Default G2 Model Number : Unknown ...

Hello all,

I have a G2,
But when I go in settings, I have the good IMEI
I have the IMEI SV : 00
and in hardware information I have Model Number : Unknown....
It not make problem at all, but realy strange ... and on Google Play on computer, when I want to Install a new app, he let me choose this phone, but i have : Bouygues Unknown for model name


Some way to fix this ? I tryed to restore EFS, but change nothing
\\\\\\\\\\\\\\\\\\\\\\\---> My App "LoL News" <-----//////////////////////