How to Cancel Three Mobile
Leaving Three requires requesting a PAC code (to keep your number) or a STAC code (to lose your number). Since 2019, you can get these via text, making the process simpler.
Steps verified March 2026
Quick Facts
Monthly cost
£24.00/mo
£288.00/year
Cancel online?
Yes
Pause option?
No
Notice period
30 days
Refund policy
No refunds on used airtime. If within contract, early termination charges are the remaining monthly fees.
After cancellation
Your phone number is transferred to your new network if you use a PAC code. Three retains billing records.
What to Watch Out For
- When you text PAC, Three responds with a retention offer before providing the code
- The app and website prominently show "upgrade" options but bury the "leave" option
Cancellation Steps
Go directly to Three Mobile cancellation pageText for your PAC code
Text "PAC" to 65075 from your Three phone. You will receive your PAC code by text within 1 minute.
Give the PAC to your new provider
When joining a new network, give them your PAC code. They will handle the switch.
Wait for the switch
The transfer happens within 1 working day. Your Three contract is automatically cancelled.
Pay your final bill
Three will send a final bill including any early termination charges if applicable.
Tips & Things to Know
- If you do not want to keep your number, text "STAC" to 75075 instead.
- PAC codes are valid for 30 days.
- Check if you are still in contract - early termination fees may apply.
- If you are out of contract, you can leave with no penalty.
Your Consumer Rights
- Ofcom rules require mobile networks to provide PAC codes within 1 working day of a text request.
- If Three raised your prices mid-contract above the rate of inflation, you have the right to leave without early termination fees.
Frequently Asked Questions
Can I cancel Three Mobile at any time?
If out of contract, yes. If in contract, you can leave but will owe early termination charges for remaining months.
Will I get a refund from Three?
No refunds for used airtime. Your final bill covers the 30-day notice period.
What happens to my phone number if I leave Three?
Text PAC to 65075 to get a code that lets your new network take your number. The code is valid for 30 days.
How long does it take to leave Three?
Getting your PAC code takes 1 minute by text. The actual switch to a new network happens within 1 working day.
Do I need to return my phone to Three?
No. If you bought the phone outright or finished paying it off, it is yours. If you still owe on a device plan, payments continue separately.
Annual Cost
£288.00
per year for Three Mobile
Cancelling saves you this every year