WhatsApp Chat
You need to set WhatsApp number here, and this WhatsApp number is shown in the contact us page in Ciyashop iOS application. When the user of the application clicks on WhatsApp number, it will open chat with that number in WhatsApp app.
Now WhatsApp Floating button is available in CiyaShop iOS application. By click on that button user will able to chat with the given number via WhatsApp.