SInce 2018 .It is not possible to barr incoming calls . Samsung s7 , s8 ask for password.. which neither samsung is aware of nor the service provider.
Can any one help please . It so much paud to call every time service provider to get or barr incomming calls .
@S8xxxs: Are you wanting to block ALL incoming calls, or just specific numbers or contacts?
For general call blocking/barring options please open your Phone application > Tap the 3 dots in the top right > Settings > More Settings > Call Barring > Voice Call > Activate your preferred options.
If you tap the 3 dots again in the top right you should see the option 'Change Password', however this does require you to know the old password. Default should be '1234' or '0000' however if you have purchased the phone second hand then you may wish to contact the vendor directly to enquire about any passwords they had in place. Apologies for any inconvenience this may cause you.