To delete a message on Signal from the mobile app, tap and hold your finger on it; on the desktop version, click the three dots next to it.

You can use Snapchat to send text messages, photos, and videos that disappear quickly after they are viewed, alongside a host of other features.

Facebook Inc said on Wednesday it would start replacing the direct messaging service within Instagram with a version of its Messenger app, the first major step in its plan to tie together messaging ...