To remove your profile picture, proceed as follows:
Android
Open the “My Profile” tab
Tap on the camera icon in the current profile picture
Select “Remove image”
iOS
Navigate to the “Profile” tab, select “Edit,” and tap the cross next to your current profile picture
For privacy reasons, profile pictures are not stored on a server. The next time you send someone a message, your profile picture will be removed automatically on the recipient’s end. Alternatively, you can immediately remove your profile picture from someone’s contact list by tapping “Send profile picture now” in the contact’s detail view.