Most Android smartphones today feature dual-SIM support which allows users to use two different numbers on a single device. With two phone numbers in one smartphone, there's a change that you would want to run two instaces of WhatsApp for both the phone numbers. Companies like Xiaomi, Samsung, Vivo, Oppo, Huawei and Honor now offer 'Dual Apps' or 'Dual Mode' feature (the name may differ from brand to brand) which allows users to run two different accounts of the same chat app.
This means you need not carry two smartphones just to use two WhatsApp accounts. Wondering how? Here's a ready-to-use guide.
First, let's start with the name and location every manufacturer uses for this feature:
Samsung: Dual Messenger Settings > Advance features > Dual Messenger
Open the dual apps settings option on your smartphone
Select the app you want to duplicate (in this case select WhatsApp)
Wait for the process to finish.
Now, head to the home screen and tap on the second WhatsApp logo you see in your app launcher
Configure using another phone number and get going.
Do note that there are a few phones -- Android One devices and those offering 'stock' Android -- that do not come with dual app features . For these, there are several apps such as Parallel, Dual App Wizard, DoubleApp and more available on Google Play Store. Users can just download these apps to run two accounts of the same Chat app on their phones.