When placing your order on undo.be or in the UNDO app, you indicate that you want to keep your current number, along with the details of your current operator. UNDO then takes care of the transfer with your old operator.

Important things to know upfront:

– The transfer itself usually takes 1 to 5 working days, depending on the response time of your current operator. UNDO unfortunately has no control over this.

– Until the moment of transfer, your old SIM card remains active. You will receive an SMS as soon as your number is active on the UNDO network.

– Your old operator automatically stops your service as soon as the transfer is complete. So you don’t need to separately cancel your old subscription with your old operator.

You can track the status of your transfer in our app or in “My account” at https://wsc.undo.be/?lang=en, under “YOUR TARIFF”. As long as the frame around your number is grey, the transfer is still in progress. Once it turns green, your number is active at UNDO. When placing your order, fill in all fields correctly. An error in your customer number or SIM card number at the old operator is the most common reason why a transfer is refused.