What is whatsapp? How to use whatsapp

WhatsApp is a cross-platform encrypted instant messaging application for smart phones, through which users can send and receive information, pictures and other operations for free. It can also be used for voice calls and video calls, as well as sending short messages, document files, PDF files, pictures, videos, music, contact information, user locations and recorded files to other users using standard mobile network phone numbers.

To use WhatsApp, you need to download and install the software first, and enter the mobile phone number for registration verification. When registering, you need to enter your mobile phone number and receive a verification message, and then WhatsApp will search your mobile phone contacts for people who are already in use and automatically add them to your mobile phone contact list.

When using WhatsApp, users can long press a message and then select Delete, or swipe the message to the left, click the trash can icon, and finally select OK to delete the message. At the same time, there will be a display banner at the top of each message. Click this banner to reply, delete and cancel the reminder.

In fact, there are many similar apps abroad, such as Telegram, Signal and iMessage. Unfortunately, such software can't be used normally in China, but local bat can be used to solve this problem.

This software not only uses end-to-end encryption algorithm, but also has many privacy protection functions such as device lock, preset secret letter and two-way withdrawal.

After turning on two-way recall, you can recall all chat records with one click, leaving no trace.

In general, WhatsApp is a very good App in the world, which can protect privacy well. Unfortunately, it can't be used normally in China. Fortunately, this problem can be solved by the local software in this paper. In this era of big data, once privacy is leaked, it means social death, and privacy protection needs to be put on the agenda.