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Its functionality resembles that of automated chat services commonly found on customer service websites, enabling users to interact with it by asking questions or seeking clarification on its responses. WhatsApp has increasingly drawn its innovation from competing services, such as a Telegram-inspired web version and features for groups. In May 2017, it was reported that WhatsApp users spend over 340 million minutes on video calls each day on the app. On August 24, 2014, Koum announced on his Twitter account that WhatsApp had over 600 million active users worldwide.

Version History

ChatGPT operates via its Generative Pre-trained Transformer, employing specialized algorithms designed to identify patterns within sequences of data. ChatGPT Mini currently includes the models gpt-4o-mini, gpt-4.1-nano, and gpt-4.1-mini. It is multimodal (accepting text or image inputs and outputting text), has higher intelligence than gpt-4o-mini («o» for «omni») but is just as fast. This iterative process of learning enhances ChatGPT’s proficiency over time, contributing to its ongoing improvement in generating more accurate and contextually appropriate responses. ChatGPT is an artificial intelligence (AI) chatbot that uses natural language processing to create humanlike conversational dialogue.

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On May 2, 2016, mobile providers in Brazil were ordered to block WhatsApp for 72 hours for the service’s second failure to cooperate with criminal court orders. In September 2017, security researchers reported to The New York vegas casino app Times that the WhatsApp service had been completely blocked in China. WhatsApp is owned by Meta, whose main social media service Facebook has been blocked in China since 2009. In May 2022, the FBI stated that an ISIS sympathizer, who was plotting to assassinate George W. Bush, was arrested based on his WhatsApp data. The messages involved discussing how to make an explosive device and a confession to the attack. In April 2017, the perpetrator of the Stockholm truck attack reportedly used WhatsApp to exchange messages with an ISIS supporter shortly before and after the incident.

In May 2014, WhatsApp crossed 50 million monthly active users in India, which is also its largest country by the number of monthly active users, then 70 million in October 2014, making users in India 10% of WhatsApp’s total user base. In May 2025, Meta reported WhatsApp had over 3 billion monthly active users globally. By February 2017, WhatsApp had over 1.2 billion users globally, reaching 1.5 billion monthly active users by the end of 2017. At that point WhatsApp was adding about 25 million new users every month, or 833,000 active users per day.

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A month earlier, after Koum purchased an iPhone, he and Acton decided to create an app for the App Store. In January 2018, WhatsApp released a standalone business app called WhatsApp Business which can communicate with the standard WhatsApp client. For more information, visit the developer’s accessibility website . Privacy practices may vary based, for example, on the features you use or your age.

Voice and video calling and notes

The Chat GPT chatbot is also useful for companies that want to generate content quickly. The most notable limitation of the free version is access to ChatGPT when the program is at capacity. ChatGPT Plus also gives priority access to new features for a subscription rate of $20 per month. When ChatGPT encounters a surge in users, it may reach its maximum capacity, particularly during peak hours like mornings or evenings, depending on the timezone.

The Windows version is based on UWP while the Mac version is a port of the iOS version using Catalyst technology. Originally it was required for the primary phone to keep an online connection to WhatsApp for linked devices to work, but now WhatsApp can run on linked devices without such requirement. Linked devices automatically log out after 14 days of inactivity on the primary phone. They link to and sync with WhatsApp actively running on a supported primary phone. As of 2025, the software requires at least Android version 5.0 or iOS version 15.1 respectively.

• The hack, allegedly developed by Israeli surveillance technology firm NSO Group, injected malware onto WhatsApp users’ phones via a remote-exploit bug in the app’s Voice over IP calling functions.
• WhatsApp uses a customized version of the open standard Extensible messaging and presence protocol (XMPP).
• By February 2017, WhatsApp had over 1.2 billion users globally, reaching 1.5 billion monthly active users by the end of 2017.

WhatsApp Web is accessed through web.whatsapp.com and access is granted after the user scans their personal QR code through their mobile WhatsApp client. In November 2025, WhatsApp announced that they would update their About feature, which allows users to add a short message to explain what they are doing. In December 2024, WhatsApp introduced a reverse image search feature, allowing users to verify image authenticity directly within the app using Google Search.

Linked and multi-device support

In June 2023, a feature called WhatsApp Channels was launched which allows content creators, public figures and organizations to send newsletter-like broadcasts to large numbers of users. In April 2023, the app rolled out a feature that would allow account access across multiple phones, in a shift that would make it more like competitors. In October 2019, WhatsApp officially launched a new fingerprint app-locking feature for Android users. In November 2024, the ability to transcribe voice messages was added, allowing users to read out what was said in a voice message, rather than listening to the audio.

• While there are no constraints on the types of questions users can ask, it’s essential to note that ChatGPT’s knowledge is limited to data available up to the year 2021.
• Previously the Android and Nokia Series 40 versions used an MD5-hashed, reversed-version of the phone’s IMEI as a password, while the iOS version used the phone’s Wi-Fi MAC address instead of the IMEI.
• This ability (named multi-device support) began testing in July 2021 and rolled out to all users in April 2023.

VoiceOver

You can access ChatGPT from anywhere in the world, without any restrictions, especially in countries ChatGPT is not available (Russia, China, Hong Kong, Iran,…). MiniToolAI’s ChatGPT is a free AI chatbot, unlimited and no registration required. In January 2020, WhatsApp reached over 5 billion installs on Google Play Store making it only the second non-Google app to achieve this milestone. According to the Financial Times, WhatsApp «has done to SMS on mobile phones what Skype did to international calling on landlines».

When this multi-device feature was first introduced to Android and iOS users, it could only show messages for the last three months on the Web version, because the Web version was syncing with the phone. Since the complete roll out of this feature, users cannot check old messages before this period on the Web version anymore. Similar to voice messages, this feature allows users to record and send short videos directly in a chat.

In May 2016, some WhatsApp users were reported to have been tricked into downloading a third-party application called WhatsApp Gold, which was part of a scam that infected the users’ phones with malware. The hack, allegedly developed by Israeli surveillance technology firm NSO Group, injected malware onto WhatsApp users’ phones via a remote-exploit bug in the app’s Voice over IP calling functions. The app collected data on who the users contacted and how often, and when and how they were using the app. There were a series of incidents between 2017 and 2020, after which WhatsApp announced changes for Indian users of the platform that labels forwarded messages as such. In November 2017, WhatsApp implemented a feature giving users seven minutes to delete messages sent by mistake. WhatsApp automatically compares all the phone numbers from the device’s address book with its central database of WhatsApp users to automatically add contacts to the user’s WhatsApp contact list.

What are the limitations of ChatGPT? How accurate is it?

A Wired report noted the attack was able to inject malware via calls to the targeted phone, even if the user did not answer the call. This is reportedly not an isolated occurrence, as federal agencies can use the Electronic Communications Privacy Act to covertly track users without submitting any probable cause or linking a user’s number to their identity. On November 29, 2021, an FBI document was uncovered by Rolling Stone, revealing that WhatsApp responds to warrants and subpoenas from law enforcement within minutes, providing user metadata to the authorities. The enforcement of the privacy policy was postponed from February 8 to May 15, 2021, WhatsApp announced they had no plans to limit the functionality of the app for those who did not approve the new terms. On December 16, 2020, a claim that WhatsApp gave Google access to private messages was included in the anti-trust case against the latter.

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However, the company did not reveal names of the end users, which according to a research by Citizen Lab include, Saudi Arabia, Bahrain, Kazakhstan, Morocco, Mexico and the United Arab Emirates. In December 2019, WhatsApp confirmed a security flaw that would allow hackers to use a malicious GIF image file to gain access to the recipient’s data. When a user deletes media for everyone, WhatsApp does not delete images saved in the iOS camera roll and so those users are able to keep the images. WhatsApp was criticized by security researchers and the Electronic Frontier Foundation for using backups that are not covered by end-to-end encryption and allow messages to be accessed by third-parties. In November 2020, UPI payments via WhatsApp were initially restricted to 20 million users, and to 100 million users in April 2022, and became generally available to everyone in August 2022. The feature has to be turned on by the user and provides the option to encrypt the backup either with a password or a 64-digit encryption key.

Some time in 2013 WhatsApp acquired Santa Clara–based startup SkyMobius, the developers of Vtok, a video and voice calling app. By February 2013, WhatsApp had about 200 million active users and 50 staff members. This new facility, to Koum’s surprise, was used by users to ping «each other with jokey custom statuses like, ‘I woke up late’ or ‘I’m on my way.'» Fishman said, «At some point it sort of became instant messaging». The idea started off as an app that would display statuses in a phone’s Contacts menu, showing if a person was at work or on a call. The service was created by WhatsApp Inc. of Mountain View, California, which was acquired by Facebook in February 2014 for approximately US$19.3 billion.

An integer overflow bug allowed a malicious user to take full control of the victim’s application once a video call between two WhatsApp users was established. At the beginning of 2022, it was revealed that San Diego–based startup Boldend had developed tools to hack WhatsApp’s encryption, gaining access to user data, at some point since the startup’s inception in 2017. In January 2022, an unsealed surveillance application revealed that WhatsApp started tracking seven users from China and Macau in November 2021, based on a request from US DEA investigators. Previously, users could opt-out of such data sharing, but the new policy removed this option. In January 2021, WhatsApp announced an updated privacy policy which stated that WhatsApp would share user data with Facebook and its «family of companies» beginning February 2021.

The model’s output can also track and profile individuals by collecting information from a prompt and associating this information with the user’s phone number and email. As technology progresses, ChatGPT stands poised to automate various tasks traditionally handled by humans, spanning data entry, customer service, and translation assistance. Additionally, users can furnish detailed written feedback to enhance and fine-tune future interactions. The continuous refinement of the chatbot relies on user feedback, facilitated by the provision of upvotes or downvotes through intuitive icons. Reasoning models such as o1, o3, and o4 are also available to ChatGPT Plus users.

On June 13, 2013, WhatsApp announced that they had reached their new daily record by processing 27 billion messages. In October 2020, Facebook announced the introduction of pricing tiers for services offered via the WhatsApp Business API, charged on a per-conversation basis. Another application called GB WhatsApp is considered malicious by cybersecurity firm Symantec because it usually performs some unauthorized operations on end-user devices.

In 2022, WhatsApp added the ability for users to turn off their online status. In March 2024, Meta announced that WhatsApp would let third-party messaging services enable interoperability with WhatsApp, a requirement of the EU’s Digital Markets Act (DMA). In August 2022, WhatsApp launched an integration with JioMart, available only to users in India.