No "Format as internal" choice on Asus zefone 3 Max 7.0

[Android Central Question]

Hello,
I want to format my SD card device into internal storage.
Why are not these options available?

Thank's

 

[B. Diddy]

Welcome to Android Central! It looks like not all ASUS devices with Marshmallow or above support Adoptable Storage. See this possible solution: https://www.asus.com/zentalk/thread-79993-1-1.html