Port Your Number to SecondSim

Q: Do I need to buy a SecondSim plan before I can port my number?

Yes, you must purchase a SecondSim plan and activate your eSIM before you can request a number port. The transfer process works by applying your old number directly onto your active SecondSim eSIM line, replacing the temporary number that came with your purchase. We cannot initiate a transfer through Ofcom without an active target SIM card.

Q: How long does it take to port a number?

Number porting takes one working day under Ofcom rules, provided your request is submitted before 5:00 PM Monday through Friday. Transfers do not run on weekends or UK Bank Holidays.

Q: Will I lose signal during the transfer?

No, you will not experience major signal downtime. We guarantee zero signal downtime on your primary line during the transfer. Your old SIM card remains fully active up until the exact moment of the port. On the day of the transfer, your old provider's signal will disconnect, indicating the port has completed. You then restart your phone, and your ported number will be live on your SecondSim eSIM. The actual transition takes only a few minutes.

Q: Does porting cancel my old contract?

Yes, porting your number automatically cancels your old mobile contract. Under Ofcom's Text-to-Switch regulations, the completion of the number port triggers the immediate cancellation of your line with your previous network provider. You do not need to call them to cancel, but you will receive a final bill for any outstanding balances or early termination fees if you are mid-contract.

Q: Can I port a VoIP or landline number?

No, landline and standard VoIP numbers cannot be ported using a PAC code. Ofcom's PAC code system only applies to mobile-to-mobile number portability. If you wish to port a UK landline, virtual number, or VoIP number (such as Skype or Vonage) into SecondSim, please contact our support team to request a manual porting assessment.

Want to keep your existing UK mobile number? No problem. SecondSim fully supports mobile number portability (MNP) under Ofcom switching regulations. You can transfer your number from any UK network (including EE, O2, Vodafone, Three, Giffgaff, Tesco Mobile, Sky, and more) to your SecondSim business eSIM for free, with zero signal downtime and zero hidden fees.

How to Port Your UK Mobile Number to a SecondSim eSIM

Buy SecondSim Plan

Choose a subscription and install your new SecondSim eSIM. You will get a temporary active number immediately to initiate the port.

Select a Plan Below →

Get Your PAC Code

Text the word PAC to 65075 from your old SIM (free & instant). Under Ofcom regulations, your old carrier must text you back your 9-character code within 60 seconds.

Submit in Dashboard

Log in to your secure SecondSim dashboard, select "Bring your number" on your active line card, and enter your old number and PAC.

New to SecondSim?

Step 1: Purchase Your eSIM First

Under Ofcom rules, your number must be ported onto an active line. Choose a plan below to get your SecondSim eSIM in 2 minutes, then submit your PAC in your new dashboard to transfer your number for free.

Flex (Monthly)

Pay as you go, cancel anytime.

£5.99 / month

Get Monthly

Save 11%

Quarterly

Balanced choice, lower admin.

£15.99 / 3 months

Get Quarterly

2 Months Free

Yearly

Best value, complete peace of mind.

£59.99 / year

Get Yearly

Zero Signal Downtime Guarantee

Your old SIM stays 100% active until the second the transfer completes. Never miss a client call.

7-Day Money-Back Guarantee

Try SecondSim risk-free. If WhatsApp verification fails or you are unsatisfied, get a full refund.

Already have an active SecondSim eSIM?

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Want to manage work/life balance?
Read our guide on Mastering Business Calls & SMS to learn how to identify business calls and switch off on weekends.

Port Your Number Out from SecondSim

We're sorry to see you go, but we believe in making this process as simple as possible. You can take your SecondSim number with you to any other UK provider.

How to get your SecondSim PAC Code

Just like any other UK provider, we follow Ofcom's simple "Text to Switch" process.

From your SecondSim number, text PAC to 65075.
We will text you back instantly with your PAC code.
Give this PAC code to your new provider, and they will manage the transfer.

That's it. Your PAC is valid for 30 days, and your SecondSim subscription will be cancelled automatically once the number successfully ports out to your new carrier.

Frequently Asked Questions

Everything you need to know about porting your number to SecondSim via PAC code.

What is a PAC code and how do I get it?

A Porting Authorisation Code (PAC) is a free 9-character code (formatted ABC123456) that authorizes the transfer of your mobile number between networks. To obtain it under Ofcom regulations, text PAC to 65075 from the mobile number you want to keep. Your current provider (e.g., EE, O2, Vodafone, Three, Sky, or Tesco Mobile) must reply instantly via SMS with your code. The code remains valid for 30 days.

Do I need to buy a SecondSim plan before I can port my number?

Yes, you must purchase a SecondSim subscription plan and activate your eSIM before requesting a port. The porting process works by transferring your old number directly onto your active, temporary SecondSim eSIM line, overriding the temporary number. We cannot initiate an MNP transfer request with Ofcom without an active target eSIM in your account.

How long does it take to port a number?

Number porting takes exactly one working day under Ofcom regulations, provided your PAC code is submitted before the 5:00 PM cutoff. UK mobile number transfers do not process on weekends or Bank Holidays. Refer to the table below to see when your number transfer will complete depending on your submission day and time:

Submission Day & Time	Processing Status	Transfer Completes (Ports)
Mon – Thu (Before 5:00 PM)	Processed immediately	Next Working Day (Tue – Fri)
Mon – Thu (After 5:00 PM)	Queued for next working day	2 Working Days Later (Wed – Mon)
Friday (Before 5:00 PM)	Processed immediately	Monday (Next Working Day)
Friday (After 5:00 PM)	Queued on Monday	Tuesday (2 Working Days Later)
Saturday or Sunday (Anytime)	Queued on Monday	Tuesday (2 Working Days Later)

Will I lose signal during the transfer?

No, we guarantee zero signal downtime on your primary number during the transfer. Your previous network's SIM card remains fully operational until the exact second the port takes place. On the designated transfer day, your old provider's SIM will lose signal. When this happens, simply restart your device, and your ported number will be active on your SecondSim eSIM. The physical transition takes only a few minutes.

Does porting cancel my old contract?

Yes, completing a number transfer automatically cancels your previous mobile line. Under Ofcom rules, the successful porting of your mobile number acts as an immediate cancellation of service with your old provider. You do not need to contact them. However, they will issue a final bill to cover any outstanding usage up to the transfer day, or early termination fees if you are under contract.

Can I port a VoIP or landline number?

No, PAC codes only apply to mobile-to-mobile number transfers. Ofcom's text-to-switch system is built exclusively for mobile networks. If you have a UK virtual number, standard VoIP line (e.g., Skype, Vonage), or landline that you want to port into SecondSim, please contact our support team to request a custom manual porting review.