Just tell her, "I am about to make a phone call. You may sit next to me, but DO NOT interrupt me."
Or "I am going to make a phone call and it is going to be boring, do you want to watch a video or go and play in your room? Remember do not interrupt me while I am on the phone."
"Dad and I are having a conversation, do not interrupt us." "It is not nice manners to interrupt a grown up conversation."
"Give us 5 minutes to talk. It is not good manners to interrupt us."
If you are on the phone and she does interrupt, "Please do not interrupt my phone call." or 'Remember it is not nice manners to interrupt a phone call."
" I am having a phone conversation, I will speak with you when I am finished."
Punishment for interruptions after she has been told to stop is a time out.
Thanking her for not interrupting is telling her "Thank you for not interrupting my phone call,."
"I like your good manners, when you did not interrupting my phone call," "Thank you for your patience."
Do you have any good stories about good manners. We liked the Berenstien Bears books about manners..