Can a mobile plan really be sustainable?
At UNDO, we believe sustainability only works when it’s holistic — not just carbon numbers or tree counts. That’s why we act across all three pillars of sustainable development: people, planet, and progress.
Progress matters — but only if it stays fair, viable, and within planetary limits. We don’t aim for perfection. We aim for real change, one mobile plan at a time. No greenwashing. Just honest action.


Society – Impact that starts with people
We support communities — starting with the people who grow the UNDO Forest. In Congo, local families care for the trees and earn income from their growth. As a subscriber, you can support extra social projects like school internet access, classroom renovations, medical aid, farming tools, beekeeping, or even planting more trees in Congo or Belgium. And with plans from just €4/month, we make climate-positive choices accessible to all.

Economy – Growth that gives back
UNDO mobile plans are designed to benefit both you and the systems they support. There’s no extra cost for sustainability — it’s built into every plan. We reduce digital waste by letting your unused data, minutes, and texts roll over each month. Through our reforestation partner GI-AGRO, tree planting and agroforestry generate income for families, supporting healthcare, education, and food. We also keep it transparent: no hidden fees, no overclaims, no fluff.

Environment – Mobile that protects the planet
UNDO helps reduce mobile’s climate impact in practical, measurable ways. Every subscription plants a tree in the UNDO Forest — over 13,000 trees so far. Acacia trees in Congo grow 10× faster than in Belgium and absorb up to 21 kg of CO₂ per year. We offer full CO₂ compensation through reforestation and low-tech, real-world projects. We also encourage eSIM to cut plastic and shipping, run our infrastructure on renewable energy, and raise awareness of mobile’s footprint through our app — while staying fully transparent about our own emissions.
UNDO Forest – From promise to action
Our sustainability isn’t built on theory—it’s rooted in real projects, real people, and real results. Below, you’ll find a few of the initiatives we’ve supported together with our community. From planting trees to connecting schools, from honey production to healthcare, these projects bring our three pillars—people, planet, and progress—to life. Want to stay up to date? Follow us on social media to see how the impact grows.
Our forest – 13.293 trees and counting
Every UNDO subscription helps grow our forest in Congo, where trees grow 10× faster than in Belgium and capture more CO₂ in less time.
Together with local partner GI-AGRO, we’ve planted 13.293 Acacia trees—each with the potential to offset up to 21 kg of CO₂ per year, while generating income for the families who care for them.
Ibi Village, Congo
13.293 trees planted
Goal: 25.000

Local roots – Trees planted in Belgium
UNDO doesn’t only plant trees in Congo. Together with our community and partners, we’ve also supported tree-planting projects here in Belgium—restoring local biodiversity, strengthening green spaces, and making impact visible close to home.
Want to know where we’ve planted?
More info is available on goforest.be
Belgium
46m2
Goal: 667m2

Bright starts – A playschool for the UNDO Forest
Thanks to a €400 contribution from UNDO members, workers at the UNDO Forest can now leave their children in a safe and restored playschool building while they work. Since June 2024, this space has offered young children the chance to learn, grow, and simply enjoy being kids.
We’re not stopping there. With your support, we want to equip the school with books and bring internet access to open even more doors for the future. We need €750 to make it happen — and we’re counting on you to help us get there.
Ibi Village, Congo
Achieved: playschool renovation
Goal: school books & internet
Next target: €750
Collected: €408

Growing strong – Supporting farmers at the UNDO Forest
At the UNDO Forest, we combine Acacia reforestation with cassava agroforestry to enrich soil health and prevent erosion during heavy tropical rains — turning degraded land into fertile, resilient ground.
Thanks to a €150 contribution from UNDO members, we provided essential gear like boots and gloves in June 2024 to help local farmers care for the forest in all weather conditions.
Next up: we aim to provide rain gear and nursery tools to keep the project growing strong.
We’re raising €350 to make it happen — and every contribution helps.
Ibi Village, Congo
Achieved: boots & gloves
Goal: rain gear & nursery tools
Next goal: €350
Collected: €76

Buzz & bloom – Beekeeping at the UNDO Forest
Bees are essential for biodiversity and food security. At the UNDO Forest, local families are now practicing beekeeping — producing honey for nearby markets while helping protect vital pollinator populations.
Thanks to your support (€265), we installed five beehives in April 2025 and kickstarted a sustainable source of income for the Ibi Village community. But we’re not done yet — we’re now raising funds for essential equipment and additional hives to expand the project.
Help us close the gap — and keep the buzz going.
Ibi Village, Congo
Achieved: 5 beehives
Goal: beekeeping equipment & additional beehives
Next goal: €400
Collected: €261

Health first – Care for the UNDO Forest community
Good health is the foundation of thriving communities. At the UNDO Forest, your support helps make healthcare more accessible — by subsidizing doctor visits, providing basic medication, and improving the local dispensary so it can better serve workers and their families.
To make these upgrades possible, we’re raising €1.300. Together with the UNDO community, we can build a healthier future for the people who care for the forest.
Ibi Village, Congo
What’s included: doctor visits, medicine, dispensary rehab
Target: €1.300
Collected: €907

UNDO Removal – Progress through real climate action
UNDO Removal is our way of turning subscriptions into real climate progress. Each mobile plan includes CO₂ credits that you can assign to trusted carbon removal projects — making your mobile use 100% climate neutral.
These projects support the planet by permanently removing CO₂ from the atmosphere, using nature-based or emerging technologies. We carefully select partners who meet high standards for transparency, long-term impact, and environmental integrity.
With every action, we aim to balance our footprint — and move toward a fairer, more livable future.
Our UNDO CO₂ retirement certificates
Frequently asked questions
More FAQ’s available here
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What is “UNDO Removal”?
UNDO Removal aims at connecting the UNDO community to literally carbon removal technologies! In an attempt to balance the amount of carbon released due to human activity, these technologies ensure the removal of atmospheric carbon and long-term storage for over 100 years in different forms such as demolished concrete, or underground sequestration! One of the most critical challenges of the present day faced by such technology-driven projects is the high cost of project execution, which can be lowered by applying the principle of economies of scale. UNDO procures high-quality, certified REMOVAL credits from individual project developers across the globe. Projects are verified by independent 3rd party agencies and follow internationally recognized benchmarks and reporting standards such as Gold standard, Puro earth, and Verra. For our members, UNDO removal is a way to choose projects of their choice and be carbon-neutral by compensating their emissions every month. You can use your CO2 KGs pre-included in your monthy subscription at no extra cost.
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What are my carbon KGs?
Just like GBs each UNDO subscription includes a certain amount KGs (Kilogrammes). Consider these as your personal emission credit that can be used to compensate your monthly emissions resulting from your smartphone use. You can find these KGs and carbon compensation projects in the “UNDO Removal” section. Just log in to the app, assign KGs to the project you like and hit “Compensate”! This allows each member to choose the project(s) that best suit them in just one click. In case your emissions are higher than the available KGs you can purchase extra KGs in the form of add-ons. You can find these add-ons by tapping on ‘SHOW ME’ in ‘Your Tariff’ section via the mobile app or web customer portal. Your KGs that remain after compensation will be carried over and added to your available quota next month.
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How are my emissions calculated?
The overall emissions displayed include the following:
(1) DEVICE – UNDO computes the emissions produced during the manufacturing of your device, taking into account whether your device is new or used. The data is gathered from environmental product reports issued by manufacturers like Apple, Huawei, and Fairphone.
(2) BATTERY CHARGING – UNDO estimates your daily power consumption and resulting emissions based on how much time your device spends under charge.
(3) TELECOM USAGE – The energy consumed by the network to provide you with services such as calls, text messages, and data is calculated by UNDO according to your number of calls, SMS, and GBs used.
(4) ONBOARDING & ACTIVATION – UNDO also factors in the one-time emissions resulting from the ordering, the sending as well as the activation of your UNDO SIM card. If it is a:
– Physical SIM card, this represents a total of 8,1 KG of CO2
– eSIM, this represents a total of 3,1 KG of CO2. -
What are my CO² emissions?
Your CO2 emissions are a result of using your smartphone on a daily basis. Smartphones work on various rare earth minerals such as gold, cobalt, lithium, silver, and silicon. The mining of these components releases carbon into the atmosphere. Similarly, the manufacturing of the smartphone also causes emissions. As a user of smartphones, we also rely on our 4G/5G networks to make calls, surf on internet, use various applications, and occasionally send text messages. These networks consume electricity to power up and function. Electricity often comes from non-renewable sources and causes emissions as well. Similarly, our phones need to be charged which again consumes electricity and causes emissions. All these sources combined lead to CO2 emissions that can be attributed to us as a user.
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What are my CO² compensations?
As an UNDO member, you have the chance to contribute to the fight against climate change. Planting trees is surely one of the simplest ways of helping and having a direct impact. That is why each new member joigning UNDO plants one tree by default in our UNDO Forest – a natural carbon sink. But that is not all, every UNDO member can also support emerging carbon removal technologies such as biochaar, CCS, and enhanced weathering via “UNDO Removal”. Your monthly emissions calculated via our mobile app can be neutralized by assigning the same or greater number of KGs across one or more removal projects of your choice that UNDO proposes.
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What is “UNDO Forest”?
UNDO Forest is a project that aims to create a natural carbon sink that will absorb and store carbon below the ground in soil. It’s 100% owned by UNDO. The project is being developed in the Democratic Republic of CONGO, near the town of Kinshasa. We work in collaboration with our partner IBI Village, which helps us with on-ground activities. The project aims to plant 25.000 trees in its 1st phase. The concept of agroforestry is applied that ensure maximum utilization of the land and turn a dry savannah into a habitat filled with acacia, corn, and manioc. Every new subscription guarantees planting 1 tree but that is not it. Under the project, our membres can also support additional social initiatives by adding “UNDO Forest” add-ons to their monthly subscription. This way our community not only helps the planet but also helps out the local population by providing employment, and aid, much like the UN sustainable goals.
UNDO provides regular updates about the progress of the project and on ground activities via photos, videos, or even interviews of locals via our social media channels. Follow UNDO on Facebook, Instagram, Tiktok to stay updated.
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Why does UNDO plant trees in Congo?
UNDO plants trees in Congo rather than in Belgium to make a greater environmental impact and support global sustainability goals. The Congo Basin is one of the world’s most important carbon sinks, absorbing far more carbon dioxide than forests in Belgium due to its tropical climate and fast-growing trees. By focusing reforestation efforts in this region, UNDO helps combat severe deforestation, which is a major contributor to global carbon emissions.
Additionally, restoring the Congo’s forests helps preserve biodiversity and protect endangered species. The vast areas of degraded land available in Congo also allow for large-scale tree planting, which wouldn’t be feasible in more urbanized regions like Belgium. This approach maximizes the positive impact on climate change, ecosystems, and local communities.
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What are “UNDO Forest” add-ons?
UNDO Forest add-ons are initiatives that are aimed at improving the lives of the locals and helping quicken the planting of trees in our UNDO Forest. The projects are actually picked from the list of wishes that was put together by the locals that live nearby and help us in maintaining the trees, planting new ones or even building firewalls to protect our precious forest from burning down in natural forest fires during the dry season. These initiatives directly help improve the quality of life of the locals in the form of planting more trees, providing medical aid for local families, educational support for their children, buying farming tools, or even preserving important members of the biodiversity such as bees!
You can find these add-ons by tapping on ‘SHOW ME’ in ‘Your Tariff’ section via the mobile app or web customer portal.