O2 Call Barring [repack] -

To appreciate O2’s Call Barring, one must first distinguish it from standard phone settings. When a user rejects a call via their handset, the caller often hears voicemail or a busy signal after the phone rings locally. In contrast, O2 Call Barring operates at the network level. When a barring rule is active (e.g., "Bar all outgoing international calls"), the O2 switch—the central computer routing the call—blocks the connection before it ever reaches the recipient’s line. The caller might hear a recorded announcement such as "Network service restricted," or the call may simply fail. This distinction is crucial because network-level barring remains active even if the SIM card is moved to another phone, and it works regardless of the handset’s power state or software glitches.

If you have changed your four-digit barring password and forgotten it, you must call O2 (202) to have it reset. o2 call barring

Dial #barring code*password# then press call. Common Codes: All Outgoing: 33 All Incoming: 35 Outgoing International: 331 3. Contacting O2 Customer Service To appreciate O2’s Call Barring, one must first

Some bars, like those placed due to unpaid bills or credit limits, cannot be removed via settings. You will need to settle the account balance first. When a barring rule is active (e

Open the and tap the Menu (three dots/settings icon).