WhatsApp has racked up multiple versions with several hidden tricks over the last 10 years, some of them possibly unknown to some of the 1.5 billion monthly active users. These are functions that involve ways of interacting with the app unseen, or discovering sensitive information, such as people who blocked you or recorded your number in the phonebook. Here are five WhatsApp features for Android and iPhone (iOS) phones that you probably don't know about.
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1. Read deleted messages for everyone
Since November 2017, WhatsApp has been able to delete messages for all members of the conversation within seven minutes of sending or longer by releasing a trick. Few know, however, that the mechanism can be circumvented on Android to circumvent the removal of the content (in text and audio). The secret is to use the Notification History app, which allows you to retrieve the notifications history from your mobile phone and read any text or voice message you have received, even if it has already been deleted from the chat. How the app works is to save a history of the notifications you receive. So, even if something is deleted in WhatsApp, it gets recorded in the app and you can access it later.
Notification History app lets you read and listen to deleted WhatsApp messages Photo: Play / Helito Beggiora
2. Know if a contact added their number to the calendar
Not adding a contact number to the phonebook is an old trick to hide from someone without having to block it. But, the solution is not foolproof: with functions offered by WhatsApp itself, you can find out if anyone did it to you. The first thing to note is if the contact appears without a photo, is not online, and has no posts on WhatsApp Status, but can still interact with you.
If the doubt remains, you can try another solution involving transmission lists: only contacts who have your address book number receive such messages. See how to test on Android or iOS.
Step 1. Access the WhatsApp menu and create a new transmission list;
Create a broadcast list in WhatsApp Photo: Reproduction / Paulo Alves
Step 2. Select at least two contacts, one suspected of not having your number and one that you are sure you have. Send any message in the conversation;
Add to the list a contact who may not have your calendar number Photo: Reproduction / Paulo Alves
Step 3. Press the sent message to open the drop down menu and tap the i at the top (on iPhone, the button is named Data). Take a look at the delivery confirmation list: If the contact didn't really record his number, he'll never show up there.
See if the suspicious contact appears in the delivery list Photo: Reproduo / Paulo Alves
3. Know if the contact read the message (even without blue check)
Audios always send playback receipt when they are heard, so they can be used to find out when a contact has read your message even if they have turned off read verification (blue check). Open a conversation where the person is suspected to have read, but insists on not replying, and send an audio. If the blue ticks appear next to it, the text content sent above has already been read.
WhatsApp audio always shows blue check Photo: Reproduction / Raquel Freire
4. Listening to hidden audio
If you are on the other side of the conversation and do not want incoming audio to report you, you can circumvent WhatsApp's behavior with an ingenious solution. First, add your own number to the phonebook and start a chat with yourself. From then on, simply forward the audio to this chat and listen there without being discovered by the sender. Blue checks do not appear and therefore messages can be reproduced undetected.
WhatsApp hears a conversation with himself not to be discovered Photo: Reproduction / Helito Bijora
5. Find out who blocked you
There are at least five ways to find out if anyone has blocked you on WhatsApp. Check first if the contact displays online status and last seen. It is also important to pay attention to the profile photo: if it does not appear or, mainly, suddenly no longer appears. It's also worth trying to add the person to new groups, make voice or video calls, and check the behavior of the messages you send: if nothing is delivered, the person is likely to have you blocked.
Profile photo not shown to people who have been blocked on WhatsApp Photo: Reproduo / Carolina Ribeiro