For the price of a coffee, call, surf & help the climate 🌍

 

With UNDO, you pay just €4/month for a mobile plan with zero waste and real impact.

🎁 Students get 1 month free on all plans with the code STUDENTUNDO.

 

📱 UNDO = Belgium’s first carbon-neutral mobile operator

We combine affordable mobile plans with real impact: CO₂ offsetting, reforestation in Congo and Belgium, and the Zero Waste principle on all our plans. That means your unused data, minutes and texts don’t disappear — they roll over automatically to the next month. Other operators delete them — we don’t.

 

💡 UNDO Zero Waste – student favourite

For only €4/month, you get:

• 4 GB data, 400 call minutes, 400 SMS

• Everything you don’t use rolls over to the next month

• 5G, 100% CO₂ offset, 1 tree planted per plan

Or choose one of our other plans with more data if you need it — always waste-free.

 

🎁 Special student offer

Use the code STUDENTUNDO and get 1 month free on any UNDO plan.

 

🌱 Your impact matters

With the UNDO app, track your CO₂ emissions and offsets live, and see how many trees are planted thanks to you. Know exactly what your plan delivers — for you and for the planet.

 

📍 Join now

Go to undo.be and use the code STUDENTUNDO.

 

💚 UNDO – Sustainable telecom. Zero waste. No compromise.