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Question

London underground wifi

  • September 29, 2025
  • 6 replies
  • 345 views

Every-time i try to log into Three WiFi  on London underground, I always get a message “ Please Insert a valid USIM card? Any help would be appreciated 

6 replies

Tyler C
iD Mobile Employee
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  • iD Mobile Employee
  • September 30, 2025

Hi there ​@Welch, I’m not sure that we at iD Mobile offer Three Wi-Fi, even though we use Three UK’s network. I’d recommend contacting Three directly to look into this, but it may be because we don’t offer the usage of this service.

 

Thanks,

Tyler


  • Author
  • New Contributor
  • October 1, 2025

Hi Tyler,

why is is that I cannot connect no where on London Underground . I  cannot get no connection anywhere on London Underground 

I mean I use smarty before switching over to ID , smarty also use Three network and I could of connect to Three_Wifi without any problems

I am sure I saw a post in  ID community about 2 years ago stating that you can connect on the below stations 

  • Archway
  • Bermondsey
  • Bond Street (Elizabeth line platforms)
  • Canada Water
  • Canary Wharf
  • Canning Town
  • Farringdon (Elizabeth line platforms)
  • Holland Park
  • Kentish Town
  • Liverpool Street (Elizabeth line platforms)
  • London Bridge
  • North Greenwich
  • Notting Hill Gate
  • Queensway
  • Southwark
  • Tottenham Court Road (Elizabeth line platforms)
  • Tufnell Park
  • Waterloo
  • Westminster

JoeKing
Silver Contributor
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  • Silver Contributor
  • October 1, 2025

I use the London Underground and can connect the the available Wi-Fi network without issues. That's using my Nothing Phone 2 and IDMobile sim.

 

Joe


Siân W
iD Mobile Employee
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  • iD Mobile Employee
  • October 2, 2025

Hi ​@Welch sorry to hear you’re having trouble with this. Does the data work in a different handset? Are you able to try this please?

Also, here is a full list of the stations - Can I use data on the London Underground? | iD Mobile Community


  • Author
  • New Contributor
  • October 2, 2025

I use the sim in the phone I recently got with the contract S25 FE. I also use the sim in my Samsung S25 Ultra and still the same thing 


Siân W
iD Mobile Employee
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  • iD Mobile Employee
  • October 3, 2025

OK ​@Welch  it may be worth trying a replacement SIM then - How do I get a replacement SIM or eSIM? | iD Mobile Community