How do I set up call waiting

[Triaj07]

How do i set up call waiting as when I'm on the phone I'm missing phone calls its an Sony experia xa1

Thanks 

[Jonas]

Hi @Triaj07, welcome to our community!

You can enable this if you open up the phone application > tap the three dots in the top right corner > Settings > tap Calls > Additional settings > tap the switch beside Call waiting to enable the function.

If you are not able to enable it, contact your operator and make sure that this feature is enabled on your subscription and SIM card.

Let me know if that helps!