All You Need is Folx! Mobile Virtual Network Operator in Your App

Folx is a mobile network in... your app! Polidea provided development, design and project management expertise, delivering iOS and Android mobile applications.

Project scope


Folx is Poland’s first mobile network operator in… an app. Just as Netflix or Spotify, it is all about ‘now’ and ‘on-demand’ model. Easy access to your account, monthly subscription fee instead of regular bills and the possibility to opt out at any moment may make it a true game-changer for millions of mobile phone users. Polidea’s team delivered iOS and Android mobile applications dedicated to customers and Android one for drivers. We are super proud to be part of such a disruptive project offering mobile phone users the flexibility, comfort, and freedom, thus revolutionizing telecommunications industry.


Based on the extensive research and testing with users, it turned out that what we really want to do about our mobile phone provider is basically… nothing. That is precisely Folx’s promise in a nutshell. These days we don’t want to spend any time dealing with mobile providers, standing in lines, waiting on the phone or picking up SIM cards. Folx enables users to keep their current numbers or easily establish new ones (they can even choose their own combination to make it more personalized), change the mobile provider remotely (from the comfort of your own home) and perform all the formalities in your app. The offer covers the unlimited calls, messages and 20GB of the Internet connection plus the roaming service. It answers the needs of modern consumers—using the “subscription” model—so we may forget about “plans”, paper contracts and bills. What used to be time-consuming and tedious becomes convenient and super quick.

Man reading magazine


  • UX design
  • UI consultancy & design
  • iOS & Android development
  • Testing
  • Backend mockups
  • Creative sessions
  • Project management


As Folx’s partner, Polidea provided development, design and project management expertise but also cooperated with other teams involved in the project. The revolutionary mobile solution is thoughtfully designed to provide the smoothest and most satisfying experience possible. This has a lot to do with system permissions management that is suited to users with different needs and preferences. The app guides through the process, making it painless and quick. Along with the app dedicated to customers, Polidea’s team delivered one for drivers: minimalist, simple and highly intuitive, serving as a useful tool, with a clean interface and transparent architecture. It allows drivers to deliver SIM cards to Folx clients and easily navigate in some of the biggest cities in Poland. Both apps are integrated, creating a cohesive ecosystem and successfully addressing target groups’ needs.

Polidea delivered a complex project, starting from development, through management and design. We worked in a dynamic environment and I really appreciate the flexibility of the whole team. I can safely say that the whole product is our common success.
Paweł LewandowskiCOO, Folx


How to transfer the real-life, tedious process of setting up a new mobile account, managing it and using… to an app? Definitely not by doing it literally. What was one of the key challenges for design team was to create such an information architecture that will guide users, while keeping them aware of the crucial steps of the process. The clarity of users’ flow and the distribution of content was one of the key elements in the design, strongly based on testing and profound research. What makes this journey even nicer is the visual design, customized UI, and animated background.

It was fascinating to observe and be part of the whole process of creating such a big service. We all understood the value of creating a smooth experience for the future users that will distinguish Folx from other services.
AgnieszkaLead Designer

Hand holding phone showing Folx's UI


The biggest advantages of Folx app, namely the smooth integration with external systems and a 24-hour chat, were at the same time the most challenging elements for our developers. Nevertheless, our team dived into this exciting venture with an enthusiastic approach as we all bore in mind that we’re creating a brand new solution that needs to evolve. The forward-looking Folx team constantly worked on the product—that meant no fixed scenarios and openness for new solutions. Polidea’s development team was flexible and often worked on prototypes. What also optimized the work of developers, was the way we managed backend—our engineers provided the test environment to start without hesitation while waiting for the final code. This example of an agile approach to the project allowed us to work simultaneously and in a synchronized way.

iphone diplaying maps

That was an exciting technological adventure—being part of such innovative project gave us a unique opportunity to combine our skills with the expertise of the passionate Folx team.


Great teams make great products! Frequent stand-ups, updates, brainstorms, planning sessions along with regular demos and retrospective meetings made working on the Folx project successful. The cooperation between various teams was a key and the common goal of creating a brand new product connected them all.

Photos from Folx media kit



Contact us if you have questions regarding the projects, technologies or services we provide. We'll be more than happy to have a chat!


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Data controller:

The controller of your personal data is Polidea sp. z o.o. with its registered office in Warsaw at ul. Przeskok 2, 00-032 Warsaw, KRS number: 0000330954, tel.: [0048795536436], email: [] (“Polidea”)

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Used abbreviations:

GDPR – Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016
on the protection of natural persons with regard to the processing of personal data and on the free movement
of such data, and repealing Directive 95/46/EC (General Data Protection Regulation)

ARES – Polish Act on Rendering Electronic Services dated 18 July 2002

TL – Polish Telecommunications Law dated 16 July 2004

1)        sending to the given email address a newsletter including information on Polidea’s new projects, products, services, organised events and/or general insights from the mobile app business world |art. 6.1 a) GDPR, art. 10.2 ARES and art. 172.1 TL (upon your consent)

Personal data:name, email address

2)       statistical, analytical and reporting purposes |art. 6. 1 f) GDPR (based on legitimate interests pursued by Polidea, consisting in analysing the way our services are used and adjusting them to our clients’ needs, as well as developing new services)

Personal data:name, email address

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Your rights:


Used abbreviation:

GDPR – Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016
on the protection of natural persons with regard to the processing of personal data and on the free movement
of such data, and repealing Directive 95/46/EC (General Data Protection Regulation)

According to GDPR, you have the following rights relating to the processing of your personal data, exercised by contacting Polidea via [e-mail, phone].

1)       to access to your personal data (art. 15 GDPR) by requesting sharing and/or sending a copy of all your personal data processed by Polidea

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(art. 16 GDPR) by indicating the data requiring rectification

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6)       to object to processing your personal data conducted based on art. 6.1 e) or f) GDPR, on grounds relating to your particular situation (art. 21 GDPR)

7)       to lodge a complaint with a supervisory authority,
in particular in the EU member state of your habitual residence, place of work or place of the alleged infringement if you consider that the processing
of personal data relating to you infringes the GDPR
(art. 77.1 GDPR)

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