PAC Codes, Switching and UK Mobile Number Guides

Clear, checked answers about UK mobile numbers. Find out how to get your PAC code and keep your number when you switch, what a mobile number is worth, and what the digits in it actually mean. Every guide is written by Jahangir Alam, who has worked in the UK mobile industry for more than 15 years, and checked against Ofcom and the networks’ own help pages.

Latest guides

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  UK Phone Number Format: How to Write and Dial UK Numbers (+44)
  How to write UK mobile and landline numbers, where the spaces go, and how to use +44 for calls from abroad, apps and forms.
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  Voicemail Number: How to Check Your Voicemail on Every UK Network
  Your voicemail number for every UK network, checked against each network’s own help pages, plus how to reach it from another phone or abroad.
• 
  UK Mobile Networks: Which Network Every Provider Uses
  The UK has three mobile network owners: EE, O2 and VodafoneThree. Which network giffgaff, Tesco, VOXI, SMARTY, Lyca and every other provider uses, and how to check coverage.
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  PAC Codes for VOXI, Sky Mobile, SMARTY, Talkmobile and Lyca
  How to get a PAC code from VOXI, Sky Mobile, SMARTY, Talkmobile and Lycamobile: the exact text to send, the phone and online routes, timing, and credit refunds.
• 
  STAC Code: How to Leave Your Network Without Your Number
  Text STAC to 75075 to leave your mobile network without keeping your number. What it costs, what it does to your contract and credit, and the PAC mix-up to avoid.
• 
  How to Change Your Phone Number in the UK (and What to Do First)
  Ask your network for a new number, or get a new SIM. What it costs, how to protect your bank and WhatsApp, and what to try first for nuisance calls.

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