Follow The Steps -:
1) First of all, completely uninstalls WhatsApp from your phone.
2) Obtain someone else’s phone which you want to access.
And find the MAC address of that phone. It’ll be in six pairs like- 01:43:65:87:98:cb
For Android, go to Settings – About phone – Status – WI-Fi MAC address.
For iPhone, go to Settings – General – About – WI-Fi Address.
For Windows phone, find this in Settings – About – More info – MAC address.
For BlackBerry, go to Options – Device – Device and Status info – WLAN MAC.
3) Now find your MAC address also and save both MAC addresses at any safe place.
4) Another step is install MAC spoofing apps for changing the MAC address of your phone. For iPhones install MacDaddy X or WifiSpoof. And for Android you can install some free apps like BusyBox and Terminal Emulator, which are available on google play store.
5) Now open app, in the terminal, type “IP link show” to see a list of interfaces. Identify the one that has your MAC address — for this example, we’ll use the eth0 interface.
6) In the terminal emulator, enter “IP link set eth0 address XX:XX:XX:XX:XX:XX” and “ip link set eth0 broadcast XX:XX:XX:XX:XX:XX“, where eth0 is the interface you identified and XX:XX:XX:XX:XX:XX is your target’s MAC address. To check that you’ve successfully changed your MAC address, enter “ip link show eth0.”
Install WhatsApp on your phone but do not enter your phone number, enter your target’s phone number to set up WhatsApp rather than your own. Now catch the target’s phone second and last time for receiving whatsapp verification code, after getting that code, delete that message from the target’s mobile phone. Now all tasks have been done ENJOY!!
7) When you no longer need to access your target’s WhatsApp account, change your MAC address back to what it was. By following the same method as above.