At present, the Connected Voice function only supports EMUI 9.1 and the smartphones which are updated to this version are:
Huawei P20 Pro,
Huawei MateRS Porsche,
Huawei Mate 9,
Huawei Mate 9 Pro,
If your devices still not updated to EMUI 9.1 or EMUI 10 versions, just tap on Settings > System > Software update > Check for Updates and Download it!
Or, You can also get this update via the Hicare app: HiCare > Update > Check for updates.
Or, Open the HiCare app > Log in > Select country/region > Agree to the User Agreement and Privacy Notice > Update > Request update > Apply > Checking for new system update > Download and install.
Also Check: EMUI 10 Update Download