Firstly this
You can decide to have your number ported immediately or to have it done on a date you agree upon with the new operator.
Setting a date can be important if you are still bound by a contract or if there are instalments left on a device. Without an agreement on the porting date you risk having to pay a termination fee to your old operator.
One working day
Following a visit to your new operator’s store or website or before the porting date set, the new operator checks with the old operator whether everything is technically ready to port the number.
After the technical validation the number porting takes one working day at the most.
What if there is a delay?
If the porting exceeds one working day compared to the date set, you are entitled to a compensation of 3 euros per day of delay. Sometimes the amount is set to 5 euros per day of delay.
Always ask your new operator for this compensation. Even though you know or suspect that the problem lies with the old operator.
Do this within 6 months following the number porting.
In the case of prepaid cards a compensation can be given in the form of extra call credit.