There isn't specific recent "news" focused on changes to how Whatsapp allows users or third parties to get user information by ID. However, based on the current understanding of the Whatsapp API and privacy practices (as of May 20, 2025), here's what's generally true:
Whatsapp API (users.getFullUser): The Whatsapp API method users.getFullUser allows developers (primarily bots and applications with the necessary authorization) to retrieve extended information about a user given their ID. This information can include their username, profile picture, presence status, and other publicly available details. However, this requires having the user's ID in the first place and using the API.
Privacy Restrictions: While the API allows ecuador whatsapp number data access to some user information by ID, it's crucial to understand that it respects user privacy settings. For example, if a user has set their phone number to be visible only to their contacts or nobody, this information will not be exposed through the users.getFullUser method to unauthorized entities.
Bots and User Interaction: For a bot to obtain a user's ID in the first place, the user typically needs to interact with the bot (e.g., by starting a chat or sending a command). Once there's an interaction, the bot can usually access the user's ID.
No Public Lookup by ID: There isn't a public-facing feature within the standard Whatsapp apps that allows regular users to simply input a user ID and retrieve all their information, especially if that information is set to private.
tg://user?id=<user_id> Links: As mentioned in previous responses, you can create a tg://user?id=<user_id> link. Clicking this link might open a chat with the user if they haven't blocked you and if they have a public profile. However, it doesn't directly reveal their username if they haven't set one or other private information.
getUserProfilePhotos: The Whatsapp Bot API and TDLib have methods like getUserProfilePhotos that allow you to get a list of a user's profile pictures using their ID. This is another piece of publicly available information.