"Yes, it's me!"
Translation:Jes, estas mi!
I'm not a good english speaker, so, what's the diference between Yes, I am - Yes, it's me?
I'd think of "Yes I am" (Jes, mi estas) as the answer to a question like "Are you awake?" (Ĉu vi estas maldorma?) and "It's me" (Jes, estas mi) as the answer to a question like "Is that you behind the door?" ("Ĉu estas vi preter la pordo")