Switching from Orange
The same network as Orange, from €4 a month.
You call and surf on Orange’s 5G network, with no minimum term. You keep your number for free, and whatever you don’t use in a month rolls over to the next.
Comparison
What you pay at Orange and at UNDO
Your usage | Orange | UNDO |
Up to 4 GB a month | Mobile Small | Zero Waste |
Up to 8 GB a month | Mobile Small | Rise |
Need more data? With Boost you get 30 GB and unlimited calls for €18 a month, with Wild 40 GB for €24. Orange’s Mobile Medium gives you 70 GB for €23 a month (€16 for the first 12 months). So compare with what you actually use.
Orange prices as listed on orange.be on 31 October 2026, without bundle discount. Prices may change.
Plans
Choose your plan
With every plan
- What you have left, you keep
- Your full bundle, in the EU too
- You keep your number
- Cancel any month
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Zero Waste
€4 a month
Everything you need, nothing you waste.
Choose this plan (Zero Waste)Included:
- 4 GB data
- 400 minutes of calls
- 400 SMS
1 tree planted at activation
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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
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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
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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
Good to know: keeping your number and an eSIM are free, shipping a physical SIM card costs €5. If you take a new number, you pay one month up front, and we settle that on your first bill. Extra data costs €1 per GB.
How it works
Switch in three steps
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Choose your plan
You create your account with itsme. No paperwork or copies.
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Keep your number
Enter the details of your current operator. We handle the switch and cancel your old plan.
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Activate your eSIM or SIM card
You install an eSIM with a QR code in about a minute. A physical SIM card is shipped within 1 working day and usually delivered by courier within 2 working days.
Why UNDO
Three reasons to switch
For every new plan, we also plant a tree in our own forest in Ibi Village, Congo.
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Orange’s 5G network
You call and surf on Orange’s network, with 5G if your phone supports it.
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One price, from €4
No introductory price that goes up after a year, and no 12- or 24-month contract. You can cancel any plan monthly.
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What you don’t use rolls over
Whatever you don’t use in a month rolls over to the next: data, minutes and texts on Zero Waste and Rise, data and texts on Boost, data on Wild.
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5 out of 5 stars
Happy purchase
From ordering eSIM to get connected took less than 3 hours. I had few questions while ordering and they helped me immediately by the chat. I'm very satisfied with their price and service, and happy to plant a tree!
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5 out of 5 stars
Extremely easy order
Extremely easy order prices and fast delivery. Activation went smoothly too. This was my second SIM. Have been using my first one for over a year now without issues. Contacting customer services is usually fast and efficient.
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5 out of 5 stars
Quick and clear answers
Quick and clear answers.
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5 out of 5 stars
Very friendly lady on the telephone
very friendly lady on the telephone.everything went good and nice
Frequently asked questions
Questions about switching
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.
How long does switching take?
With an eSIM you're usually active within the hour. A classic SIM card is shipped within 1 working day and usually delivered by courier within 2 working days.
If you keep your number, the transfer usually takes less than 24 hours. That depends on your current operator, who has to release your number. Until then, your old SIM card keeps working.
Which network does UNDO use?
UNDO uses the Orange network, with 4G and 5G. Both the eSIM and the classic SIM card work on 5G, if your smartphone supports 5G and 5G is switched on in your settings.
Am I tied to a contract?
No. There's no minimum contract period. You can cancel your subscription every month, and you can always take your number to another operator.
Which plan suits me?
Choose based on how much data you really use. Check your usage over the last few months.
Zero Waste (4 GB, 400 minutes, 400 texts): if you’re mostly on wifi, for a second number or for a child’s first phone.
Rise (8 GB, 800 minutes, 800 texts): if you chat, navigate and listen to music on the go every day.
Boost (30 GB, unlimited calls, 100 texts): if you call a lot and need more data, for example for work on the go.
Wild (40 GB, unlimited calls and texts): if you use a lot of data and often share your connection with your laptop.
Not sure? Start smaller. What you don’t use rolls over a month, extra data costs €1 per GB and you can switch plans every month.
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.
Does UNDO work with an eSIM or a classic SIM card?
Both. When you order, you choose an eSIM or a classic SIM card. If you choose an eSIM, you enter the brand and model of your smartphone and we check right away whether your device supports eSIM.
An eSIM costs nothing extra, you get it by email and it's usually active within the hour. A classic SIM card is a multi-size SIM card: you push out the right size yourself (standard, micro or nano). Shipping it costs €5.
How do I cancel my subscription?
Cancelling takes three steps:
Download the cancellation form and fill it in.
Send it to support@undo.be.
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.
Questions? Our team is here to help.
Send a WhatsApp message, call +32 490 46 19 99 or email support@undo.be.
On working days from 8.30 am to 5 pm. Or see all the ways to reach us.
