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

Step 1: Get a PAC Code from Three

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

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

  1. Online: You can get a PAC Code from Three by logging in to the My3 Account website.
  2. By Text Message: You can get a Three PAC Code sent to you via SMS text message. Text PAC followed by your date of birth in DDMMYY format to 65075 to receive a PAC Code from Three.
  3. By Phone: You can get a PAC Code by calling Three. To do this, call them on 333 using your Three handset. Alternatively, dial 0333 338 1001 from any other phone. You'll need to call during Three's opening hours (Monday-Friday 8am-8pm, Saturday 9am-6pm, Sunday 9am-6pm).

Here are some key things to know:

  • The PAC Code from Three should consist of six numbers with HTG at the start (e.g. HTG 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 Three: it'll be closed automatically when your phone number is transferred to VOXI.

Still in contract with Three? If so, you may need to pay an early exit fee on your bill from Three. To find out how much this would be, text INFO followed by your date of birth in DDMMYY format to 87075.

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

Three STAC Code (Leave Three Without Keeping Your Number)

If you’d like to leave Three 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 Three:

  1. Online: You can get a STAC Code from Three by logging in to the My3 Account website.
  2. By Text Message: You can get a Three STAC Code sent to you via SMS text message. Text STAC followed by your date of birth in DDMMYY format to 75075 to receive a STAC Code from Three.
  3. By Phone: You can get a STAC Code by calling Three. Call them on 333 using your Three handset. Alternatively, dial 0333 338 1001 from any other phone. You'll need to call during Three's opening hours (Monday-Friday 8am-8pm, Saturday 9am-6pm, Sunday 9am-6pm).

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

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

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

If you're looking for a SIM card from VOXI, the following deals from £10/month are currently most popular:

NetworkMinutesTextsDataMonthly
Cost
VOXIUnlimitedUnlimited15GB£10.00
1 month
VOXIUnlimitedUnlimited20GB£12.00
1 month
VOXIUnlimitedUnlimited30GB£15.00
1 month
VOXIUnlimitedUnlimited100GB£20.00
1 month
VOXIUnlimitedUnlimitedUnlimited£35.00
1 month

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

VOXI 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 VOXI.

Step 3: Give the PAC Code to VOXI

Once your new phone or SIM card arrives from VOXI, 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 VOXI and provide them with your PAC Code from Three.

Your PAC Code should be entered on VOXI's online form. Alternatively, you can give the PAC Code to VOXI by calling 191 on your VOXI handset. You can also call 03333 040 191 from any other phone.

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

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

Remember:

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

Step 4: Phone Number Transferred (Next Working Day)

As long as you've submitted your PAC Code to VOXI 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 VOXI. You should find that the VOXI 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 VOXI, your account on Three will automatically be closed. You'll receive a final bill from Three for any outstanding charges.

Get the Latest Deals from VOXI →

Any Other Questions?

In case of any problems during the transfer of your phone number, you should contact your new mobile network (VOXI) 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 1,957 so far

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

To view all 1957 comments about transferring a phone number, please visit the main PAC Code article.

  • Hi Ken,

    Thank you for doing this!
    My contract with Three has finally come in last
    30 days. I’ve been waiting for this for almost 2 years as their signal and services have become worse and worse. I can’t believe that in 2020 I was barely having internet in London.
    I have since moved to Voxi, gave them my PAC and my number is now transfered.
    I guess, I am still paranoid that Three will still charge me for no reason and I won’t be able to get through their massive call ce tre queues.
    My question is, once Voxi switched me, Three should automatically know that we are parting ways and give me my final bill?

    • Hi Andrew,
      Thanks for your comment. Once your PAC Code has been processed by VOXI, your account on Three will be closed automatically. No need to worry about them continuing to charge you – they should send you a final bill within one month of the account being closed. You can also check this through your My3 account, if you have one.
      Hope this helps,
      Ken

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