iPhones fail to auto-join THREE_WIFI on London Underground despite being configured to do so

[NFH]

Since May 2022, it is no longer possible for Three customers to use the "Virgin Media WiFi" SSID in London Underground stations, as they must now connect instead using the new "THREE_WIFI" SSID. Three provides a wifi profile on SIMs containing the credentials for iPhones to connect to the new "THREE_WIFI" SSID.

https://www.three.co.uk/support/device-support/free-wifi-on-london-underground instructs iPhone users "Switch on your device and connect automatically". However, despite this clear confirmation that the device should connect automatically, as well as the THREE_WIFI profile being configured by Three to "Auto-join" and this wifi network being configured in wifi settings to "Auto-Join", iPhones fail to automatically join this wifi network. The impact is that:

1. Whenever an iPhone becomes briefly disconnected from THREE_WIFI for any reason, it fails to reconnect automatically and remains disconnected.
2. If a Three customer is on a train, then each time the train comes into a Tube station, the iPhone fails to reconnect automatically to THREE_WIFI, causing a loss of connectivity.
3. If a Three customer walks around a Tube station, then the iPhone can become disconnected from THREE_WIFI if there is a failed handover between access points, following which the iPhone fails to reconnect automatically to THREE_WIFI, causing a loss of connectivity.

This is a defect, which did not occur on the previous "Virgin Media WiFi" SSID.  The defect is either with the configuration of the THREE_WIFI network or with the THREE_WIFI profile on the SIM, which contains the credentials for this wifi network. Given that the defect does not occur at one station, Waterloo, it suggests that the cause is the former rather than the latter. It is notable that the wifi at Waterloo has always behaved slightly differently from other stations also with the previous "Virgin Media WiFi" SSID. The defect affects all Three customers using iPhones, not only me.

I have reported this to Three customer services, but the responses that I received demonstrate insufficient technical knowledge by customer services to understand or resolve the issue, and there is also a significant language barrier. Please could the Three community team escalate this and obtain an estimated time for it to be fixed?

[NFH]

@JonathanBResetting network settings is quite a drastic step. It deletes a large amount of the user's data, specifically all wifi passwords. Therefore unless it is a known solution to a problem, it is not a step to try just on the off-chance that it might work.

[SE]

Last night NO THREE Wifi connectivity. Not fixed for me. Any suggestions wellcome. iPhone XR. Latest software installed. Its a THREE Issue, and possibly my settings in my phone. NOT YET RESOLVED.

[JonathanB]

Hi @SE,

We'll do our best to help, but I think it's best to stick to the other thread you've been posting on. This'll help keep the information on the community clear and tidy, so that it can be more helpful to our members.

If we do solve the other issue, and you then notice issues with auto join, please update me here though.

JonathanB

[NFH]

@SEAre you saying you have no connectivity at all (which would be different symptoms) or that your iPhone doesn't auto-join the network (which would be the symptoms that I described above)?

[JonathanB]

Hi @NFH,

Sorry for the delay in getting in touch with you. I appreciate that this must be a really frustrating issue if you're having to repeatedly manually connect to the Wi-Fi service at underground stations.

I've received feedback that we have recently addressed an issue that was causing some authentication requests on the underground network to fail, so that may be relevant here. Is this issue still persisting for you now?

I appreciate you've mentioned this is an issue for all iPhone users on Three, but could you confirm which model(s) of iPhone, which software version(s), and at which station(s) you've recently been experiencing this issue?

Thanks,
Jonathan

[SE]

The Three chat text is 30 mins avoiding direct questions. The issue remains. No uk or trusted way to resolve this. I’m leaving three…after endless frustrations