You can't delete chat history in the new chat experience in Virtual Office Mobile 7.2 because it is enterprise-focused and doesn't have the option. Learn more.
Symptom
You are unable to delete chat history.
Applies To
Virtual Office Mobile 7.2
Cause
This is by design. The New Chat Experience in VOM 7.2 is more enterprise-focused and does not have a delete chat history option. A future version will have options to help you achieve “0-inbox” and correct mistakes.