WhatsApp is a popular messaging application used by millions of people around the world. While it is a great way to stay in touch with friends, family, and colleagues, there may be times when you want to block someone from contacting you. This could be for various reasons, such as harassment or spam messages. Here's how to block users on WhatsApp:

1. Open WhatsApp and go to the chat of the person you want to block.
2. Tap on their name or profile picture at the top of the chat.
3. Scroll down to the bottom of the screen and tap on “Block Contact.”
4. You will be asked to confirm that you want to block the person. Tap on "Block" to proceed.
5. The person will now be blocked, and you will no longer receive any messages or calls from them. They will not be able to see your online status or profile picture.
6. If you change your mind and want to unblock the person, go to "WhatsApp Settings" > "Account" > "Privacy" > "Blocked Contacts." Tap on the contact you want to unblock, and then tap on "Unblock Contact."

Blocking someone on WhatsApp is a simple process, but it can be an effective way to deal with unwanted messages and calls. It is important to note that blocking someone on WhatsApp does not mean they are blocked on your phone. They can still contact you through other means, such as phone calls or text messages.

In addition to blocking someone, there are other privacy settings you can adjust on WhatsApp to control who can see your profile picture, status, and last seen time. You can also choose to share your status with only certain contacts or hide it altogether.

It is important to remember that blocking someone should be a last resort. If someone is harassing you, it is important to report them to the appropriate authorities. If you are receiving spam messages, you can also report them to WhatsApp.

In conclusion, blocking users on WhatsApp is a simple process that can be done in a few steps. It is a great way to deal with unwanted messages and calls, but it is important to remember that it is not a solution to all problems. It is important to report harassment and spam messages to the appropriate authorities and take other measures to protect your privacy and safety online.