Keep your number while choosing service that fits your needs. These U.S. guides cover eligibility, account preparation, provider selection, switching costs, and transfer problems. Start with the task below, or use the quick-start transfer guide and checklist farther down the page.
Check eligibility and prepare
Telephone Number Portability: Eligibility, Rights, and Limits
Check U.S. number-transfer eligibility, understand provider obligations and geographic limits, and separate porting from device setup and unpaid bills.
Prepare a Mobile Number Transfer: Account Details, PINs, and Authorization
Gather matching account records, involve the authorized account holder, obtain the right transfer credentials, and submit the intended mobile lines.
Choose service and plan the switch
Choosing a Wireless Provider: Coverage, Trials, and Everyday Use
Compare providers using your essential locations, compatible phone, repeatable call and data tests, plan terms, and support needs.
Switching Wireless Plans: Costs, Lines, and a Smooth Transfer
Compare staying and switching, account for device balances and promotions, plan family-line transfers, and review the final bills.
Resolve a stalled transfer
Cell Phone Porting Problems: Status, Rejections, and Next Steps
Identify a pending or rejected phone-number transfer, correct the right information, test completion, and prepare an actionable support record.
Quick-start guide: move your number to a new provider
This overview focuses on U.S. consumer service. Business, prepaid, landline, and VoIP accounts may require different steps.
A number transfer is not the same as unlocking a phone
Scroll sideways on a small screen to read all columns.
| Task | What it changes | What it does not establish |
|---|---|---|
| Number port | The provider serving an existing telephone number. | That your handset is unlocked or compatible. |
| Carrier unlock | A device restriction on using another carrier. | That the number has transferred. |
| SIM or eSIM activation | The credentials used to connect a device to service. | That incoming calls to your old number already route correctly. |
| Data migration | Contacts, photos, apps, and other supported data moved to a device. | That voicemail, every message, or account recovery access has followed. |
For iPhone, Apple's unlocking instructions direct you to the carrier and explain how to check Carrier Lock in Settings. An unlocked phone still needs to be compatible with the receiving network and plan. Check the exact device through the new provider's compatibility process before placing the order.
A temporary number on the new service is not necessarily a failed port. Ask which line will receive the transferred number and when that replacement should happen. Label your old and new lines clearly if both appear on a dual-SIM phone.
Prepare once, then submit one accurate request
- Check number eligibility. Ask the receiving provider to check the exact number and service type. Do not assume every landline or VoIP number can move to every provider.
- Match the existing account. Retrieve the account number and billing details from the old provider's current account record. The account number is not necessarily the telephone number.
- Obtain the right authorization. Ask whether this account needs a temporary transfer PIN, its normal account PIN, or another authorization. Confirm who is allowed to request it.
- Check transfer protection. Remove a port-out block only through the old provider's authenticated process when you are ready to proceed.
- Prepare your device and records. Have the new SIM or eSIM setup instructions, save needed voicemail, and make sure important accounts have a recovery route independent of the number being moved.
- Submit through the new provider. Specify exactly which lines to transfer and retain the order or case reference. Avoid starting competing requests while the first is unresolved.
Carrier rules are not interchangeable. For example, Verizon says its standard monthly account transfer PIN expires after seven days and can authorize multiple lines on the account. Prepaid and business processes can differ. Request your current provider's instructions rather than copying another carrier's PIN workflow.
Share a transfer PIN only through the legitimate receiving provider's process. A request from an unexpected caller is not proof that a transfer is underway. If you receive a transfer notification you did not initiate, contact your existing carrier through its known app, website, or official support channel promptly.
Use the number-transfer checklist (CSV) to track readiness, the case reference, and completed checks. Record that you obtained the PIN; do not put the PIN or account credentials into the worksheet.
When the port stalls, ask for the rejection reason
“It is still processing” is less useful than a specific status. Ask the receiving provider whether the old provider has accepted the request, rejected it, or requested corrected information. An expired authorization, a protected line, and a mismatch in account details require different fixes. Correct the identified field rather than repeatedly generating new requests.
T-Mobile's transfer documentation distinguishes wireless and landline timing and describes information validation and a possible period of dual service. Treat the receiving provider's estimate as an estimate for your particular port. Do not schedule a critical call on the assumption that every service type transfers in the same number of minutes.
If ordinary support cannot resolve a U.S. transfer problem, retain the dates, providers, case references, and stated rejection reason. The FCC's phone-complaint guidance includes number porting. Use the appropriate issue category and describe the service failure clearly; a complaint is not a guarantee of immediate restoration.
Confirm the number, the services, and the remaining bill
After the provider reports completion, test more than mobile data. Make an outgoing call and have someone call your transferred number from another network if possible. Exchange ordinary texts, check voicemail, and confirm that messaging apps use the intended number. Test with people who agree to help; do not call emergency services merely to check a port.
If messages alone are missing, investigate registration and delivery separately using Text Messaging troubleshooting. A working app chat over Wi-Fi is not a complete test of carrier SMS. Conversely, a message-registration problem does not necessarily mean the carrier port failed.
Review Wi-Fi Calling and emergency-address settings through the new provider's setup instructions. Keep another way to call during the transition. If an emergency occurs, state your location and callback number clearly; temporary routing problems can affect callbacks.
Finally, inspect the old account. Transferring one line does not settle device financing, restore lost promotional credits, or necessarily close separate watch, tablet, or other subscriptions. Verizon's port-out guide identifies remaining connected-device lines as something customers must address. Confirm the final bill and retain records before discarding the old account access.
Historical reporting on number portability
These reports describe services, predictions, and rollout events from 2003–2006. Their offers and instructions are historical; use the guides above for a current transfer.
- Wholesale SIP Gateway — March 15, 2006
- Number Portability Expansion — May 7, 2004
- Keeping Your Phone Number — November 21, 2003
- LNP : Local Number Portability — November 17, 2003
- Wireless Plans — September 30, 2003
- Local Number Portability — November 24, 2003
- Wireless Carriers — November 18, 2003
- Wireless Number Portability — November 21, 2003
- WLNP : Wireless Local Number Portability — September 25, 2003
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