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How to top up your credit

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We're giving away free data until 31. 12. 2024.

We're giving away free data until 31 December 2024.

Top up your phone with a minimum of CZK 300 and win 1 GB extra to your activated data package!
You can use the promotion as many times as you like.
Every time you top up your phone above CZK 300, you automatically get 1 GB extra for free.

Sazka terminals

  • Top up credit at more than 4,900 locations in the Czech Republic. Every vendor who offers Sazka top-up displays the Sazka logo on their door.
  • To top up OpenCall SIM cards, simply enter the telephone number and select O2 (provider of top-up service) in the list of operators.

    • ATM

    OpenCall SIM cards can be topped up at ATMs of the following banks:

    Select O2 in the list of operators.

    Top-up cards

  • When topping up OpenCall SIM cards, use O2 top-up cards. Top-up cards can be bought at your nearest newsagent. Find your nearest one in the list of sales points.
  • Type *102*(14-digit code on top-up card)# into the display or top up using the online service.
  • Your credit will then be added to the current balance on your OpenCall telephone number.

    • Online banking

    Credit can be topped up on the online banking services of the following banks:

    Select O2 in the list of operators in the app.

    Other top-up locations

    OpenCall SIM cards can be topped up at the following shops and petrol station networks:
  • Česká pošta, Tesco, Žabka, ESO market, PEPCO
  • Shell, OMV, Benzina, MOL, EuroOil
    • Select O2 (provider of top-up service) in the list of operators.