How can I block a group chat in Whatsapp? I want to block a group chat from my Whatsapp, but I have no option on my Samsung Galaxy S5. Does anyone have any solution to this problem?
Unfortunately, WhatsApp doesn't allow you to block a group per se. You can however, exit the group. And/or mute it.

To exit the group, click on the conversation header to show "Group info", then Exit Group