How to Get a PAC Code from O2: Text, Online & Phone [2026]

Switching mobile providers doesn’t have to be complicated. If you’re an O2 customer looking to move your business numbers to a new network, you’ll need a PAC code (Porting Authorisation Code). This unique nine-character code allows you to keep your existing phone number when you switch providers — a process known as number porting.

In this guide, we’ll walk you through the three quickest methods to get a PAC code from O2 in 2026, explain exactly how long each method takes, and cover what to do if things don’t go to plan. Whether you’re porting a single handset or moving an entire fleet of business mobiles, we’ve got you covered.

What Is a PAC Code and Why Do You Need One?

A PAC code — short for Porting Authorisation Code — is a nine-character alphanumeric code issued by your current mobile provider. When you give this code to your new provider, it authorises them to transfer your existing phone number across to their network.

Without a PAC code, you’d lose your phone number entirely when switching. For businesses, losing a number can mean missed calls, confused clients, and disrupted operations. That’s why number porting is essential for any professional switch.

Key facts about O2 PAC codes:

• They are valid for 30 days from the date of issue.
• Requesting a PAC code does not cancel your O2 contract — it’s only activated when your new provider processes it.
• O2 is legally required to provide your PAC code within one working day of your request (Ofcom regulations).
• The porting process typically completes within one working day once your new provider submits the code.

Method 1: Text PAC to 65075 (Fastest Method)

The quickest and easiest way to get your PAC code from O2 is by sending a simple text message. Ofcom introduced this streamlined process to make switching networks as painless as possible.

Step-by-Step Instructions

1. Open your messaging app on the O2 mobile you wish to port.
2. Create a new text message and type the word PAC in the message body.
3. Send the message to 65075.
4. Wait for O2’s reply. You should receive a text message containing your nine-character PAC code within 60 seconds.
5. Save the code. Take a screenshot or note it down — you’ll need to give this to your new provider.

What to Expect in O2’s Reply

O2’s response will typically include:

• Your unique PAC code (e.g., ABC123DEF)
• The expiry date (30 days from issue)
• Information about any early termination fees (ETFs) that may apply
• Your remaining contract end date

Time required: Under 1 minute in most cases. This is by far the fastest method and the one we recommend for most users.

Method 2: Get Your PAC Code via the My O2 App or Online Account

If you prefer a visual, on-screen process — or if you need to request PAC codes for multiple lines on a business account — the My O2 app or the O2 website is a solid option.

Using the My O2 App

1. Download or open the My O2 app (available on iOS and Android).
2. Log in with your O2 account credentials.
3. Navigate to Account Settings or use the search function to find “PAC code.”
4. Select “Request a PAC code” from the available options.
5. Confirm your request. O2 may present you with a retention offer at this stage — you’re under no obligation to accept.
6. Your PAC code will be displayed on screen and sent via text to your O2 number.

Using the O2 Website

1. Visit o2.co.uk and sign in to your My O2 account.
2. Go to your account dashboard and look for the “Leave O2” or “Switching” section.
3. Click “Get my PAC code.”
4. Review any contract information displayed, including remaining balance and ETFs.
5. Confirm the request and your PAC code will be issued.

Time required: Approximately 2–5 minutes, depending on login speed and whether O2 presents a counter-offer.

Tip for business accounts: If you manage multiple O2 lines, the online portal is often the most efficient route, as you can request PAC codes for several numbers in one session. However, some business contract accounts may require you to contact the O2 business team directly.

Method 3: Call O2 on 202 (From Your O2 Phone)

If you prefer speaking to a human — or if the text and online methods haven’t worked for you — you can call O2 directly to request your PAC code.

Step-by-Step Instructions

1. Dial 202 from your O2 mobile. This is a free shortcode that connects you to O2 customer services. If calling from a different phone, dial 0344 809 0202 (standard call charges apply).
2. Navigate the automated menu. Select the option for “leaving O2” or “switching provider.”
3. Speak to a retention agent. You’ll likely be transferred to O2’s retention team, who may try to persuade you to stay. Be polite but firm if you’ve made your decision.
4. Request your PAC code clearly. State that you’d like your PAC code issued immediately.
5. Receive the code via text. The agent will confirm the code verbally and O2 will send it via SMS.

Time required: 10–30 minutes, including potential hold times and the retention conversation. This is the slowest method but can be useful if you have questions about your account or outstanding charges.

Important Note About Retention Offers

Whichever method you use, O2 may present a retention offer — a discounted deal designed to keep you on their network. While these can sometimes be attractive, businesses should evaluate their telecoms strategy holistically. A slightly cheaper monthly rate from O2 may not match the value of a purpose-built business mobile solution with better support, consolidated billing, and scalable features.

What to Do If Your O2 PAC Code Doesn’t Arrive

In most cases, O2 will issue your PAC code within seconds (via text) or minutes (via the app or phone). However, if your code hasn’t arrived, here’s what to do:

1. Check your text messages carefully. The PAC code SMS may have been filtered into a spam or promotions folder. Search your messages for “65075” or “O2.”
2. Wait up to one hour. Network delays can occasionally slow delivery. If the text hasn’t arrived within 60 minutes, try again.
3. Try an alternative method. If the text method failed, use the My O2 app or call 202. Sometimes one channel works when another doesn’t.
4. Check your account status. If your O2 account has been suspended, restricted, or has an outstanding debt, this may prevent PAC code issuance. Contact O2 to resolve any account issues first.
5. Contact Ofcom. Under Ofcom’s switching regulations, O2 is legally required to provide your PAC code within one working day. If O2 refuses or fails to comply, you can raise a complaint with Ofcom at ofcom.org.uk.

How to Use Your O2 PAC Code: The Switching Timeline

Once you have your PAC code, here’s how the porting process works:

Step 1: Choose Your New Provider

Before you can use your PAC code, you need an active account or order with your new mobile provider. If you’re a business, this is the time to ensure you’re getting the right package — not just the cheapest deal, but one with the support, coverage, and features your team needs.

Step 2: Give Your PAC Code to Your New Provider

Your new network will ask for your PAC code during the sign-up or activation process. Provide the nine-character code along with the O2 number you wish to port.

Step 3: Wait for the Port to Complete

Once your new provider submits the PAC code, the port will typically complete within one working day. Here’s what happens during the process:

• Your new SIM will initially have a temporary number.
• On the porting day, your old O2 SIM will stop working.
• Your existing number will transfer to your new SIM — usually within a few hours.
• There may be a brief period (typically 1–2 hours) where you cannot make or receive calls during the switch.

Step 4: Your O2 Contract Is Automatically Cancelled

You do not need to contact O2 separately to cancel your contract. Once the port is complete, your O2 account for that number will be closed automatically. However, any outstanding charges, early termination fees, or device payments will still need to be settled.

Switching Timeline Summary

O2 Early Termination Fees: What You Need to Know

If you’re still within your minimum contract term with O2, you may be subject to early termination fees (ETFs). These are calculated based on the remaining months of your contract and the monthly charges you would have paid.

Key points about O2 ETFs:

• Airtime contracts: You’ll typically pay the remaining monthly charges, though O2 may apply a discount to reflect the fact that they no longer need to provide the service.
• Device plans: If you have an outstanding device payment plan, the remaining balance becomes payable in full upon cancellation.
• Out-of-contract customers: If your minimum term has ended and you’re on a rolling monthly plan, there are no early termination fees.
• Business contracts: Business accounts may have different terms. Check your original agreement or contact O2 Business directly for precise figures.

O2 will include ETF information in the text message when they send your PAC code, so you’ll know exactly what to expect before you commit to the switch.

Why Businesses Choose Connection Technologies When Switching from O2

At Connection Technologies, we specialise in helping UK businesses transition smoothly from consumer-grade or legacy mobile contracts to purpose-built business telecoms solutions. Here’s why companies trust us with their number porting:

• Managed porting service: We handle the entire PAC code submission and porting process, so your team doesn’t have to lift a finger.
• Minimal downtime: We schedule ports to minimise disruption, typically completing transfers outside peak business hours.
• Consolidated billing: Bring all your business mobiles, landlines, and hosted telephony under one simple bill.
• Dedicated account management: Unlike the big networks, you’ll have a named contact who understands your business.
• Scalable solutions: Whether you’re porting 5 numbers or 500, our infrastructure scales with you.

If you’re also considering upgrading your business phone system, our hosted telephony solutions integrate seamlessly with business mobiles, giving your team unified communications across every device.

Frequently Asked Questions

How long is an O2 PAC code valid for?

An O2 PAC code is valid for 30 days from the date it’s issued. If you don’t use it within this window, it will expire and you’ll need to request a new one. Your O2 contract remains unaffected if the PAC code expires unused.

Does requesting a PAC code cancel my O2 contract?

No. Simply requesting a PAC code does not cancel your O2 contract. Your contract is only cancelled once your new provider successfully processes the port and your number transfers to the new network. Until that happens, your O2 service continues as normal.

Can I get a PAC code if I still owe money on my O2 device plan?

Yes. O2 cannot refuse to issue a PAC code because of an outstanding device plan. However, once you port your number away, the remaining balance on your device plan becomes payable. O2 will send you a final bill that includes any outstanding device payments.

What’s the difference between a PAC code and an STAC code?

A PAC code (Porting Authorisation Code) lets you keep your phone number when switching networks. An STAC code (Service Termination Authorisation Code) cancels your O2 contract without transferring your number — meaning you’ll lose the number entirely. Only request an STAC if you genuinely don’t want to keep your number. For businesses, a PAC code is almost always the right choice.

Can I port multiple O2 business numbers at once?

Yes. If you’re managing a business account with multiple lines, you can request PAC codes for each number individually via text (from each handset) or in bulk through the O2 Business portal. For large-scale porting, working with an experienced provider like Connection Technologies is the most efficient approach — we can coordinate the entire process on your behalf. Contact us to discuss bulk porting.

Will I experience any downtime when porting my number from O2?

There is usually a brief period of downtime — typically between 30 minutes and 2 hours — during the actual port. During this window, you may not be able to make or receive calls or texts. Connection Technologies works with you to schedule ports at the most convenient time, minimising any impact on your business operations.

Ready to Switch? Let Connection Technologies Handle It

Getting a PAC code from O2 is straightforward — the text method takes less than a minute, and you’ll have your code in hand almost instantly. But choosing the right provider to switch to is the decision that really matters for your business.

Connection Technologies provides tailored business mobile, hosted telephony, and IT solutions designed specifically for UK businesses. We’ll manage the porting process from start to finish, ensure zero disruption, and deliver a telecoms solution that genuinely supports your growth.