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How to top up your credit

We are giving away data for free for each top-up until 30.6.2022!

Top up at least 300 CZK of credit and get 1 GB extra for active data packages!
Take advantage of this special offer as many times as you want.
You automatically get 1 GB of data extra free every time you top up at least 300 CZK.

    • 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.

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

    Select O2 in the list of operators.

    • 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.

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

    Select O2 in the list of operators in the app.

  • 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.