O2 - How To Remove Call Barring

In Germany, Call Barring is usually controlled by the "MMA" code rather than the international standard codes.

If you lost your barring password or codes don’t work:

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This works for standard call barring (like barring outgoing international calls). You usually need your . If you have never changed it, the default PIN is often 0000 or 1234 .

In many cases, call barring is a handset-level setting rather than a network block. You can often toggle this off directly in your phone app. In Germany, Call Barring is usually controlled by

Dial #330*PASSWORD# then press call.

If you cannot find the menu settings, you can use universal GSM codes to reset barring. Enter these into your phone's dial pad as if making a call: Hi all, I would like to be able

Depending on whether you are an O2 customer in the or Germany , the steps and codes differ slightly. Most users looking for this are UK customers.

(e.g., #33*0000# ).