You would like to switch to a different service provider and keep your current phone number? No problem, just take note of the following requirements for a successful mobile number portability.
1. Cancel your current contract and request immediate portability
You should end your current plan in time, so that you don’t have to pay for two phone plans. Once you have cancelled the contract, you can take your phone number to other providers even 120 days before your contract actually ends. If your contract has already ended, you can take your number to another provider within 30 days after the termination date.
Documents to send to your current provider to request the number portability before your contract has actually ended:
2. Cancel your contract and request portability after termination
If you just want to transfer your number to a different carrier after your current contract ends, you just need to send them a letter saying that you would like to retain your phone number while using a different service provider.
Documents to send to your current provider:
3. For PREPAID users: Request portability from your prepaid provider
For prepaid users it is a bit easier, you just need to send a letter of request a few days before you are ordering your new plan. Your new service provider will then request the mobile number portability from your old carrier.
Documents to send to your current prepaid provider:
4. Order your new phone plan
Look for your desired phone plan and don’t forget to inform your new carrier that you would like to retain your old number. This needs to be done within the order process. For Congstar this would look like this:
You need to select “Rufnummer sofort mitnehmen” for an immediate portability and “Rufnummer am Ende der Vertragslaufzeit mitnehmen” for a mobile number portability (MNP) after your contract ended. This should look similar for all German providers.
The cost of keeping your old phone number is usually 25€, but can not be more than 30,72€. You usually get these 25€ refunded by your new phone carrier.
Congstar offers support if you like to keep your old phone number and request MNP (mobile number portability).