The subscriber`s number is blocked when the balance on the account is reduced to zero (for “Sof” TL: the number is blocked in case of insufficient funds on the balance at the time of writing off the monthly subscription fee according to the tariff plan).

In the blocked status:
- Communication services, the change of the tariff plan, the possibility of purchasing additional services are not available;
- Free incoming calls and SMS, calls to IVR, calls to emergency numbers and service numbers, account replenishment are available for up to 80 days of being blocked (if there are no additional prohibitions under the specific tariff plan).

If the subscriber does not replenish the account within 80 days from the moment of blocking, then on the 81st day all calls are blocked, with the exception of outgoing calls to IVR, emergency numbers and service numbers. The ability to receive any SMS messages remains.

If the subscriber does not replenish the account before the expiration of the period of stay in the blocked status, the Contract is terminated and the phone number goes to the list of available numbers.

In this case, in order to resume using Ucell services, the subscriber should reconnect to the Prepaid system.

Subscriber’s number blocking period, whom the Company has limited or suspended the provision of services in accordance with 3.1.2.1., 3.1.2.2. and 3.1.3. statements of the Contract for the provision of cellular radiotelephone communication services is 30 calendar days from the moment of blocking. 

To resume the use of services for blocked subscriber numbers before the expiration of 30 days from the moment of blocking, the subscriber needs to apply to one of the Company's own offices with an identity document and a SIM card of a blocked number.

A subscriber number is not subject to unblocking if the number was used to install access gateways to a fixed network and IP telephony, manufacture for sale or sale and distribution of special software or hardware to obtain illegal (unauthorized) access to a protected computer system, and to telecommunications networks, as well as illegal (unauthorized) access to a telecommunications network for the purpose of using it and passing international traffic bypassing established protection systems, as well as storing and creating conditions for the operation of special software or hardware designed for these purposes and other activities that lead to malfunction of the equipment or communication devices of the Company. After 30 days, the subscriber number is terminated, and the Agreement is terminated by the Company unilaterally.

If the subscriber number has been blocked due to lotteries, voting, competitions, advertising, surveys, mass mailings, the subscriber must submit an application to the Company for unblocking and not using the subscriber number for the above purposes further. The Company reserves the right to refuse to unblock and terminate the subscriber number unilaterally after 30 days.