Hello. I'm from Poland, Wroclaw and I would love to know how you carry a practices programs for students ?

Hello, and thank you for your question.
Internship programs are of great importance, because they are the initial step of a professional career. Nokia has such programs and many colleagues have used them early in their careers.
Based on your studies and your desire, you can search for an internship program that best suits your skills and previous experience.
In the link below, you can try to find student positions in different countries and roles.
https://www.nokia.com/about-us/careers/
From my side, I would like to remind you that no initial professional position is binding, and it is obligatory to follow it forever. You should keep in mind that through this career step you will be led to the desired job role.

@Remi M. : you might want to share more about Wroclaw.

Hello!
Please check out the website https://nokiawroclaw.pl/careers/oferty-pracy/, where the data about open positions for students is up to date.
Additionally, I encourage you to attend job fairs in Wroclaw, especially on the universities there, where you can talk with the Nokia's representatives directly.
Good luck!