Wireless Number Portability (WNP) is a free service that allows you to bring your phone number with you when switching phone service to Metro by T-Mobile. To start the WNP process, you’ll need an active mobile phone or landline number. You’ll also need a phone bought at Metro, or you can bring an unlocked phone to your local Metro store. Make sure you haven’t cancelled your old service; you’ll need an active phone number to make the transfer. You may also need to take any locked smartphone to your current carrier to have it unlocked. If your phone is unlocked, it means your current carrier doesn’t have any restrictions keeping you from porting your phone number to a new carrier.
To port a mobile phone number typically takes less than 10 minutes, while a landline can take three to five days. Once you set up a Metro account, while waiting for full number portability, you can begin texting and placing calls right away, but your phone may not be able to receive calls immediately.