Your phone number is protected by federal portability rules — you own the right to take it anywhere. The method: sign up with the new carrier first and request a port using your account number and transfer PIN. Never cancel old service beforehand; a completed port cancels it automatically. Wireless ports finish in hours; landlines take days.
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Local Number Portability regulations obligate carriers to release your number to any competing provider upon your verified request. The carrier owns no claim to the digits themselves — only to any outstanding device balances on your account. Porting is free or carries a nominal fee (commonly $0–$20) charged by either side.
Exact Mechanics
- Collect: account number (bill/app), transfer PIN (generated fresh inside most carrier apps), service ZIP code as billed.
- Initiate from the NEW carrier: during checkout choose "bring my number." They submit the port request to the old carrier — you never negotiate with the old one.
- Await the cutover: your old SIM goes dark mid-process. Insert/activate the new SIM or eSIM immediately afterward.
- Verify: inbound calls, outbound calls, texts, and voicemail. Then close out the old account's autopay.
The golden rule bears repeating: a completed port IS your cancellation. Cancelling manually first releases the number to a quarantine pool where it's usually unrecoverable.
Why Ports Get Rejected (and Fixes)
| Rejection reason | Fix |
|---|---|
| Name/address mismatch | Copy details verbatim from your latest bill |
| Wrong or expired PIN | Generate a fresh transfer PIN moments before submitting |
| Outstanding equipment balance | Pay down or port after settlement |
| Frozen account/fraud hold | Call old carrier to unfreeze before retrying |
If a port stalls past one business day, escalate: the new carrier's port desk can resubmit, and unresolved disputes go to the FCC's consumer complaint portal.
Special Numbers, Special Rules
Certain numbers deserve extra care during ports. Business lines should port during off-hours with auto-attendants updated simultaneously — an hour of misrouted customer calls costs more than any plan saving. Numbers tied to two-factor-heavy accounts benefit from a "port window": update banks and services BEFORE moving, then verify code delivery after. Vanity/legacy numbers (decades-old digits, marketing-printed contacts) justify white-glove handling: request supervisor-monitored ports and written confirmation timelines.
Toll-free numbers follow entirely separate porting processes through SMS/800 databases — budget extra days and use providers experienced with them rather than assuming mobile-port mechanics apply.