Call Blocking

Save money by controlling your incoming and outgoing calls. With Call Blocking you can keep unwanted callers at bay, or avoid taking expensive international calls while roaming.

Are you working on something important and do you not wish to be disturbed by any calls? Block all incoming calls. As soon as you finish your work, you can turn of blocking of calls and everybody can reach you again. You can block any types of calls and services.

The service is free and you can block any types of calls or all calls with the exception of emergency calls to 112. 

Types of calls that can be blocked

  • All outgoing calls (including calls abroad) 
    This feature prevents your phone from being used to make calls, but allows calls to be received.
  • Outgoing calls abroad 
    This feature prevents your phone from being used to make international calls. If you use this feature while traveling abroad, you can still make calls within your current country, but not to the Czech Republic.
  • Outgoing calls abroad (apart from calls to the Czech Republic) 
    This feature prevents your phone from being used to make international calls. If you use this feature while traveling abroad, you will be able to make calls to the Czech Republic, but not to any other countries. You will also be able to call within your current country without limits.
  • All incoming calls 
    This feature allows you to make calls from your phone, but prevents anyone else from reaching you.
  • Incoming calls abroad 
    This feature prevents you from being able to receive calls while traveling abroad.

Detailed information

Modifying the service

To connect or disconnect the service, you will need to enter your security password (automatically preset as 9999). You can change this password by entering the network code mentioned in the chart below. All security passwords must consist of four digits.

Network codes

You can specify which features of the Call Blocking service will be active by entering any of the codes below. For example, if you enter *35*security code*11# and send it like a phone call, the service will block all incoming calls but still allow you to send and receive SMS messages.

To block all outgoing calls 
including calls abroad
Connect *33*security code*service code# [send]
Disconnect #33*security code # [send]
Check status *#33# [send]
To block outgoing calls abroad     Connect *331*security code*service code# [send]
Disconnect #331*security code # [send]
Check status *#331# [send]
To block all outgoing calls abroad with the exception of the Czech Republic Connect *332*security code*service code# [send]
Disconnect #332*security code*service code# [send]
Check status *#332# [send]
To block all incoming calls     Connect *35*security code*service code# [send]
Disconnect #35*security code*service code# [send]
Check status *#35# [send]
To block all incoming calls while abroad     Connect *351*security code*service code# [send]
Disconnect #351*security code*service code# [send]
Check status *#351# [send]
To cancel all active call blocks       #330*security code # [send]
To change your security code       *03*330*old security code*new security code*new security code#[send]

Default code set by mobile network is 9999.

Important note: If you do not enter a service code, all mobile services will be blocked (voice, data, fax, and SMS services).

Service Service code
All mobile services 10
Voice services 11
Data services 20
Fax services 13
SMS services 16
All services apart from SMS 19
Data and fax services 25
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