I'll call you when I arrive. (Pay attention to capital letters and punctuation - i"ll is not correct at all.) "When I arrive" is a time clause for when the speaker will call, so it doesn't need to have a future form. Using "When I'll arrive" is definitely incorrect. https://learnenglish.britishcouncil.org/en/english-grammar/verbs/verbs-time-clauses-and-if-clauses http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-13727.php

Hi! The correct way to say it is "I'll call you when I arrive."

I'll call you when I arrive.

ok thank you. it's difficult for me to use correct tense.

Think of it like this: "When I'll arrive" logically applies to all points in history before you arrive, since at any time before you arrive, you could say "I will arrive".