My Mobiles

Switch from SMARTY to Three

Keep your phone number when you switch from SMARTY to Three. Here's how in 3 simple steps.

Updated April 2026

Important Warning

Do NOT cancel your contract manually. If you cancel before transferring your number, you will lose it permanently. Your old contract will automatically cancel once the transfer completes.

Pre-Switch Checklist

  • Back up your data: Contacts, voicemails, and saved messages won't transfer.
  • Unlock your phone: Ensure it's not locked to your old network if you plan to keep using it.
  • Check Early Termination Fees: Text INFO to 85075 to see if you'll incur charges for leaving early.

How to Switch from SMARTY to Three

1

Get your PAC code from SMARTY

Text PAC to 65075 from your SMARTY phone. You'll receive your PAC code by text within a minute.

2

Give your PAC to Three

Sign up for a Three plan and give them your PAC code. You can usually do this online at three.co.uk/support/switching, in-store, or by phone.

3

Wait 1 working day

Your number will transfer from SMARTY to Three within 1 working day. You'll get a text when the switch is complete. Your old SMARTY contract is automatically cancelled.

Transfer Cut-off Times: Submitting your PAC code before 5:30 PM usually means your number will transfer the next working day. Submitting it after 5:30 PM or on weekends/bank holidays will add an extra working day to the process.

Final Bill: You'll receive a final bill from SMARTY shortly after the transfer is complete. This covers your usage up to the date of the switch.

Ready to switch and save?

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Things to Check Before Switching

  • Contract status — Check if you're still in contract with SMARTY. You can switch at any time, but you may need to pay an early termination fee if your minimum term hasn't ended.
  • Outstanding balance — If you're paying off a handset, you'll need to settle any remaining balance with SMARTY.
  • Phone compatibility — Make sure your phone is unlocked and compatible with Three's network. Most phones sold since 2015 are unlocked.
  • Coverage — Check Three coverage in your area before you switch.

Same Network Coverage

SMARTY and Three both use the Three network, so you'll get the same coverage after switching. No need to worry about signal changes.

Ready to Switch to Three?

Compare the latest Three phone deals and find the best plan for you.