Path for Wo Assistant to order or unsubscribe: log in to Unicom China Unicom APP and click Services > Handling > Basic Services > Wo Assistant. The services that can be handled include missed message reminder, voice message, intelligent reply, intelligent reply Plus, calling card and hang-up SMS. Among them, calling business cards, hanging up short messages support mobile phones and fixed-line accounts to log in to Unicom China Unicom APP to order or unsubscribe.