0800 numbers going straight to a voicemail but not on my phone?

[MollyB2]

Today, I have found out that calls from an 0800 number to my mobile, were redirected instantly to a voicemail service.  I have no call diverts on my phone, the number is not blocked on my phone (checked that) and I'm rather concerned that neither the 0800 number or the voicemail message that they left, appears on my phone.  It would appear that both the call and the message have dropped in to an 02 abyss?  How can this be?  I have checked my phone settings and there is no block on 0800 numbers, no restriction on unknown callers, no explanation as to why this should be happening.  I have an iphone 15.

[madasaf1sh]

@MollyB2 

Numbers not in your contacts are redirected to Voicemail as of IOS 26.2  Have a look under the Hamburger menu in the top right, and then Unknown Callers..

Also to turn it on or off go to Apps, then Phone and scroll down.. 

This isnt an o2 thing but an Apple Improvement..

[Enlli]

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@madasaf1sh wrote:This isnt an o2 thing but an Apple Improvement..

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😂😂😂😂😂

[MI5]

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@madasaf1sh wrote:

@MollyB2 

Numbers not in your contacts are redirected to Voicemail as of IOS 26.2 

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But it's not turned on by default and needs enabling by the user.