For Desktop and Web App: At first, you should select the Chat tab on the left side, and next choose the conversation from the chat list. Then, you can hover your cursor over the chat you want to delete and click the three dots that appear for More Options. Click Delete Chat. For Mobile App (Android, iPhone, and iPad): Select the Chat tab at the bottom of the app and pick the conversation you want to delete. On Android, tap and hold the chat. Select Delete and confirm by tapping OK. On iPhone and iPad, swipe the chat from right to left and tap More. Select Delete and confirm by tapping Yes.