Android is a popular mobile operating system that has been in use for many years now. It has a lot of features and can be used on different devices. One of the features that Android offers is the ability to send notifications. This is a way for you to know about important events or changes that have happened in your surroundings. When you receive a notification, you can either read it or answer it. If you answer it, the notification will stop being sent. If you read it, the notification will stay in your inbox and you will be able to see it when you next get a chance to look at it.