It's a different setting. In your phone "app" go to settings, then CALL settings, then from that menu click on "supplementary services". There the 1st option is "show my caller ID", you can change it from network default to hide. Just don't forget to change it back because none of your friends will answer "private number" (it would say when you place calls). I hope this helps.
I have that option greyed out in my phone too too. I have a Note 10+ (SM-N975U1) which I ordered from the US, and I'm using it from Latin America.
Some posts say that it might be to region restriction or maybe my network carrier doesn't support that feature... Anyway, the only solution that really seems to work (according some posts in the web) is to flash the firmware with Odin, but I'm afraid to even try it since I believe it might create conflicts with Samsung Knox or another security feature within the phone.
Dear all, I have a S10 (SM-G973F) branded by the Italian TIM. Few months ago I flashed the last no brand firmware (ITV), by Odin. Since this update, the caller ID spam protection option is greyed out, I cannot enable it.
Probably the no brand firmware do not match some TIM settings on the phone.
Is there any solution to enable the spam protection option?
Really many thanks for any your help. Regards.