Mobile number porting

Joining TISA & Want to Keep Your Number?

Bring the number everyone knows straight over to TISA. Follow a simple, regulated process and keep using your number without interruption.

See the steps Talk to us
Quick Facts
  • PAC code in 60 seconds

    Text PAC to 65075 from the number you want to keep.

  • Choose your switch date

    Pick any working day within 30 days of getting your PAC.

  • No cost & zero downtime

    We work with UK operators to keep you connected during transfer.

Port your number in three simple steps

Stay in control from request to activation. Here's what to expect.

1. Request your PAC

Text PAC to 65075. You'll get a text within a minute containing your PAC code and your account info.

Tip: Your PAC lasts 30 days. Keep the message handy.
2. Order your TISA SIM

Choose the plan that suits you and complete checkout. We'll send you a TISA SIM ready for activation.

Already have one? Jump straight to activation with your PAC.
3. Book the transfer

Submit your PAC during activation or via our support team. Pick the day you'd like the number to move across.

We'll confirm: Expect a handover text the morning of your switch.

How the transfer day works

08:00 - 11:00

Network updates start

We synchronise your profile with your previous operator and prepare both SIMs.

11:00 - 14:00

Temporary dual service

You may briefly lose service-swap in your TISA SIM when prompted via SMS.

By 17:00

Number live on TISA

We confirm completion and test incoming/outgoing calls so you can carry on as normal.

Regulated timing
  • Business hours only: Monday - Friday, 9am - 5pm (UK)
  • PAC codes remain valid for 30 days; expired codes must be reissued
  • Requests made after 4pm typically complete within two working days

Have this ready

  • Your PAC code and mobile number to transfer.
  • Account holder verification - ensure you're named on the current account.
  • The mobile number (MSISDN) you wish to port
  • Your preferred switch date within the PAC validity window.

Why customers stay with TISA

5G ready

All plans include 5G access where available.

UK support

Real people to help if anything isn't perfect.

eSIM options

Activate instantly on compatible devices.

Roam easy

Inclusive roaming in 45+ European destinations.

Frequently asked questions

Quick answers to the most common porting queries.

If we have your PAC before 4pm on a working day, the transfer normally completes the next business day. Requests after 4pm or on weekends/bank holidays complete within two working days.

There may be a short period where calls and texts pause while the number is reassigned. Have your TISA SIM ready-once inserted, service resumes on the new network.

No-using your PAC automatically tells them you're moving. They'll close the account once the number ports to TISA and send any final bill or credit.

Simply text PAC to 65075 again from the same phone. Networks must reissue a fresh PAC free of charge, valid for another 30 days.
Keep Your Number with TISA

Need a hand?

Porting shouldn't be stressful. Our UK-based team will guide you through each step and double-check your transfer date.

+44 1908 737 500 hi@tisa.one
TISA.One
9Eons Limited
Luminous House, 300 South Row
Milton Keynes MK9 2FR
United Kingdom

Still have questions?

Tell us when you'd like to move and we'll handle the rest. Reach out for personalised guidance or to schedule your port date.

Contact Support