Since 2023, Android users have had the ability to accomplish this.
According to WABetaInfo, the most recent beta release for WhatsApp on iOS allows users to add and switch between several accounts on the same device. This capability was made accessible for Android almost a year ago. According to WABetaInfo, users of iOS version 25.2.10.70 have the option to add a second account to the app. They may do this by either setting it up as a standalone primary account or by scanning a QR code to attach the new account as a buddy. Beta testers can now access the update through Apple's TestFlight program.
In order to run two WhatsApp accounts at the same time on an Android device, you need a dual-SIM setup, because each account has to have its own phone number. WhatsApp has another app called WhatsApp Business that allows users to create a second account with a separate phone number. However, this still requires switching back and forth between two different apps. The Android version and the iOS update that is now being tested allow customers with two phone numbers to keep all of their conversations in one app.
