WhatsApp: This is a new feature on WhatsApp and it\u2019s available on both iOS and Android versions of the app. Make sure the app on your device is up to date. Go to the\u00a0Settings\u00a0tab, and tap on Account. On the\u00a0Account\u00a0screen, go to\u00a0Privacy. On the Privacy screen, look for the Groups option and tap it. On the Groups screen, you can choose who can, and who cannot invite you to a group. The default is set to \u2018Everyone\u2019. This means that anyone who has your phone number, regardless if you\u2019ve ever sent them a message can invite\/add you to a goup. The \u2018My Contacts\u2019 option allows only those users who you\u2019ve exchanged messages with, and added to your contacts to add you to a group. This means that, for the most part, you will only be added to groups by people you trust. The \u2018My Contacts Except\u2026\u2019 option allows you to exclude certain contacts from adding you to a WhatsApp group. This is the most restrictive option and you can use it to block invites from a contact who tends to add you to groups that aren\u2019t useful. The setting will have an impact on future group invites. If you\u2019re already a part of a group thread that was started by someone you do not know, or you were added by someone not in your contacts list, you will still remain a part of it. You can always leave a group by going to its details screen. If leaving a group puts you in a social bind, you can just mute it instead. A group chat can be muted for up to one year before it\u2019s automatically unmuted. A muted group chat won\u2019t send you notifications. The messages will be delivered silently and you can go back and read them whenever you want. Group members will not know that you\u2019ve muted the group however, they will know if you\u2019ve read a message or not.