1. Uninstall WhatsApp from your phone or device. This will clear your personal information from the app. You will reinstall it later and enter the individual’s information instead of your own.1

Uninstall WhatsApp from your phone or device. This will clear your personal information from the app. You will reinstall it later and enter the individual’s information instead of your own.[1]

2. Locate and write down the individual’s Media Access Control (MAC address). Every phone is assigned a MAC address, a unique identifier that serves as its online identity. MAC addresses are a series of six pairs of letters and/or numbers separated by colons.

iPhone: Launch “Settings” and select “General”. Click “About”. Write down the address to the right of “Wi-Fi Address”.

Windows phone: Click “Settings” then “About”. Click “More info”. Write down the address to the right of “MAC address”. Record the address.

BlackBerry: Select “Options” then “Device”. Click “Device and Status info”. Write down the address to the right of “WLAN MAC”. 

3. Locate and record your MAC address. In order to access the individual’s WhatsApp account, you must swap their MAC address for yours. Once you are done viewing their account, you will need to replace their MAC address with your own. Once you’ve located your MAC address, write it down.

iPhone: Launch “Settings” and select “General”. Click “About”. Write down the address to the right of “Wi-Fi Address”.

Windows phone: Click “Settings” then “About”. Click “More info”. Write down the address to the right of “MAC address”. Record the address.

BlackBerry: Select “Options” then “Device”. Click “Device and Status info”. Write down the address to the right of“WLAN MAC”

4. Install apps that will let you change your phone’s MAC address. In order to log into WhatsApp as another person, you must replace your MAC address with the individual’s MAC address.

iPhone users, first Install Cydia from the web. Once downloaded, open the app and search for “network-cmds”. Click on “network-cmds” then “Install”. Press “Confirm”. Once downloaded, search for “Mobile Terminal”. Click “Mobile Terminal”, followed by “Install” and “Confirm”.. Then, download “BusyBox” and click the app and install it. Finally, download “Terminal Emulator”. These apps are free from the Google Play Store

5. Change ("spoof") your phone's MAC address to that of your target. Altering this address should not impact your phone's functionality.

iPhone: Open “Mobile Terminal;”. Type “su” and press ↵ Enter. Enter “Alpine” as the password. Type “nvram wifiaddr=xx:xx:xx:xx:xx:xx”, replacing “xx” with the individual’s MAC address. Press ↵ Enter. Turn off your device then turn it back on. You MAC address will have changed.[8]