Not returning to 4G after call

[Anonymous]

Hi all

The area where I live doesn't have VoLTE/4G Calling, so when I make a call my iPhone X switches to 3G. 

The problem is that it does not return to 4G after the call, no matter how long I leave it. The only way to return to 4G is to toggle Airplane mode or power off/on. 

All settings seem to be appropriate and the same phone (and settings) worked fine on Vodafone on EE. 

An O2 Guru told me that I didn't have the correct bolt-ons and claimed to fix that but I can't see that being the issue as my phone does connect to 4G, it just doesn't return to 4G after a call. In any case, the changes did not have the desired effect.

He has also arranged to send me a new sim however I'm seriously doubtful this will resolve the issue either. 

Does anybody have any ideas?

Thanks

Dave

[MI5]

I seem to recall this been asked before on here and that was an iPX too.
A new sim would be the first thing to try but I'm not aware that the issue was solved for the other customer who reported it either.

[anticpated]

Seems a bit flaky at the moment. I disabled the option for the moment.

[MI5]

Might be worth disabling just the 4g calling part in phone settings on the iPhone rather than the entire 4g/wifi option.

[Anonymous]

Thanks for the suggestion. I've tried this but it made no difference.

[MI5]

My wife has a 6 with wifi calling enabled and doesn't have the problem as as the previous issue was also an X I guess it must be limited to that handset or a combination of handset and settings.
Have you tried with wifi and 4g calling disabled completely in your MyO2 ?

[Anonymous]

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@MI5 wrote:
My wife has a 6 with wifi calling enabled and doesn't have the problem as as the previous issue was also an X I guess it must be limited to that handset or a combination of handset and settings.
Have you tried with wifi and 4g calling disabled completely in your MyO2 ?

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Thanks for another suggestion.

I have just requested to remove WiFi calling and 4G calling and will see what happens once the request has been processed. 

[MI5]

It's an interesting problem so keep us updated with anything you find please.

[Anonymous]

I have a 7 Plus & If I have something like this then I switch off mobile data, leave it a few minutes then put it back on. Solves the problem every time 

[Anonymous]

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@Anonymous wrote:

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@MI5 wrote:
My wife has a 6 with wifi calling enabled and doesn't have the problem as as the previous issue was also an X I guess it must be limited to that handset or a combination of handset and settings.
Have you tried with wifi and 4g calling disabled completely in your MyO2 ?

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Thanks for another suggestion.

I have just requested to remove WiFi calling and 4G calling and will see what happens once the request has been processed. 

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I've now tested this and it had no effect. I have added 4G and WiFi calling again.