HTC EVO 3D

Find "Call barring settings"

Press the menu icon.

Find "Call barring settings"

Press Settings.

Find "Call barring settings"

Press Call.

Find "Call barring settings"

Press Call barring settings.

Select barring option

Press one of the following options:
All outgoing

Select barring option

Outgoing international

Select barring option

Outgoing international roaming

Select barring option

All incoming

Select barring option

Incoming calls when roaming

Select setting

Key in your barring password (default is 0000) and press OK.
A request to change the setting is sent to the network.
The action is confirmed on the display.

Exit

Press the Home key to return to standby mode.