Barring O2 Uk: Samsung S9 Remove Call

This is the standard method for the Samsung Galaxy S9.

If the menu options are greyed out or not working, you can use direct codes to talk to the O2 network servers. samsung s9 remove call barring o2 uk

If you try to turn off call barring and receive an error message saying "Network or SIM card error," this usually means: This is the standard method for the Samsung Galaxy S9