Nowadays, users can send photo messages as well as text messages, which means that people can share photos with friends and family. Text messaging is useful if you need to get in contact quickly with someone.
Whilst you can have up to three pages of characters in a text, the text message is sent all at once, meaning that if the recipient does not have enough room in their inbox on their phone, then they will not receive the whole of it straight away, and it will only be displayed in parts. In this way, text messages may not be useful for urgent messages, as it is impossible to explain everything in one whole text message and have it reach the recipient straight away. They're still good for a simple form of communication though, and users can add a text message to their photo message if they wish. It's also useful for people who do not have a computer.