Please note my multiple corrections above. It is important to follow these rules of written English:
- Start every sentence with a capital letter.
- Always capitalise the word "I" (first person singular).
- End every sentence with a single, appropriate punctuation mark.
- Do not put a space before a full stop, comma, question mark or exclamation mark.
- Do not put a space after a full stop, comma, question mark or exclamation mark.
- Do not put a space before closing brackets.
I have corrected the grammar but I don't really understand the situations you are talking about. What do you mean when you say that the man "knows" or "doesn't know" "about the phone".
If you are talking to him by telephone, then it's clear that you are carrying a phone. More context might make it clearer. I have suggested a couple of dialogues to see if they help you.
Man: What happened to that iPhone I gave you yesterday?
You: I'm talking to you on that phone!
Man: What are you carrying at the moment?
You: I'm carrying a phone and a rucksack.
Man: Are you carrying the pen I gave you on Monday and the phone I gave you yesterday?
You: I'm carrying the phone. I left the pen at home.
Student or Learner