It doesn’t do that. You will see the speeds on the PFD the rotate speed is marked with a magenta <]
Some planes will have call outs some won’t. There is an add-on called FS2Crew which may support the Fenix.
Are you filling in the PREF Take off page? You should see your speeds and you get them from the EFB
V1
V2
VR
Maybe check in the EFB if it has the call outs, it has GPWS callout settings so it may have settings for V1 / V2 / VR