Whatsapp on iOS will soon allow its users to use multiple Whatsapp accounts on their iPhone. The company seems to be currently testing the multiple accounts feature on WhatsApp for iPhones. As noted by WABetaInfo, the recent beta version of WhatsApp iOS app (version 25.2.10.70) shows the multiple accounts feature.
Users will be able to add multiple Whatsapp account just like they currently do in WhatsApp for Android. Although we don’t know the exact release date when this feature will be available, but we can expect to see it very soon.