Method 1. Easiest Method: By Using Whatsapp PC version
Follow the below steps-1. All you need to do is openin your pc browser.
2. Then go to his/her Whatsapp messenger app > options > WhatsApp web.
3. Now scan the QR code which is being displayed in your pc screen and you are ready to go. You can now see all WhatsApp chats of your friend.
4. Do not forget to check ‘Keep me logged in‘ option for future usages.
Note: For this method to work, i.e., whenever you want to access your friend’s WhatsApp, his/her should be connected to working internet connection.
Method. 2 By Using Target’s Phone
Step. 1 First of all, completely uninstalls WhatsApp from your phone.
Step. 2 Obtain someone else’s phone which you want to access.
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.
Step. 7 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!!
Method. 3 – By Using WhatsApp Sniffer
It is for a rooted Android phone and having connected to the same WIFI network
WhatsAppSniffer is a tool for root terminals to read WhatsApp conversations of a WIFI network (Open, WEP, WPA/WPA2). It captures the conversations, pictures / videos and coordinates that are sent or received by an Android phone on the same WIFI network.
For WPA/WPA2 encrypted networks if uses the tool ARPSpoof (optional).”
Method. 4 – Using WhatsApp Spy Apps