Calling 111 in UK

[ABurgess]

I’m having trouble calling NHS111. In the past I have made calls to them with no problem.  But today I type the number and press the call button and it looks like it’s doing what it should and then the call ends without even ringing or connecting to a line. 
I thought it was my phone but I have been able to call other numbers on it since.  
have I accidentally turned something on or off. 
I would be grateful if someone could help. 

[Enlli]

Strange. Just called and it went through OK

[MI5]

@ABurgess 

If you have dial assist turned on in settings your phone may be trying to add a dial code automatically which can make the number unrecognisable.

[ABurgess]

Thanks for this. 
Tried turning it off and dialled again. But still doesn’t work for me. 

[MI5]

@ABurgess 

Have you tried rebooting the phone?

[ABurgess]

Yes, I did the same thing on my partner’s phone and the call went through. However, when I try to use my mobile it won’t. 
I have turned my phone off and back on.  I have tried turning the call assist off. 
There must be something that I have accidentally turned on or off that I need to change back but I don’t know what that is. 

[ABurgess]

Yes, I have turned it off and then back on again twice and still not doing it. 
There must be something that I have accidentally turned on or off and I need to change it back but I don’t know what it is. 

[MI5]

@ABurgess 

See if 202 works for customer service.

It will tell us if you have a problem with shortcodes.

[ABurgess]

I just tried that and that does the exact same thing as the 111.  Ends the call before doing anything

[MI5]

Can you call any phone number @ABurgess 

Any issues noted in your MyO2 regarding bills etc https://mymobile.o2.co.uk/ ?