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Zero Waste

4 GB of data, 400 minutes and 400 texts for €4 a month. One tree at activation.

€4 a month

Choose Zero Waste

Cancel any month. Keeping your number is free.

What’s included

Zero Waste up close

Data
4 GB in Belgium and the EU
Calls
400 minutes
SMS
400
Network
Orange, 4G and 5G
EU roaming
Your full bundle, in the EU too
SIM card
eSIM or physical SIM card
Trees
1 at activation
Notice period
None, cancel any month

Zero Waste not quite right?

Compare all plans
  • Most popular

    Rise

    €8 a month

    The best balance between price and usage.

    Choose this plan (Rise)

    Included:

    • 8 GB data
    • 800 minutes of calls
    • 800 SMS

    1 tree planted at activation

  • Boost

    €18 a month

    For those who want more, without compromise.

    Choose this plan (Boost)

    Included:

    • 30 GB data
    • Unlimited calls
    • 100 SMS

    1 tree planted at activation

  • Wild

    €24 a month

    Total freedom, and a new tree every month.

    Choose this plan (Wild)

    Included:

    • 40 GB data
    • Unlimited calls
    • Unlimited SMS

    1 tree planted per month

Who is UNDO?

A Belgian mobile provider with its own forest.

UNDO runs on Orange’s 5G network. Switching, your invoice and your usage are all handled online or in the app.

For every new subscription, we plant a tree in our own forest in Ibi Village, Congo. And every month you get CO₂ credits to support a certified climate project of your choice, at no extra cost.

How it works

Who is Zero Waste for?

For people who are mostly on wifi, need a second number or a child’s first phone. You don’t pay for data you won’t use. Often watch videos on the go? Rise (8 GB) gives you more room.

  • What you don’t use carries over

    Data, minutes and texts you don’t use in a month carry over to the next month. That month, you use them up first.

  • Need a bit more?

    Then you pay €1 per extra GB. Or add an extra bundle in the app, from €2 a month.

  • A tree and CO₂ credits

    When you activate, we plant a tree in our forest in Congo. And we support certified climate projects with CO₂ credits.

In practice

How far does 4 GB go?

Estimates if you spend your whole bundle on one activity, off wifi. Your actual use depends on the app and the quality.

  • About 80 hours of music

    Streaming music in standard quality uses about 50 MB an hour.

  • 4 to 8 hours of video

    Standard-quality video uses 0.5 to 1 GB an hour. HD uses it up faster.

  • Chat, email, maps

    Text messages, email and navigation use little data. Sending photos and videos uses more.

Frequently asked questions

Questions about Zero Waste

What happens if I use up my data?

You just keep surfing and pay €1 per extra GB, up to the out of bundle limit you set yourself. Once you reach that limit, your usage outside your bundle is blocked until the end of the month.

Often need more? Add an extra bundle in the app, from €2 a month, or switch to a bigger subscription.

Can I add extra data or texts?

Yes. In the app or in My UNDO you can add an extra data bundle or unlimited texts, from €2 a month. You'll find them under YOUR TARIFF: click SHOW ME if you don't have any extras yet, or MANAGE to add or stop extras.

Need more for just one month? Then you simply pay €1 per extra GB. You'll find the prices on the Plans page.

What happens to the data, minutes and texts I don't use?

You take them with you to the next month.

  • At the end of the month, whatever you have left rolls over.

  • The next month you use that up first, and only then your new bundle.

  • Whatever is still left after that expires. So rollover always applies for one month.

With Boost, data and texts roll over; with Wild, only data. You see what you have left in the app or in My UNDO under YOUR TARIFF. If you cancel or take your number to another operator, it expires.

Can I get a subscription for my child?

Yes. On your own account you can order up to 7 SIM cards. You stay the main account holder: you pay the invoices and manage the settings. Your child logs in with their own number and only sees their own subscription.

Can I keep my number?

Yes, and it's free. When you order, you say you want to keep your current number and give the details of your current operator. We handle the transfer.

  • Enter your customer number and the SIM card number of your old operator exactly. A mistake there is the most common reason a transfer is refused.

  • Your old SIM card keeps working until the transfer is done. You get a text as soon as your number is active with UNDO.

  • Your old subscription ends automatically. You don't need to cancel it yourself.

You can follow the status in the app or in My UNDO, under YOUR TARIFF. As long as the box around your number is grey, the transfer is still running. Once it turns green, your number is active.

Can I change my subscription?

Yes. In the app or in My UNDO, click MANAGE under YOUR TARIFF and choose CHANGE SUBSCRIPTION. Pick the new subscription and confirm.

Your new subscription starts on the first day of the next month. Until then you stay on your current subscription, and as long as the new month hasn't started, you can still cancel or change the switch.

How do I cancel my subscription?

Cancelling takes three steps:

  1. Download the cancellation form and fill it in.

  2. Send it to support@undo.be.

  3. We stop your number and confirm by email.

At the start of the next month you get one last invoice, for your usage and your subscription up to the day your number stops.

Taking your number to another operator? Then your UNDO subscription ends automatically once the transfer is done. You don't need to cancel anything.