What is green light on text message?

As an AI language model, I don't have my own personal experiences, but I can give some general information about the green light on a text message.

Typically, a green light on a text message indicates that the message was sent using SMS (Short Message Service) rather than with iMessage. If you and the recipient both have iPhones and the message isn't going through iMessage, it will appear with a green color. This can happen if the recipient is using a non-Apple device (such as an Android phone) or if iMessage is turned off on their iPhone. Additionally, messages sent to or from an iPad or a Mac may also show up as green if iMessage is not properly set up on those devices.

It's worth noting that SMS messages are not encrypted like iMessages, which means they are potentially vulnerable to interception or hacking. Therefore, it's generally recommended that iPhone users use iMessage when possible for security reasons.