*#*#4636#*#* not working

[My_HTC_HD2]

Secret menu *#*#4636#*#* is not working on my galaxy note 10 plus SM-N975F.

Please help

I want to enable VoLTE buy the toggle isn't available

 

[blackhawk]

*#*#4636#*#* works on my AT&T N975U Pie variant.
Found this.

 

[My_HTC_HD2]

Very strange ut doesn't work with my global version, even with truecaller