No, we will begin the process of switching the operator, that is the plan, approx. one week after you placed the order. From then, it takes another 2 mandatory weeks for the number to be ported. Once your new phone arrives, you will just need to switch the SIM card from your current phone to the new one.
Please note: if you chose for a non-standard phone, you will need to configure it manually for data traffic and tethering (if applicable).