Until now, deleting something you sent or received in Messages only deletes the content for you,” according to Android Police ...

Tap the gear icon in the bottom ... Beam to send content to another Android 3. The content you want to beam will shrink to a smaller window, and you'll see the message "Tap to Beam." ...

To pin a chat, open WhatsApp and head over to the chat list. Long press the conversation you want to pin until options show ...