Incoming calls on iPhone only ring twice

[Dilys]

My iPhone SE only rings a couple of times with incoming calls so I often miss the calls.  I can't find anything in settings or in an online manual to extend the ringing time.  
Has anyone else had this problem and is there anyway to increase the ring time?

[63johnw]

Hi @Dilys  try this. 

Type **61*321**00# on your keypad. This code will allow you to set how long your phone rings before it goes to your voicemail. Replace 00 in the code with the number of seconds you want your phone to ring.

[Daniel0210]

@63johnw 

I didn't know that either. I'm on my second iPhone SE. Don't need to change it but nice to know. 

[Dilys]

Thanks John for suggesting this, but the sequence didn't work.  I just got an error message and when I dialled from my landline the mobile only rang twice.

Any other suggestions gratefully accepted!

[63johnw]

Only other thing I can find is this @Dilys 

https://discussions.apple.com/thread/253079925?answerId=255779795022#255779795022

You could try a replacement sim if all else fails. 

[Dilys]

I haven't set up Face ID as I sometimes wear glasses and sometimes wear contact lens so didn't know if this would confuse the phone!  So I've only set up Touch ID.  There are no settings under Accessibility matching the ones suggested to turn off.

Thanks again for trying to solve the issue......I suppose I will have to phone Sky and see what they suggest.