Had a few questions relating to conversation.

1. I think I heard ´mı?´ said on it´s own. Is that OK in conversation as a general question? Sort of equivalent to huh?

2. Is this OK on the phone, I wasn´t sure whom I was speaking to but I thought it was Melikfar. I said ´Melikfar mı?´.

3. I think Bende is in me and Ben de is me too. Is it hard to tell the difference in conversation, they are pronounced a little differently?

I thought I heard a Turkish person say ´mı?´ (i.e. only ´mı?´.

In English we use ´huh?´ as a general question like ´what?´ or ´it is?´ or ´isn´t it?´.

Can (in conversation only) we use ´mı?´ in the same manner?

nope, it´s not possible to say like that, mı/mi/mu/mü are never used alone.

isn´t it=değil mi

what=ne

i can help you more if you give me full sentences.

´´mı´´  can NOT be used on its own in any conversation. It can only make sense with other words, generally making question or asking for an approval.

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You can ask kiminle görüşüyorum  ? --> Whom I am talking to  ?

or

You can ask in polite way by adding hanım / bey at the end of the person´s name, asking approval if you are not sure of the person on the other end of the phone.

-Melikfar hanım ?

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Yes, Bende is in me/on me  and Ben de is me too /me also

You can know which one by the context.