Check whether your messaging app supports message recall or undo send
Open the conversation immediately
Long-press or right-click the message
Select Unsend, Recall, Delete for Everyone, or Remove for Everyone if available
Act quickly before the app’s time limit expires
If the app does not support unsending, delete the message from your device
Turn on airplane mode immediately if the message has not sent yet
Disable Wi-Fi and mobile data before the message sends
Contact the recipient and ask them to ignore the message if it cannot be unsent