An eSIM plan from €4 a month. Your eSIM is free.

Then choose a classic SIM card when you order. When ordering, you enter the brand and model of your smartphone, and we check right away whether eSIM works. That way you know straight away which SIM card you need.

Smartwatches are not supported for now.

After your order you get an email with a QR code and a PIN code. Is the eSIM for someone else? Just forward the email.

1. Scan the QR code with your device's camera.

2. Follow the steps and unlock your eSIM with the PIN code from the email.

3. You get a text as soon as your eSIM is active.

Important: don't delete the installed eSIM from your device. You can only install a QR code once.

Can't scan it? You can also add the eSIM manually:

• iPhone: Settings > Mobile Service > Add eSIM > Use QR Code.

• Android: Settings > Connections > SIM manager > Add eSIM > Scan QR code from service provider, and confirm.

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.

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.

Yes, with a SIM SWAP. In the app or in My UNDO, go to MANAGE under YOUR TARIFF and choose SIM SWAP. Choose eSIM and follow the steps. You get a new QR code by email, which you install on your new phone.

Once your eSIM is installed, it's moved over on the network. That can take up to 2 hours. You get a text as soon as it's active.

Don't delete your eSIM from your old device before you request the SIM SWAP. That way you stay reachable until the new eSIM works.

No, not for now. The UNDO eSIM works on most smartphones and tablets with eSIM. Check your device's specifications if you're not sure.

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.

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.