Is it possible to stop the cell phone and then use Kakao Talk?

pu1. Ask for your cell phone number only when you sign up for Kakao Talk. You can keep using Kakao Talk on Wi-Fi.

2017-11-09

OK

pu2. Yes, it works well.

2017-11-09

OK

pu3. I need to have data to do Kakao Talk, but I can't use Kakao Talk because I won't have data if I cancel my cell phone. Instead, it is possible to use Wi-Fi.

2017-11-09

OK