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How to Switch to Giffgaff and keep your number
You can easily switch to Giffgaff and keep your existing mobile number, a simple process that only requires a PAC code. When you are ready to switch to Giffgaff, you simply need to request this short code from your current network, order your new SIM, and submit your details online. In 2026, this entire process is highly streamlined, allowing you to move over quickly without experiencing any major disruptions to your daily mobile service.
What is a PAC Code?
A PAC (Porting Authorisation Code) is a unique sequence of letters and numbers that allows you to move your existing mobile phone number from one network provider to another. This code is absolutely essential if you want to keep your old number when you switch to Giffgaff. Obtaining this code from your current provider is the crucial first step in the switching process, clearing the way for a smooth and straightforward transfer.
Step-by-Step Guide to Switch to Giffgaff
To switch to Giffgaff, you need to follow these three steps. The entire process to switch to Giffgaff is designed to be user-friendly, ensuring you do not lose your number or suffer long periods of network downtime.
Step 1: Request a PAC Code from Your Current Provider
You can get your PAC code quickly by texting the word PAC to 65075 from your current mobile phone. This free service works seamlessly whether you are planning to switch to Giffgaff from O2, EE, Vodafone, or Three. Your current network provider will reply with a text containing your code and any important final billing information.
Step 2: Order and Activate Your Giffgaff SIM or eSIM
Next, you need to order your new standard physical SIM or opt for a digital eSIM through the official website. Once your physical card arrives, you must complete the Giffgaff activate SIM process online. You can do this by navigating to the giffgaff.com activate page and entering the unique activation code found on your packaging. To purchase a plan for your new Giffgaff connection, you can top up securely through the platform. In 2026, if you are searching for how to activate a Giffgaff SIM without topping up, be aware that you generally need to buy at least a minimum data plan or top-up credit to fully trigger the network connection and allow the number transfer to proceed.
Step 3: Enter Your PAC Code on Giffgaff.com
If you are wondering where to enter your PAC code, the process takes place entirely online. Log into your newly created account on the official website and navigate to the number transfer page. Here, you will type in your PAC code and select a preferred transfer date from the available options provided on the screen.
Transferring Your Number to Giffgaff
After you submit your PAC code online, your number transfer is officially scheduled. A Giffgaff number transfer usually takes place on the next working day, provided you submit your request before the afternoon cutoff time. On the actual day of the transfer, you will briefly lose mobile signal on your old network. When this happens, simply remove your old SIM and insert your new one. You may need to restart your phone a few times throughout the day until you see a signal bar appear indicating the process is finished.
Managing Your New Giffgaff Account Settings
Once your switch to Giffgaff is complete, you will need to familiarise yourself with the basic settings on your new account. Through your online dashboard or mobile app, you can easily track your data usage, set up recurring monthly plans, and adjust your personal communication preferences.
How to Switch Giffgaff Voicemail On and Off
To switch Giffgaff voicemail off, you must dial 1626 from your mobile phone. If you ever decide you want to turn your voicemail back on to receive messages, simply dial 1616. Both of these shortcodes are completely free to use and apply your changes instantly to your active line.
Frequently Asked Questions (FAQ)
Below are a few common questions you might have when managing your new connection or adjusting your account details.
How do I get a PAC code from Giffgaff to leave?
If you ever decide to move to another network, making a Giffgaff PAC code request is incredibly straightforward. You can either text the word PAC to 65075 from your mobile phone or request the code directly through your online account profile under the settings menu.
Why is Giffgaff not working or showing no service?
If your phone is showing no service, it could be due to a few common reasons. There might be a temporary SIM activation delay if you have only just completed your setup, local mast maintenance in your specific area, or wider O2 network outages, as the service runs directly on O2 infrastructure.
What is the Giffgaff customer service phone number?
Giffgaff does not have a traditional customer service phone number (like an 0800 number). Instead, all customer support is handled entirely online. You can get professional help by messaging dedicated community agents through your dashboard or by asking questions in the active user support forums.
Should I switch to Giffgaff in 2026?
Yes, choosing to switch to Giffgaff in 2026 remains a brilliant option if you want flexible, contract-free mobile plans. The provider offers highly competitive Pay As You Go rates, generous SIM-only data deals, and reliable nationwide coverage powered by the main O2 network.
How do I change my Giffgaff number without a PAC code?
If you do not want to transfer an old number and simply want a brand-new one, you can easily change your number directly through your profile settings. You do not need a PAC code for this process; simply log into your account, navigate to the specific option to get a new number, and confirm the change permanently.