How can you activate enhanced Google services on an oppo android oreo?

[Android Central Question]

I really want to use the "ok Google" feature but after I registered my voice, it doesn't work. I thought that it has something to do with my voice but when I was about to change it in Google setting, the voice section is all gray. It says I need to turn on enhanced Google services first. I followed the directions but I don't have language and input in my Oppo A3s.

I'm asking the advice of all Oppo A3s users or just Oppo android oreo users to what I should do to turn on enhanced Google services. Thank you for your time reading this and thanks in advance.

 

[B. Diddy]

Welcome to Android Central! Did the phone come with Google Play Services and other Google apps preinstalled, or did you have to install them yourself? I ask this because Oppo makes a lot of phones for the Chinese market, where Google services are blocked.

 

[Shieromaki M]

All the Google apps and Google assistant are preinstalled

 

[B. Diddy]

What language are you using? Ok Google only works on certain languages at this time: https://support.google.com/assistant/answer/7394513?co=GENIE.Platform=Android&hl=en