Cookies are used by most major websites to ensure you have the best user experience while on the site. Read on to learn more about how O2 uses cookies.

What is a "cookie"?
Why we use cookies
Managing cookies
Consent with the use of Cookies
If you are an O2 customer


A "cookie" is a piece of information, like a tag, that's stored on your computer, tablet or phone when you visit a website. It can help identify your device – like your PC or mobile phone – whenever you visit that website.

The cookie helps the website recognize whether you visited the site in the past and what sections were visited. At the same time, cookies also remember your login or user details so you don’t have to enter them very time you visit the site. For example, thanks to cookies, My O2 recognizes your settings such as language or login name.

Cookies are used by most major websites including O2. To make the best use of our website, on whichever device you use, you'll need to make sure your web browser is set to accept cookies. By visiting our websites you automatically agree with the use of cookies.

You can deny, delete, or request browser notification of cookies. Accepting cookies is usually the best way to make sure you get the best from a website. Most PCs automatically accept them but you can change your browser settings to restrict, block or delete cookies if you want. You can also set your browser to notify you when cookies are being requested. Each browser is different, so check the 'Help' menu of your particular browser (or your mobile’s user manual) to learn how to change your cookie preferences.

Many browsers have universal privacy settings for you to choose from. It’s important to note that disabling cookies can cause a website to not function properly, or certain sections of the sites will not be accessible to you.

What kinds of cookies do we use?

On websites we use two types of cookies:

  1. Relational cookies – are temporary and are automatically deleted immediately after you leave our website. They help customize the information you see during that visit.
  2. Permanent cookies – are stored in your device until you delete them, and can contain anonymous information such as the identification of your browser type.

These cookies do not identify you as an individual or reveal personal information. They only provide information on the access methods to the site and how the user arrived at the site (e.g. computer, tablet, smartphone, etc.). All data are gathered anonymously and used to understand how visitors use the site.

Permanent cookies can be used for measuring or advertising. The main function of the measuring cookie is to recognize a repeat visit to our website from the same browser, on the same device and the related activities of the visitor when browsing the site.

An advertising cookie enables a website to display targeted advertising, so that you see only the most relevant ads from O2 as well as our partners’ sites. Targeted advertising is displayed based on the behavior of an anonymous user or group of users via identification of their web browser as mentioned above. As an example, let’s say the last time you visited the site you searched for deals on mobile calling. During your next visit to the site you’ll probably see an ad with offers for mobile calling.

One of the partner websites connected to this advertising system is also You can opt-out from getting targeted advertisements on about services you have been visiting on our website.

Other kinds of cookies can be used to ensure that services on our site function properly (e.g. eShop), or for questionnaires or testing parts of the website and its functionality. All this helps us increase the quality of our services and your customer satisfaction.

If you visit websites operated by O2 Czech Republic a.s., company identification number 601 93 336, taxation identification number CZ60193336, seated at Za Brumlovkou 266/2, 140 22 Prague 4 – Michle (“O2”) and your web browser enables saving of cookies, you agree that O2 will process records about your behavior on these websites for the purposes of storing information about preferences when browsing these websites and for the purposes of O2 targeted advertisements provided to the user of this device via internet advertising space.

If you are a subscriber to services provided by O2 and you gave O2 in connection with their use a permit to process your personal data for business purposes, O2 is entitled to connect the data from cookies with your other personal data and to use it for these purposes as well; in accordance with the rules and conditions specified in the Regulations of personal data processing for O2 customers based on GDPR, which can be found at

Cookies are small data files that enable visited websites to remember the operations and settings that you have carried out. Cookies do not represent a threat but they are important for the protection of privacy. Cookies cannot be used on their own to identity the visitors of the website.

O2 furthermore uses third-party cookies especially to analyze the visits to the websites. These cookies are controlled by third parties and O2 cannot access the readings or records of this data.

If you do not want O2 to process the records of your behavior on these websites, limit or block saving of cookies in the settings of your web browser.

Information about the settings of a specific web browser can be found at the following addresses:

If you are an O2 customer and you visit our sites via your O2 service (e.g. using an O2 internet connection, O2 Mobile Internet, or Internet on Your Mobile), we reserve the right to identify you based on accessible data, including cookies. Cookies enable us to recognize what you were searching for on our websites, what services you were interested in, and therefore helps us identify how we can help you. If at the signing of your contract you gave us permission to send marketing messages, we may send you an offer of services or a tip that can help you solve what you were searching for at our website.

You can still deny, delete, or receive browser notification about cookies. Please note however, that we will be unable to proactively offer you help or a service that may resolve your inquiry.

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