Number Porting
Short answer: Number porting (local number portability) is the process of moving an existing phone number from one service provider to another so you keep the same number. Regulators such as the FCC require carriers to allow porting, and most countries have similar rules.
Porting is common when switching mobile carriers or moving a business line to a VoIP provider, and it usually requires matching account details from the current provider.
How it works
- You request a port with the new provider, supplying account number, PIN and name exactly as the old provider has them.
- The new provider sends the port request to the current provider for validation.
- Routing databases are updated so calls and texts reach the new provider.
- The old service ends for that number.
What can delay or block a port
- Mismatched details: the name, address, account number or PIN on the request differs from the losing provider's records.
- Unpaid balances or contract terms on the old account.
- Coverage limits: the new provider must be able to serve that number type in that area or country.
- Number type: mobile, geographic and toll-free numbers often follow different porting rules.
- Cancelling too early: closing the old account before the port completes can release the number for good.
Porting in vs porting out vs getting a new number
Porting moves an existing number, while a new number is simply assigned from the provider's own inventory.
| Option | What happens | Typical trade-off |
|---|---|---|
| Porting in | An existing number moves to the provider you are joining | Keeps the number but depends on the old provider's validation |
| Porting out | A number leaves your current provider for another one | Ends your service for that number at the old provider |
| New number | A fresh number is assigned by the provider you sign up with | No transfer paperwork, but contacts must learn the new number |
Does Smart Messaging offer it?
No. Smart Messaging does not offer number porting in either direction. You pick a new real number (mobile, local or toll-free) in any of 181 countries, most numbers activate within minutes of payment, and you keep it for as long as the plan renews.
How it applies to Smart Messaging
Number porting is not offered by Smart Messaging, either into or out of the service. Instead, you choose a new real number in any of 181 countries, and it stays yours while your plan keeps renewing.
Related terms
- DID
- Mobile number
- Local number
- E.164
Frequently asked questions
How long does porting take?
It varies by country and carrier, from same day to several weeks.
Can I port my number to Smart Messaging?
No, porting in or out is not offered; you get a new number instead.
How do I keep a Smart Messaging number long term?
Keep your plan renewing from your wallet; a 7-day grace period applies if a renewal can't be charged.
Does porting keep my WhatsApp or other app accounts?
Apps are tied to the number, so they keep working after a successful port.
Can every number be ported?
No. Portability depends on national rules, the number type and whether the new provider can serve that number.
Should I cancel my old service before porting?
No. Keep the old account active until the port completes, because cancelling first can release the number.
Related pages
- DID numbers
- mobile numbers
- E.164
- keep a WhatsApp number long term
- temporary vs permanent numbers
- pricing
- Non-VoIP Number
- OTP (One-Time Password)
Sources
- FCC: Keeping Your Telephone Number When You Change Your Service Provider (as of September 2026)
- Wikipedia: Local number portability (as of September 2026)