How do you say " Do you have a KakaoTalk?" in Korean
Do you have a Kakaotalk?
Do you use KakaoTalk?

Question

Answer

카카오톡 있어요? (Do you have Kakao Talk?) 
카카오톡해요? (Lit. Do you do KakaoTalk? but is used to say Do you use KakaoTalk?) 
Also in Korea people actually shorten Kakao Talk to simply KaTalk (카톡).

Answer

This is how Korean people ask me about Kakao Talk:

• Do you use Kakao Talk?
-> 혹시 카카오톡 사용해요?

• Also:
-> 혹시 카카오톡 아이디 있어요?

Just alternative ways! 
=D

Answer

hello ,I am from China ,My  skype  name  is  xujiawen90 ,My  E-mail address is  xujiawen92@yahoo.com ,Let us be friends and teach each other ,Thank you  very  much !

Answer

카카오톡 있어요? (Do you have Kakao Talk?)
카카오톡해요? (Lit. Do you do KakaoTalk? but is used to say Do you use KakaoTalk?)

Also in Korea people actually shorten Kakao Talk to simply KaTalk (카톡).