dll file corresponding to my version of sqlite (3.8.7.2) and added it within my ARM/debug folder but the error remains.

Any idea? Tks.