Divert to Voicemail Settings
On IoS 18.0.1 on an iPhone 16 Pro - service provider is Vodafone UK.
This is a recent bug - divert to voicemail has worked fine for many years.
Divert to voicemail has started diverting too quickly (about 15s), despite a setting of 30s on my Vodafone account. In fact, even if I turn divert to voicemail off on my Vodafone account, it still gets diverted.
I moved my simm to another phone (actually an older iPhone), making no other changes, and divert to voicemail works as expected.
I cannot find any settings on my iPhone to do with this. Does anyone know any of the magic codes that might help here? I can't find them on the support website anywhere...
iPhone 16 Pro, iOS 18