Following service allows to subscribers of Ucell to make call in the way that the person you are calling can’t see your number on the display of cell phone. But on the cell phone display of person will be shown "Number is undefined" or something else with accordance of specific cell phone options.
Service management: 
Service fee - 421 sum/daily (fee will be written off after service activation)
CLIR for 30 days
You can manage "Caller Identity Restriction" service using USSD command.
After successful request on activation of the service phone number will be hidden by default. Then, you can switch on and switch of the service any time from menu of your mobile phone. At the same time subscription fee will be withdrawn until deactivation USSD request is made.
If "Caller Identity Restriction" service is activated on your phone, and you want that your number to be identified while calling to another subscriber (e.g. friend) use combination of keys:
XXXXXXXXX or +9989YXXXXXXX, where XXXXXXXXX – number of cell phone you are dialing.
If "Caller Identity Restriction" service is activated but in the settings it is turned off, use next combination to hide your phone number:
XXXXXXXXX or +9989YXXXXXXX. Where XXXXXXXXX – called number.
| Command | Description | Direct dialing |
| 1 | Activation | *311*1# |
| 2 | Deactivation | *311*2# |
| 3 | Status check | *311*3# |
| 4 | Information | *311*4# |
All the functions can be managed via single USSD Menu by dialing *111*2*6#call.
All prices are given with VAT.
Within “We appreciate you!” loyalty program “Caller identity restriction” service with a discount in the full price is available to subscribers with the status:
You can take advantage of the service via special USSD request *136#. Detailed info
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