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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Babette
Satisfied user

The website is clear and very user-friendly. The support team is excellent, responding quickly and resolving any issues promptly. Additionally, this is the most affordable phone plan I've ever had.

5
Date of experience: Nov 19, 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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