Is there a way to block outgoing calls on a cell phone so the number does not appear on caller id? I have been told you can do that, but it hasn't worked for me.....

TIA!
in humidity hell south Florida or high and dry Colorado
CG since 2005
2a, 2b, 3b - fine hair, low density - low/normal porosity
washing: cj curl assurance gentle cleansing, cj daily fix
conditioning: cj smoothing, cj strengthening, giovanni 50/50 balance, darcy's pumpkin seed, kinky curly knot today
styling: homemade fsg, kinky curly curling custard, cj pattern pusha, botanical spirits magic curls puree
pt: cj curl fix, cj repair me
avoid: humectants, polyquats