Get the most relevant help
We’re making some changes to our website. By checking your O2 mobile number, we can direct you to the most relevant information for your account.
Check my number
Check your O2 mobile number
If you’re switching to O2 from another network, and you want to keep your mobile number, you’ll need to ask your old network for a PAC (Porting Authorisation Code).
You can get your PAC by texting PAC to 65075 from the number you want to keep and following the simple steps. You'll get your PAC within 60 seconds. Or you can contact your current provider.
Already switched to O2 or left your previous network provider and decided to keep your previous number? You can still request a PAC code by contacting your previous network provider.
You have up to 30 days from when you left your previous network provider to request your PAC. You have an additional 30 days to provide us with your PAC code.
- How do I use my PAC code?
We’re making some changes to improve your experience. So, you may notice some improvements and differences in My O2 and with some of your journeys.
To ensure you get access to the information most relevant to you:
- Click 'Check my number' in the orange box at the top of this page.
- Insert your mobile number.
- Click 'Confirm'.
- How do I use my PAC code?
You can give us your PAC code when you order your new O2 connection or at any time afterwards.
- How do I use my PAC code?
You can give us your PAC code when you order your new O2 connection or at any time afterwards.
Log in to My O2to transfer your current mobile number to your new O2 connection.
- In My O2 web: Go to the menu and select ‘Switch to O2’ and then ‘Move my number’.
- On the app: Go to ‘Support’, and then ‘Keep your number’.
- How long does it take to switch?
Once you've submitted your request to switch your mobile number to O2, we'll aim to have you moved over the next working day. If you submit your request after 6pm, over the weekend or on a bank holiday, it can take two working days to move you across.
If you submit your request before 6pm
Day of request Expected day of switch to O2 network Monday Tuesday Tuesday Wednesday Wednesday Thursday Thursday Friday Friday Monday Saturday Tuesday Sunday Tuesday
If you submit your request after 6pm
Day of request Expected day of switch to O2 network Monday Wednesday Tuesday Thursday Wednesday Friday Thursday Monday Friday Tuesday Saturday Tuesday Sunday Tuesday
- Can I switch my number to O2 at any time?
Yes you can. Just provide us with the number you want to switch and a valid PAC.Find out how to give us your PAC.
- What else do I need to do to switch to O2?
The first thing to do is ensure your O2 sim is activated. You can do this by inserting your new O2 sim into your handset and allowing it to connect to the O2 network. You can use your O2 sim immediately or wait until your original number is switched over.
To complete the switch to O2, you must be in the UK on the day of the planned switch.
- What happens during the switch to O2?
On the day of the switch, we’ll update your temporary O2 number to the number you want to keep. Until the switch takes place, you can continue to use your new O2 sim with a temporary number or your sim from your original network.
You’ll lose service on your original network when the switch takes place. The number you wanted to keep is now live on the O2 network. If you haven’t already, place your O2 sim in your handset, and you’re ready to go. Switching usually happens by 4pm but can take up to 10pm. Loss of service is minimal, but if you do lose service, you’ll be back up and running by 10pm.
We’ll be in touch via SMS if there are any issues with your switch, for example, if your PAC has expired.
- What happens if it takes longer to switch?
We're committed to ensuring you experience the smoothest possible switching journey from the moment you request your PAC/STAC code or Switching Information until the successful completion of your switch.
If we can't switch you on the day we told you we would, you'll be entitled to compensation. You don't need to do anything. We'll contact you within 30 days of the completion of the switch to notify you of the compensation.
If something goes wrong and we don't get in touch, you may be able to claim compensation by contacting us. Our contact details can be foundhere. If you're registered for our Access for You service, you can find our contact detailshere. You'll have up to 60 days from the issue date to claim your compensation.(Video) How to Switch Carriers | Keep Your Phone AND Your Number
We’re sorry you’re thinking of switching. We’re here if you’d like to discuss your options or hear about any offers – just give us a call on 202, free from your O2 phone.
Remember that if you’re on O2 Refresh, including our custom plans, you can change your phone or tariff whenever you like.
Find out more aboutLeaving O2.
- How do I check if there’s anything to pay on my account?
If you’d like to know whether there’d be anything to pay if you switched, or what your credit balance is if you’re on Pay As You Go, you can get an estimate of any charges or credit by calling on 202, signing in toMy O2, or texting INFO to 85075.
Depending on what type of plan you’re on, you may incur early termination charges. Find out more about whether this would affect your contract atLeaving O2.
- How do I get a PAC or STAC code?
If you decide to switch to another network, you’ll need to request a PAC code if you want to keep your phone number, or a STAC code (Service Termination Authorisation Code) if you’d like a new number.
You can request your code by giving us a call on 202, signing in to My O2, or:
- Texting PAC to 65075, for free, if you want to keep your phone number
- Texting STAC to 75075, for free, if you don’t want to keep your phone number.
You should receive your PAC or STAC code within 60 seconds.
If you have multiple numbers on your account, or if you have an Apple Watch on a Pay Monthly plan, you won’t be able to use the text service. You’ll need to sign in toMy O2, orgive us a callto request your PAC or STAC code. If you want to switch more than 24 numbers at a time, we’ll be able to help you on the phone or you can make more than one request inMy O2.
If you want a PAC code, you’ll need to be in the UK to request it. You’ll get it in 60 seconds.
Your PAC code should be retained in your text messages, however if you lose your PAC code you can also get it fromMy O2or bygiving us a call.
You can give the same PAC or STAC code to multiple networks, if you’re switching to more than one.
If you've already switched or left O2, you can request a PAC code by calling us on0344 809 0202.
You have up to 30 days from when you leave O2 to request a PAC code from us, and it will be valid for an additional 30 days from the date of issue.
- I still have credit on my Pay As You Go account. What can I do?
If you have any credit or outstanding allowance when you complete your switch, you can request to receive a refund either via bank transfer or via a cheque. Please call O2 on202, free from your O2 phone or on0344 809 0202from any other phone to process your refund.
Switching from O2 Pay As You Go to Pay Monthly
If you switch from Pay As You Go to a Pay Monthly tariff, we will send you a new sim with a new phone number.
If you want to keep your original number, we can arrange this. You’ll need your new Pay Monthly phone number from your O2 confirmation email or sim pack.
- You can fill in our online form:Switch your number to Pay Monthly.
- Or call us on202, free from your O2 phone, on0344 809 0202from any other phone, orvisit an O2 store.
- How long does it take to switch?
We’ll transfer your number within one working day (Monday-Friday, 9am-5pm, excluding bank holidays).
If we receive your code after 5pm, you’ll switch within two working days.
- What can I expect when the switch happens?
On the day of the switch, your Pay As You Go sim will lose signal. When this happens, put your Pay Monthly sim in your phone. If you don’t have signal, switch your phone off and on every couple of hours until you get a signal. If you still don’t have signal by 6pm, get in touch with us.
Texts and picture messaging can take up to 24 hours to work after the switch.(Video) How to keep your current mobile number | giffgaff
- What happens to my Pay As You Go balance?
Your Pay As You Go balance will be transferred to your Pay Monthly account when you receive your second bill.
If you’re entitled to a loyalty bonus, up to £550, we’ll add credit to your fourth bill.
Switching from O2 Pay Monthly to Pay As You Go
If you want to switch from a Pay Monthly to Pay As You Go, we can take care of moving your number and even arrange for your new Pay As You Go sim.
Get in touch by calling us on202, free from your O2 phone, or on0344 809 0202from any other phone. We’ll do the rest.
- Is there anything to pay on my device plan?
If you’re on O2 Refresh, you can only move to Pay As You Go once your Device Plan is paid.
If you’re not on O2 Refresh but still within your contract’s minimum term, you might need to pay a termination charge, and our Customer Service team can talk this through with you.
You’ll receive your final Pay Monthly bill 14 days after you move to Pay As You Go, and you’ll need to settle any outstanding balance.
Swapping your O2 sim
If you’re just changing or replacing your sim and want to move your mobile number across to your new sim, you can do this inMy O2.
If you’re an O2 Business customer, please sign in toMy O2 Businessto swap your sim.
If you haven’t already got a replacement sim, you can request one by calling us on 202,starting a webchat, orvisiting an O2 store.
- How long does it take to swap?
Sim swaps can take up to 24 hours to complete.
Once you lose signal with your original sim, turn your device off and turn it back on. If you’re using a plastic sim, pop it in your device. Wait till you see your network appearing on your device.
Changed your mind?
If you’ve changed your mind about transferring your number, get in touch with us and we’ll be happy to help.
Are you a VIP customer?
If you're a VIP customer, you will need to call your dedicated Customer Service team to discuss keeping your number. Please find more information below.
- Joining O2
If you're switching to O2 from another network and want to keep your mobile number, you'll need to ask your old network for a PAC (Porting Authorisation Code).
You can get your PAC by texting PAC to 65075. You'll get it in 60 seconds. Alternatively, you can contact your current provider.
How do I use my PAC code?
You can give us your PAC code when you order your new O2 connection or at any time afterwards. To do this, please contact your VIP personal Customer Service team.
- Leaving O2
We’re sorry you’re thinking of switching. We’re here if you’d like to discuss your options or hear about any offers – just give your VIP personal Customer Service team a call.
Find out more about Leaving O2.
How do I check if there’s anything to pay on my account?
Please contact your VIP personal Customer Service team if you'd like to know whether there'd be anything to pay if you switched. Depending on what type of plan you're on, you may incur early termination charges.
Find out more about whether this would affect your contract at Leaving O2.
How do I get a PAC or STAC code?
If you decide to switch to another network, you’ll need to request a PAC code if you want to keep your phone number or a STAC code (Service Termination Authorisation Code) if you’d like a new number.
You can request your code by calling your VIP personal Customer Service team,signing in to My O2, or:
- Texting PAC to 65075 for free, if you want to keep your phone number
- Texting STAC to 75075 for free, if you don’t want to keep your phone number.
You should receive your PAC or STAC code within 60 seconds.
If you have multiple numbers on your account you won’t be able to use the text service. You’ll need to contact your VIP personal Customer Service team orgo to My O2.(Video) Switch to T-Mobile: How to Keep Your Number & Bring Your Phone | T-Mobile
If you've already switched or left O2, you can request a PAC code by calling your personal Customer Service team. You have up to 30 days from when you leave O2 to request a PAC code from us, and it will be valid for an additional 30 days from the date of issue.
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Can't find what you're looking for?
Contact the carrier's customer support. Call or drop by to any available service centers of your carrier and ask about their procedures on how you can keep your number. Mobile network carriers each have their own policies on the matter, so make sure to contact your customer's support.How do I buy a new phone and keep the same number? ›
- Text your current provider to request a mobile PAC code. A PAC code should be given to you immediately over the phone or within two hours by text. ...
- Contact your new network and give them the PAC code. ...
- Check the SIM works in your phone and the new number has ported across.
Keeping your phone number when you change network is known as porting your number, and to do this you need a porting authorisation code - or PAC code. You give this code to your new provider and they handle the transfer of your number as well as the cancellation of the service from your current provider.Can I keep my phone number without a plan? ›
Under FCC regulations, you have the right to keep your cell phone number (it doesn't belong to your carrier). So a carrier is required to relinquish your cell phone number to you if you so request.Can a cell phone carrier keep your number? ›
If you're switching service providers and remaining in the same geographic area, you can keep your existing phone number. This process – often referred to as phone number porting – can be done between wireline, IP and wireless providers.How long does it take for a number to transfer to a new SIM? ›
Phone number transfers normally take place on the next working day after you submit your PAC Code (or two working days if you submit the PAC Code late in the afternoon or evening). † You'll need to submit your PAC Code before the daily cut-off time (between 3pm and 5.30pm depending on your network).Can I keep my same phone number if I get a new SIM card? ›
Yes. Replacing your SIM, you can keep your same number. Just request that when getting the replacement SIM and have them activate it with your number or send it to you unactivated and then call Customer Care to have it activated with the number on the phone that is lost.Can I transfer my mobile number to the same network? ›
While it is a much simpler process to transfer your number when moving to a new network, it is not entirely impossible when staying with the same provider. In order to retain your phone number while moving to a new tariff on the same network you will need to negotiate a contract upgrade with that network.Can I transfer my phone number myself? ›
Yes. Generally you are allowed to port your number to a new provider even if you still owe your current one, but you may have to pay off the bills from your old provider before you can cancel your account.Can I port my number myself? ›
You can port existing numbers by yourself by providing your current and new provider with notice of your intention to port your existing number when you switch services. You will also need to supply your new provider with all the information they need to apply your phone number to your new account.
For security purposes all cell phone carriers require you to provide your current account number, your current account PIN/Passcode (this is not necessarily the same as the password you use to login to your account online), and your current phone number when trying to “port” or transfer your number to a new carrier.Why didn't my phone number transfer? ›
The most common reason a carrier rejects your number port comes down to a basic data mismatch. They have one name and address, and you supplied them with something just a little bit different. When you submit a Letter of Authorization (LOA), the data it contains need to match that on the Customer Service Record (CSR).Do I have to cancel my phone plan before switching carriers? ›
Don't cancel your current phone plan before switching
Your current phone plan must be active in order for you to port your number over. If you can, don't cancel your current plan before you've initiated the process of signing up for a new phone plan.
Once you have cancelled your service, you are returning your phone number to the carrier. You will no longer own that number. You won't be able to transfer it. Think of it like a car.Can I text without using my phone number? ›
The simple answer is yes. But to send an anonymous text, you'll need to use a third-party service, whether it's a VoIP service, an app or a website. When you send a text normally, the message is sent in one or more digital “packets,” along with information about the number it was sent from and to.How can I change my phone carrier without paying? ›
What you'll need to do is pay off your phone before you make the jump to another provider. Depending on whether you're on a contract or a monthly plan, you may be responsible for paying termination fees. However, your new carrier may offer to cover those for you.Does a SIM keep your number? ›
Whether you want to switch from a physical nano-SIM card to an eSIM or an eSIM to another eSIM, you will need to port your mobile number. Mobile Number Portability (MNP) involves transferring a phone number from one mobile network to another, or in this case, from a SIM card to an eSIM.Can a phone company take away your phone number? ›
Phone companies are required by law to port your number out when you start service with a new carrier. According to the FCC, a company can't refuse to port your number even if you have an outstanding balance or unpaid termination fees.Can I switch from Verizon to AT&T and keep my number? ›
Change your carrier and keep your number
The good news is that you'll usually be able to keep your current phone number. Just let us know at checkout and we can work with your current wireless carrier to get your number moved. If you're shopping online, you can also select the “Keep my number” option at checkout.
Your old SIM card will stop working once the number has transferred. You may at the same time briefly lose service with your new card. The easiest way to be certain that your old number is up and running on your new network though is to put your new SIM card in your phone and get someone to call you.
What does a PAC code do? A Porting Authorisation Code (PAC) allows you to take your old number with you when you change service providers. You'll be asked for your PAC when you want to transfer your number either to us from your old provider or from us to a new provider.How long does it take to port a number? ›
The industry average for porting a number is 7 to 10 days. The actual time it takes is dependent on a few factors.Does porting a number cost money? ›
Porting your number to Jio is absolutely FREE.What are the rules for porting phone numbers? ›
In order to port your number, you need to prove that you own the number. That means you will most likely have to provide your account number with your current carrier. You'll also need your full name and address. They may need your service address for a landline as well as your billing address if the two are different.Is there a time limit to port a mobile number? ›
You are allowed to move to another mobile service provider only after 90 days of the date of activation of your mobile connection or from the date of last porting of your mobile number, which ever is applicable.Who is the #1 cell phone carrier? ›
With an extensive national network, Verizon is the leading wireless provider. It receives top scores for network coverage, speed, and reliability. Verizon's plan and device flexibility, combined with excellent business features, makes it the clear winner in our best overall cell phone provider category.Will my carrier know if I switch phones? ›
Once your service is active and your number has been transferred, your new carrier will let you know. Meanwhile, the number transfer will automatically cancel your old service in most cases. After you're up and running, we suggest that you call your old cell phone company to confirm the cancellation.Which carrier is the best for iPhone? ›
- Verizon: 70% 4G cell phone coverage.
- AT&T: 68% 4G cell phone coverage.
- T-Mobile: 62% 4G cell phone coverage.
- Know when your phone number was deactivated.
- Attempt to call/contact the number.
- Contact your service provider.
- Request a reactivation of your old phone number.
- Wait for your provider to reactivate the number.
All carriers allow you to bring your digits with you—a process called "porting" your phone number. To a new cell phone provider and keep your number: Contact your current carrier to unlock your phone. Choose a new phone plan.
Sometimes, a number simply can't get ported. According to the FCC, “If you are moving to a new geographic area, you may not be able to keep your current phone number when changing providers. Also, some rural wireline service providers may obtain waivers for the porting requirement from state authorities.”How long does a mobile number stay active? ›
Unused numbers can be recycled
The length of time before a provider deems a phone inactive varies: for some providers it can be as little as 70 days, while others wait six months or longer. Check your provider's terms and conditions to find out how much time you have.
How long does it take for a disconnected number to be recycled? Generally telecom providers reassign numbers within 90 days from when they had become deactivated but there is no specific time limit. In certain area codes with high demand for recycled numbers, the reassignment will occur much more quickly.Does a SIM card hold your phone number? ›
Data that SIM cards contain include user identity, location and phone number, network authorization data, personal security keys, contact lists and stored text messages. SIM cards allow a mobile user to use this data and the features that come with them.Can a phone number expire? ›
All Call History, Voicemails, and Message Conversations will still be accessible on your expired number but you will not be able to make/receive any new calls or texts from that number. Minutes or SMS remaining on an expired/deleted prepaid number are non-transferrable and will be deleted upon expiry.Can a phone number be discontinued? ›
Phone numbers are deactivated for various reasons: SIM cards being inactive for many months, SIM cards being banned for abuse or fraud, and others. Whatever the reason is, if you seek to get your disconnected number back, this guide offers you tips on how to get back a deactivated phone number.Is your phone number permanent? ›
Decades ago, people changed their phone numbers all the time—if you had to move to a new town, you didn't get to keep your number. Now, you can take your first cell phone number with you for life, even keeping the area code on a new continent if you're willing to pay for it.How do I know if a mobile number is still active? ›
Phone number verification tools
The simplest and least time-consuming way to check if a phone number is active is to use a phone number validation tool. This method involves one easy step—simply type the phone number into the tool and it will provide feedback on whether or not the phone number is active and accurate.
If your service provider has not allocated your old number to anyone, you can ask them to reactivate it. However, if someone registered your deactivated old phone number under their name, you might not be able to get that number back.What happens when you port your number? ›
When a number is ported, the original provider transfers responsibility for terminating a phone number to the new one. In order for this to happen, a 'porting agreement' must exist between the two. There must also be a 'number portability transit path' between the network operators for both communications providers.