To use Messenger without using data, you can connect to a Wi-Fi network. Messenger is designed to work on both Wi-Fi and cellular networks, so if you are connected to Wi-Fi, you can use Messenger without using any data from your mobile plan.
If you don't have access to Wi-Fi, some mobile carriers offer plans that include free data for specific apps, such as Messenger. If your mobile plan includes free data for Messenger, you can use Messenger without using your mobile data by enabling the "Data Saver" option in Messenger settings. This will limit the amount of data that Messenger uses, reducing the amount of data that you consume.
To enable "Data Saver" on Messenger, follow these steps:
Open Messenger and tap on your profile picture in the top left corner.
Scroll down and select "Data Saver."
Toggle on the "Data Saver" switch.
When "Data Saver" is enabled, Messenger will reduce the quality of images and videos to save data. You will still be able to send and receive messages, make calls, and use other Messenger features without using your mobile data.