Descriptions : With WhatsApp Business, you can install WhatsApp Business and WhatsApp Messenger on the same phone. If you have your own business and personal phone numbers, you can install WhatsApp Business and WhatsApp Messenger on the same phone and register them with different numbers.
Required Android Versions : Ice Cream Sandwich [4.0.3–4.0.4] - Jelly Bean [4.1–4.3.1] - KitKat [4.4–4.4.4] - Lollipop [5.0–5.0.2] - Marshmallow [6.0 - 6.0.1] - Nougat [7.0 – 7.1.1] - Oreo [8.0-8.1]