Switching from Vodafone to Three? It's a straightforward process to keep your existing phone number.

Step 1: Get a PAC Code from Vodafone

If you’d like to move your phone number from Vodafone to Three, the first step is getting your Porting Authorisation Code (or PAC Code) from Vodafone.

There are three ways to get a PAC Code from Vodafone:

  1. Online: You can get a PAC Code from Vodafone by logging in to the My Vodafone website. Once you've logged in, go to Account settings > Mobile switching.
  2. By Text Message: You can get a Vodafone PAC Code sent to you via SMS text message. Text PAC to 65075 to receive a PAC Code from Vodafone.
  3. By Phone: You can get a PAC Code by calling Vodafone. To do this, call them on 191 using your Vodafone handset. Alternatively, dial 03333 040 191 from any other phone. You'll need to call during Vodafone's opening hours (Monday-Friday 8am-9pm, Saturday 8am-9pm, Sunday 8am-9pm).

Here are some key things to know:

  • A PAC Code is 9 digits long and follows the format ABC 123 456.
  • Your PAC Code is valid for 30 days. If you don't use it during this time, the PAC Code will expire and you'll need to request a new one.
  • You shouldn't close your account at Vodafone: it'll be closed automatically when your phone number is transferred to Three.

Still in contract with Vodafone? If so, you may need to pay an early exit fee on your bill from Vodafone. To find out how much this would be, text INFO to 85075.

Don’t want to keep your Vodafone phone number? You can switch to Three without taking your phone number with you. If you'd like to do this, get a STAC Code from Vodafone instead.

Vodafone STAC Code (Leave Vodafone Without Keeping Your Number)

If you’d like to leave Vodafone without keeping your phone number, you’ll need to request a STAC Code rather than a PAC Code. There are three ways to get a STAC Code from Vodafone:

  1. Online: You can get a STAC Code from Vodafone by logging in to the My Vodafone website. After logging in, go to Account settings > Mobile switching.
  2. By Text Message: You can get a Vodafone STAC Code sent to you via SMS text message. Text STAC to 75075 to receive a STAC Code from Vodafone.
  3. By Phone: You can get a STAC Code by calling Vodafone. Call them on 191 using your Vodafone handset. Alternatively, dial 03333 040 191 from any other phone. You'll need to call during Vodafone's opening hours (Monday-Friday 8am-9pm, Saturday 8am-9pm, Sunday 8am-9pm).

Once you’ve gotten your STAC Code from Vodafone, the rest of the process for joining Three remains the same.

Step 2: Order your new phone or SIM card from Three's website

You should now order your new phone or SIM card using the Three website. Please select the type of tariff you're intending to move to:

If you're looking for a SIM card from Three, the following deals from £5/month are currently most popular:

Network Data Monthly Cost
Three
  • Unlimited mins
  • Unlimited texts
3GB
data
£5.00
per month
24 month contract
Monthly cost will rise each April by £1
See deal  
Three
  • Unlimited mins
  • Unlimited texts
12GB
data
£6.00
per month
12 month contract
Monthly cost will rise each April by £1.25
See deal  
Three
  • Unlimited mins
  • Unlimited texts
30GB
data
£7.00
per month
12 month contract
Monthly cost will rise each April by £1.25
See deal  
Three
  • Unlimited mins
  • Unlimited texts
120GB
data
£10.00
per month
12 month contract
Monthly cost will rise each April by £1.50
See deal  
Three
  • Unlimited mins
  • Unlimited texts
Unlimited
data
£20.00
per month
24 month contract
Monthly cost will rise each April by £1.50
See deal  

For a full list of available tariffs and the latest Three deals, please refer to this page on Three's website.

Alternatively, if you're getting your Three plan from a reseller, tap on their logo for more information:

Three will assign you with a temporary phone number during the transition process. This will allow you to test out the service before you finally transfer your phone number to Three.

Step 3: Give the PAC Code to Three

Once your new phone or SIM card arrives from Three, switch it on and make sure everything's working properly. If, for whatever reason, you need to return or change the handset or SIM card, it's best to do this before transferring your phone number.

Once you're happy to continue with the phone number transfer, contact Three and provide them with your PAC Code from Vodafone.

Your PAC Code should be entered on Three's online form. Alternatively, you can give the PAC Code to Three by calling 333 on your Three handset. You can also call 0333 338 1001 from any other phone.

If you have a STAC Code from Vodafone rather than a PAC Code, this can be provided to Three in the exact same way.

Providing your PAC Code to Three
The PAC Code should be submitted through a form on Three's website.

Remember:

  • You must provide the PAC Code to Three within 30 days of it being issued by Vodafone. If the PAC Code has already expired, you'll need to return to step 1 and request a new PAC Code from Vodafone.
  • Vodafone Pay As You Go customers: Try to use up your remaining credit as it can't be transferred to Three.

Step 4: Phone Number Transferred (Next Working Day)

As long as you've submitted your PAC Code to Three before 5pm, your phone number transfer will normally be scheduled for the next working day (Monday to Friday only, excluding English bank holidays). After 5pm, you'll need to wait one extra working day for your number to be transferred.

On the day of the transfer, you'll momentarily lose coverage on both mobile networks. When this happens, restart your handset on Three. You should find that the Three phone or SIM card will now associated with your original phone number.

  • If you see an error message (e.g. "SIM card registration failed"), this means it's time to restart your phone.
  • Once the phone number has been transferred to Three, your account on Vodafone will automatically be closed. You'll receive a final bill from Vodafone for any outstanding charges.

Get the Latest Deals from Three →

Any Other Questions?

In case of any problems during the transfer of your phone number, you should contact your new mobile network (Three) with details of the problem.

If you have any other questions on using a PAC Code, please see my in-depth guide to transferring your phone number between networks. You can also read the comments below from other visitors to this website.

← Full Article: "PAC Codes - How to transfer your mobile number when switching networks"

Your Comments 1,966 so far

We'd love to hear your comments on transferring a phone number from Vodafone to Three. The comments below are from people who've made the same transfer. You can add your own comments here.

To view all 1966 comments about transferring a phone number, please visit the main PAC Code article.

  • Joana Santos said:

    Hi I got the PAC code and a message saying the switch (from a Vodafone number to Three) would occur. 24h later my phone is still not working, showing ‘no service’ – is there another step I need to do / anything to activate, etc.?

    Many thanks,
    Joana

    • Ken replied:

      Hi Joana,
      Thanks for your comment. Have you lost the coverage on your Vodafone SIM card? If so, it’s now time to switch over to the Three SIM.
      If you haven’t ever had coverage on your Three SIM card, this is a little odd as you should normally always have coverage (including before you move your phone number over)?
      Hope this helps,
      Ken

  • JayB said:

    Hey Ken, really useful set of information.

    For many reasons I have two monthly SIM cards and I’m looking to settle on one provider now.

    PAC typically refers to transferring a number into a new contract or agreement. But I can find no data on if PAC transfers in have a time limit.

    I know PAC codes have a 30-day validity once requested.

    So can you bring over a number to an account that has been running for a long time ?

    In this case its Vodafone to Three

    • Ken replied:

      Hi JayB,
      Thanks for your comment. As you say, PAC Codes have a 30-day expiry from the date on which you request them (if it’s gone more than 30 days, you can simply request a new PAC). There’s no limit on how long you could have been using the phone number on your old network (whether it’s been 10 days or 10 years, you’re still able to request a PAC Code in the same way to move your phone number to another network).
      Hope this helps,
      Ken

  • Paul said:

    Hello, i ported my vodafone number to three, before couple days receive text restart my phone , and i can make calls and send text but i not able receive incoming call or text, When calling straight goes to voicemail welcome to lyca mobile (vodafone). , i already contacted ree they told me cant see any problems and on system shows everything works fine, they told me i have to wait they will send to technicians to chekc again, maybe someones know why still cant receive calls? Is problem from vodafone or three? Looks like porting done only half. Thank you

    • Ken replied:

      Hi Paul,
      Thanks for your comment. Sorry – I was a little unclear on your original mobile network: was it Vodafone, Lycamobile or Lebara Mobile? To give a quick overview, Lycamobile actually uses the O2 network (maybe you’re referring to Lebara which instead uses Vodafone as their network coverage provider?).
      Anyway, with regards to the situation, it looks as if the porting is incomplete. The problem could be on either end but your best bet would be to get in touch with Three (dial 333 from your Three handset). They should hopefully be able to resolve the situation (and can liaise with your old network if required).
      Hope this helps,
      Ken

      • Paul replied:

        hi Ken,

        sim card is vodafone, but i dont know why voice mail says welcome to lyca mobile please leave your message, i already tryed contact three few times ,they told me wait ,but nothing happends, its 6 days nothing happens, also i was in three store and they gave me new sim card, but thats not help, still cant receive incoming calls and text and my voicemail still lyca but network is vodafone, the sim was brand new i get pac code and fill online form on three website, and on 18 jun get messages to restart my phone, i can make a the calls send text and use data internet, looks like split service, , but not sure why on vodafone network says welcome to lyca mobile. also three send me email to check this, but 4 days no anwser. maybe problem with old network?

        • Ken replied:

          Hi Paul,
          That’s positively bizarre – was your phone number originally issued by Vodafone or Lycamobile? You can check the spreadsheet here if you aren’t totally sure. If it was originally a phone number issued by Vodafone, I guess the phone number has transferred to the wrong network. If the phone number was issued by Lycamobile, it may have gone back to the original network. Either way, it’s exceptionally bizarre and I’m also at a loss to explain what has happened!
          Ken

          • Paul replied:

            well that vodafone sim card was brand new unpacked, i contact vodafone and get pac number, and when sim was unused i tryed to call so before says welcome to lycamobile, i really dont know why on vodafone says lycamobile, dont know where is the problem. but they check the number in vodafone and generated pac code , i dont think vodafone can generate lycamobile pac code ?

          • Ken replied:

            Hi Paul,
            It is very bizarre – I’m not sure why your Vodafone SIM card would have given that message (but it’s still worth checking the spreadsheet I sent to see if the number was originally from Vodafone). This article from 2009 gives more information on how to use the spreadsheet. Once you know the SABC and D/DE codes, check the company the number was issued to. This should give you some more information when going back to Vodafone/Three.
            Ken

  • ben said:

    Hi Ken,

    I am currently with Vodafone. I opted for a new contract today with three. However the contract begins on the 10th September. My Vodafone contract terminates on the 15 September.

    If I am to request a PAC code, can I give it to three AFTER the 15 September, or will it no longer be valid since my Vodafone contract will be finished after that date.

    Basically what I’m asking is: is it necessary to give three the PAC code BEFORE the 15 September or can I give it to them after the 15th (providing the PAC code is within the 30 day expiration period)

    Many thanks in advance

    • Ken replied:

      Hi Ben,

      Thanks for getting in touch about your move from Vodafone to Three. If you’ve already told Vodafone to terminate your contract on the 15th September then I would definitely move your number over as soon as you possibly can (i.e. call on the 10th and give them your PAC).

      If it’s simply a case of your 24-month term ending on the 15th September then don’t worry about it. Your contract at Vodafone won’t end automatically: it’ll continue just as before. You can move your phone number over at leisure. When you do this, Vodafone will send you a pro-rated bill for the final month (i.e. for the part of the month where you’re using Vodafone).

      Hope this helps,

      Ken

  • amy said:

    I took out new contract and wished to keep my old number. I got PAC code from vodafone and the shop assistant phoned 3g to tell them number, it has now been over 24 hrs and still no number transfer. any suggestions please

    • Ken replied:

      Hi Amy,

      Thanks for your comment. Providing the PAC code was provided to Three before a certain cut-off point, the number transfer should have taken place on the next working day. It’s possible that the cut-off point was missed: your number transfer might take place tomorrow instead. If it doesn’t, I’d give Three a call on 333 and double-check the status of your number transfer.

      Ken

  • Bill said:

    Hi Ken,

    I want to terminate my Vodafone monthly contract(approx. 9 months left to run) and switch to 3 network because they can offer me a good deal on iphone 4s.Is this as simple as it sounds?I know I will have to pay the outstanding monthly rental for the contract.Will they allow me to terminate this contract and also provide me with my PAC number?

  • Paul said:

    Hi Ken.

    If I pay the charge for Vodafone to change my number, will they then give me the pac code for the number I'm changing from?

    I'm doing this as I wanted to change my network to 3, but I cant afford to just buy out my Vodafone contract as there is something like 7 months left on it.

    Thanks.

    • Ken replied:

      Hi Pete,

      As far as I'm aware, there isn't really any alternative to buying out your Vodafone contract (though you might be able to ask them to switch your existing contract onto a different number and then to release this number to Three). There shouldn't be any charge for the PAC Code itself. Apologies – I guess this probably isn't the answer you were looking for.

      Ken

  • aj270303 said:

    Hi.

    I am currently on vodafone and still have 3 months left on my contract. i would like to get a phone from Three 3 network now so will have 2 phones running untilm my vodafone contract ends. Can i get a pack code from vodafone when my contract ends and then transfer my number to 3 a few months into the contract?.

  • Shez said:

    Hi Ken, its been over a week trying to get my number ported from Vodafone to 3G. When I call people from 3G my ported number shows up to the receiver, but if they return my calls then it still comes to the Vodafone sim. Vodafone say its 3G’s fault (they have the pac code), 3G say its Vodafone’s fault (they have not released the number) who is really to blame and what can I do about it? 🙁

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