iPhone stopped making/receiving calls

[KD]

Hi all, 

Suddenly my iPhone will no longer ring out or receive calls?! 
If I try to make a call it looks like it’s ringing out but is silent and doesn’t connect. Does show in outgoing call list. 
Receiving calls, don’t show in missed calls list, rings out for others then to voicemail. 
Texts still fine etc. 

Already checked: Volume, silent, focus, accessibility settings, ringtones, SIM card works in another iPhone, my iPhone works with another sim too, payment is fine and current. 

Anyone who can throw any light on what could be happening? I confess it’s doing my head in now 🤯😂 

[Decembersangel]

Hi @KD 👋
I am with another network and recently saw this on their Community posts with regards to an answer for iPhone owners who had the same problem of not being able to make/receive calls......

Iphone users I have managed to fix it on my Iphone…. If you are using an Iphone with IOS18 open settings, select apps, scroll down and select phone, and where it says “My number” type your number starting with a 0(zero). Then click save. Try to make a phone call. Worked for me straight away.

Hope this helps x