# Bring an existing mobile number

You need an eligible number, a supported receiving mobile plan and authorization from the account holder. Confirm the requirements for the actual donor and receiving providers.

## 1. Check eligibility

Verify the country, number type and supported provider path. Explain the expected procedure before the subscriber commits to a move.

## 2. Collect the required details

Obtain the account information, transfer credentials and consent required for this path. Match the donor’s account records and explain how the subscriber can resolve missing information.

## 3. Submit and track

Keep the request reference and follow the reported status. Show a confirmed schedule when one is available. Do not tell the subscriber to cancel the donor service before the porting process permits it.

## 4. Resolve a declined request

Read the reported reason and request the specific correction. Resubmit through the supported process after the authorized subscriber updates the required information.

## 5. Verify the moved service

Confirm the new line and test incoming and outgoing calls, SMS and data as applicable. Explain any remaining relationship or final bill with the previous provider.

## Troubleshooting

A porting completion status and a working customer experience are separate checks. If calls or messages fail after the move, retain the port reference and test results for the receiving service’s support team.

## Next steps

- [Bring an existing mobile number with Bird](/products/esim/number-porting)
- [eSIM resource library](/products/esim/resources)
- [Get started with eSIM](/products/esim/getting-started)

## Related resources

- [What is an eSIM?](/explained/esim/what-is-an-esim) (answer)
- [eSIM](/products/esim) (product)
- [eSIM connectivity guide](/docs/guides/esim/overview) (docs)

[Get an implementation brief](/learn/workspace?topic=esim)