Can't you do Kakao Talk if your cell phone is stopped?

pu1. You can see the existing Kakao Talk messages, but you can't use the data to text them

2017-12-17

OK

pu2. You don't have to use data. You can use the Wi-Fi to text

2017-12-17

OK

pu3. You can connect to the Wi-Fi and keep using Kakao Talk. Of course, you can see all the Kakao Talk messages

2017-12-17

OK