What is a PAC code?
A PAC code (Porting Authorisation Code) is a unique nine-character code that allows you to transfer your existing mobile phone number from one network provider to another. If you are switching from Vodafone to EE, or from O2 to Three, you will need a PAC code to keep your current number. Without it, you would be assigned a brand new number when you join your new provider.
PAC codes are sometimes searched for as “pac codes”, “pack code”, “pak code”, or even “stac code” — they all refer to the same thing: the code you need to port your mobile number.
How do I get a PAC code?
Getting a PAC code is straightforward. Under Ofcom regulations, all UK mobile providers must issue a PAC code when requested. Here are the main ways to get one:
Text for your PAC code
The quickest method is to text PAC to 65075 from the mobile number you want to keep. Your network must respond with your PAC code within one minute. This works on all major UK networks including Vodafone, EE, O2, and Three.
Call your network provider
You can call your current provider’s customer services line and request a PAC code verbally. Be prepared for retention offers — your provider may try to convince you to stay.
Request online
Most networks allow you to request a PAC code through their website or app. Log into your account and look for the “switching” or “leaving” section.
Through your account manager
For business mobile contracts managed by Connection Technologies, simply contact your dedicated account manager and we will handle the entire PAC code process for you.
How long is a PAC code valid for?
A PAC code is valid for 30 days from the date it is issued. If you do not use it within this period, you will need to request a new one. The 30-day validity gives you time to compare deals and choose the right provider without pressure.
How long does it take to transfer my number?
Once you give your PAC code to your new network provider, the number transfer typically completes within one working day. During the brief switchover period (usually a few hours), you may experience a short interruption in service. After that, your old SIM will stop working and your number will be active on your new network.
What is a STAC code?
A STAC code (Service Termination Authorisation Code) is similar to a PAC code but is used when you want to cancel your contract without keeping your number. If you no longer need the phone number, text STAC to 75075 to receive your STAC code. Like PAC codes, STAC codes are valid for 30 days.
PAC code vs STAC code: what is the difference?
- PAC code — keeps your phone number and moves it to a new provider
- STAC code — cancels your contract and releases your number (you lose it)
Most people want a PAC code because keeping their existing number avoids the hassle of updating contacts, bank accounts, and business listings.
Do I need a PAC code to switch networks?
Yes, if you want to keep your existing mobile number when switching networks, you need a PAC code. This process is known as mobile number portability (MNP) and is a legal right for all UK mobile customers under Ofcom regulations.
If you are happy to get a new number, you do not need a PAC code — simply start a new contract with your chosen provider.
Can I use a PAC code for a business mobile?
Absolutely. Business mobiles use the same PAC code system as personal phones. If your business is switching providers and you need to port multiple numbers, each line will require its own PAC code. At Connection Technologies, we manage bulk PAC code transfers for businesses of all sizes, ensuring zero disruption to your team.
Tips for a smooth number transfer
- Request your PAC code before signing a new contract — have it ready so you can provide it immediately
- Do not cancel your old contract first — the PAC code process handles cancellation automatically
- Check for early termination fees — if you are still within your minimum contract term, there may be exit charges
- Back up your contacts and data — while your number transfers automatically, your data does not
- Allow one working day — plan the switch for a time when a brief service interruption will not cause problems
Frequently asked questions about PAC codes
Is getting a PAC code free?
Yes, requesting and using a PAC code is completely free. Your network provider cannot charge you for issuing one.
Can my network refuse to give me a PAC code?
No. Under Ofcom rules, your network must provide a PAC code when requested. They may make retention offers, but they cannot refuse to issue the code.
What if my PAC code expires?
If your PAC code expires after 30 days, simply request a new one using the same method. There is no limit to how many times you can request a PAC code.
Do I need to pay off my contract before using a PAC code?
Not necessarily. You can use your PAC code at any time, but you may be liable for early termination charges if you are still within your minimum contract period. Any outstanding balance will be billed as normal.
Can I keep my number if I switch from personal to business mobile?
Yes, you can port your personal mobile number to a business contract using a PAC code. This is a common request and all UK networks support it.
Ready to switch your business mobiles?
Whether you are moving one phone or an entire fleet, Connection Technologies makes switching simple. We compare deals from all major UK networks, handle the PAC code process, and ensure your team stays connected throughout. Get your free business mobile quote today, or call us on 0333 015 2615.