Sharp Aquos Crystal User Manual page 75

Delete Chat History: To delete all your chat history, in the chat window, touch
n
Delete.
Note: You can use Hangouts as your phone's default messaging app, or as a standalone IM app. If
you set Hangouts as the default messaging app, the messaging app will be disabled. For more
information, see Default SMS App Settings.
Accounts and Messaging
> Delete >
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