undo.be

4.2
4.2 Based on 39 reviews

UNDO is Belgium’s first climate-neutral mobile operator. We combine affordable mobile plans with real impact: CO₂ compensation, reforestation in Congo and Belgium, and Zero Waste on all our subscriptions. With us, unused data, minutes and texts don’t disa...

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Emerald Sanders
It's satisfactory

It's satisfactory. However, they should really improve communication regarding how long it will take for their sim to become active. I spent hours without a connection because my old sim failed and the new one wasn't activated yet.

3
Date of experience: Oct 06, 2025

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Business Details

  • UNDO is Belgium’s first climate-neutral mobile operator.
    We combine affordable mobile plans with real impact: CO₂ compensation, reforestation in Congo and Belgium, and Zero Waste on all our subscriptions.
    With us, unused data, minutes and texts don’t disappear — they roll over to the next month.
    No waste, no fine print — just honest mobile. Starting from €4/month.

    See more

  • email support@undo.be
  • call +32490461999
  • language https://undo.be/

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