WhatsApp, a messaging app used by over 2 billion people globally, is essential for communication in Brazil, where around 165 million active users rely on it daily. However, many face access issues due to outdated operating systems, account bans, or cyberattacks. Starting in May 2025, the app will require iOS 15.1 or higher and Android 5.0, leaving older models, such as the iPhone 6S and devices with Android KitKat, unsupported. These obstacles, though frustrating, can be resolved with practical steps, from software updates to reversing account suspensions. This article outlines the main causes of WhatsApp failures and offers accessible solutions to restore access.
Incompatibility with operating systems is the primary reason WhatsApp stops working on older phones. Devices that cannot support the required versions simply lose the ability to run the app, particularly affecting users of models released before 2015. Additionally, violations of WhatsApp’s terms of service, such as using unofficial apps, can lead to temporary or permanent suspensions. Hackings and issues with recycled phone numbers further complicate matters, requiring swift action to secure accounts.
To avoid disruptions, keeping the phone’s system updated and adhering to WhatsApp’s guidelines are key steps. Meta, the company behind the app, emphasizes the importance of security and compatibility to ensure a reliable experience. With the right guidance, most issues can be resolved without needing to replace the device or lose access to conversations.
- Main causes of WhatsApp failures:
- Outdated operating systems (iOS below 15.1 or Android below 5.0).
- Accounts banned for violating terms of service.
- Hackings or use of recycled phone numbers.
Why does WhatsApp stop working?
The constant evolution of WhatsApp, with new features like enhanced video calls and privacy tools, demands modern operating systems. Starting in May 2025, devices with iOS below version 15.1, such as the iPhone 6 and 6S, will no longer be compatible. For Android, the minimum requirement will be version 5.0 (Lollipop), impacting popular models in Brazil, like the Samsung Galaxy S4 and the first-generation Motorola Moto G. This change reflects the need to support security and performance updates but leaves millions of users with older devices without access to the app.
Beyond incompatibility, using unofficial WhatsApp versions, such as GB WhatsApp or WhatsApp Plus, is a common cause of bans. These apps, which offer customized features, violate Meta’s terms of service and can trigger automatic suspensions. Sending spam, sharing illegal content, or using bots also leads to penalties, ranging from 24-hour temporary suspensions to permanent bans. In Brazil, where WhatsApp is widely used for business, these restrictions affect everyone from small entrepreneurs to casual users.
Another growing issue is recycled phone numbers. When a phone number is reassigned to a new user, they may inherit restrictions from the previous owner, such as bans for improper activities. Although Meta states that new users should not be penalized for prior actions, the review process can be lengthy, causing inconvenience.
How to update the operating system
Updating the operating system is the most straightforward solution to restore WhatsApp on compatible devices. On Android, the process starts in the device settings under “System” or “Software Update.” If a new version is available, the user should download it and restart the device. For iPhones, updates are done in “Settings” under “General” and “Software Update.” The process can take 10 minutes to an hour, depending on the connection and file size.
Not all devices, however, support the required versions. Models like the iPhone 5S, released in 2013, cannot upgrade to iOS 15.1, rendering them obsolete for WhatsApp. On Android, devices with less than 2 GB of RAM or older processors often face similar limitations. In these cases, the only option is to switch to a newer device, which can be challenging for users with limited budgets, especially in Brazil, where smartphone prices rose 15% in 2024.
For those who can update, backing up conversations beforehand is crucial. On Android, backups are saved to Google Drive, while on iOS, they are stored in iCloud. This precaution prevents the loss of messages and files, ensuring users can restore everything after the update.
- Steps to update the system:
- Android: Settings > System > Software Update > Download and Install.
- iOS: Settings > General > Software Update > Download and Install.
- Back up to Google Drive (Android) or iCloud (iOS) before updating.
Banned or suspended accounts: what to do?
Account bans are a strict measure enforced by WhatsApp to protect the platform. Violations like sending spam, using modified apps, or sharing prohibited content, such as pornography or misinformation, can lead to suspensions. In 2024, Meta banned over 7 million accounts monthly worldwide, with Brazil among the most affected countries due to its high user base. Temporary suspensions last 24 to 72 hours, while permanent bans require a review for reinstatement.
To request a review of a banned account, users should go to the “Help” section in the app or email [email protected]. It’s important to include details like the full phone number, including the country code (+55 for Brazil), and a clear explanation of the case. The review can take up to 48 hours, and Meta does not guarantee reinstatement, especially for severe violations like attempts to reverse-engineer the app.
Preventing bans is simpler than reversing them. Using only the official WhatsApp version, available on Google Play or the App Store, significantly reduces the risk. Avoiding mass automated messages and verifying the source of shared links also helps keep the account active. Small businesses using WhatsApp Business should adhere to the platform’s policies to avoid disruptions.
Issues with recycled numbers
Recycled phone numbers, reassigned to new users after a period of inactivity, are a common source of problems. In Brazil, operators like Vivo and Claro recycle numbers after 60 to 90 days of inactivity, and the new owner may face restrictions inherited from the previous user, such as bans for spam or fraud. In 2023, about 5% of mobile numbers in the country were recycled, according to telecommunications data.
Resolving this issue requires patience. Users must contact WhatsApp support, informing them that the number is new and requesting a review. Meta conducts an analysis to disassociate the number from prior infractions, but the process can take days. During this time, access to the app remains blocked, which can be particularly harmful for those relying on WhatsApp for work or personal contacts.
To avoid complications, it’s advisable to register the number with services like WhatsApp immediately after chip activation. This reduces the chance of the number being linked to improper activities by others. Additionally, keeping an updated backup facilitates transitioning to a new number if the issue persists.
Phones with root or custom ROMs
Android devices with root access or custom ROMs, such as LineageOS, often face issues with WhatsApp. Rooting, which grants full system access, and custom ROMs, which replace the original Android system, are deemed insecure by Meta, as they can compromise the app’s encryption. Around 3% of Android users in Brazil use rooted devices, according to 2024 estimates, primarily on older models.
The solution is to remove the root or reinstall an official Android version. Tools like Magisk can undo rooting, but the process requires technical knowledge and may erase device data. Restoring the factory system is another option, though more time-consuming. For users without expertise, professional assistance is necessary, with costs ranging from $10 to $40, depending on the region.
Those who persist in using custom ROMs should be aware of the risks, including inability to access other banking or messaging apps. Meta offers no support for these devices, and attempts to bypass restrictions can lead to permanent bans.
- Solutions for root or custom ROMs:
- Remove root using tools like Magisk or SuperSU.
- Restore the original Android via factory reset.
- Seek technical assistance to avoid data loss.
How to recover a hacked account
WhatsApp account hacking is a growing issue, with over 500,000 cases reported in Brazil in 2024. Scams like phishing, where users are tricked into sharing verification codes, or SIM card cloning allow criminals to take control of accounts. Once compromised, accounts can be used to send fraudulent messages or access private conversations.
To recover the account, the first step is to uninstall and reinstall WhatsApp, requesting a new verification code. Next, users should go to “Linked Devices” and disconnect unauthorized sessions. Enabling two-step verification, which requires a six-digit PIN, is critical to prevent further attacks. Contacting WhatsApp support with incident details speeds up the recovery process.
If the hacker continues using the number, filing a police report is essential. Brazilian authorities, such as the Civil Police, have cybercrime units that investigate these cases. Protecting the number with the carrier, requesting anti-cloning measures, also reduces future risks.
Blocked or lost SIM card: what to do?
Losing a SIM card or having a number blocked due to lack of recharge is another common issue. In Brazil, about 10% of prepaid line users face annual blocks, according to Anatel data. To recover the account, users should contact the carrier to request a new SIM with the same number, a process that takes 1 to 3 days and costs up to $4.
If recovering the number is not possible, WhatsApp allows temporary account deactivation via support, preventing unauthorized access. Users can then register a new number but will need to restore conversation backups, requiring access to Google Drive or iCloud. Keeping the number active with regular recharges prevents these issues, especially for prepaid lines.
Businesses relying on WhatsApp Business must be extra cautious. Losing a number can disrupt client communications, causing financial losses. Setting up a fixed or virtual number for WhatsApp Business is an alternative for greater stability.
Alternatives for incompatible devices
When system updates are not feasible, purchasing a new smartphone is the definitive solution. Budget models like the Samsung Galaxy A14 or Xiaomi Redmi 12, starting at $160 in Brazil, meet WhatsApp’s requirements. For those unable to invest immediately, using WhatsApp Web on a computer or tablet is a temporary fix, though it requires a constant connection to the primary phone.
Another option is switching to alternative apps like Telegram or Signal, which support older systems. However, WhatsApp’s dominance in Brazil, where 99% of smartphones have the app installed, makes transitioning difficult. Small businesses, in particular, rely on the platform for sales and support, with 70% of micro-entrepreneurs using WhatsApp Business, according to 2024 research.
Governments and NGOs have launched digital inclusion programs to facilitate access to modern smartphones. In São Paulo, for example, initiatives like “Conecta SP” distributed 10,000 refurbished devices in 2024, helping low-income communities stay connected.
- Alternatives for obsolete devices:
- Buy a compatible smartphone (starting at $160).
- Use WhatsApp Web on computers or tablets.
- Switch to Telegram or Signal on older devices.
Prevention to avoid future issues
Preventing WhatsApp issues requires simple maintenance and security practices. Regularly updating the operating system, even before the app demands it, ensures long-term compatibility. Setting up two-step verification and avoiding sharing verification codes are effective measures against hackings. For businesses, using the Business version with frequent backups minimizes data loss risks.
Monitoring phone number usage is also crucial. Prepaid line users should keep the SIM active, while those with recycled numbers should register them immediately on WhatsApp. Avoiding unofficial apps and suspicious links reduces the risk of bans and scams, which affected 1.2 million Brazilians in 2024, according to digital security estimates.
Digital education is another key pillar. Campaigns by Meta and carriers, like “Stay Safe on WhatsApp,” provide guidance on best practices, reaching 20 million users in Brazil in 2024. Adopting these measures not only protects the account but also extends the app’s usability on the device.
WhatsApp update timeline
WhatsApp follows a strict schedule for discontinuing support for older systems, aligned with technological advancements. The 2025 changes reflect the obsolescence of versions like Android 4.4 and iOS 12, which cannot handle modern features like enhanced encryption. Below is a summary of recent requirements:
- 2023: Support ended for Android 4.4 (KitKat) and iOS 11.
- 2024: Minimum requirement of Android 4.4.4 and iOS 12.
- 2025: Starting in May, Android 5.0 (Lollipop) and iOS 15.1.
These updates are announced in advance on WhatsApp’s official website and via in-app notifications, giving users time to adapt. Planning device upgrades or system updates based on this timeline prevents surprises and ensures continuous access.
Impact in Brazil and collective solutions
Brazil, with its reliance on WhatsApp for personal and professional communication, feels the impact of the app’s changes deeply. In rural areas, where older smartphones are common, digital exclusion is a real risk. About 15% of the Brazilian population uses devices over 5 years old, according to 2024 data, amplifying the challenge of maintaining access.
Collective solutions, like electronics recycling programs and smartphone subsidies, are gaining traction. Anatel, in partnership with manufacturers, launched the “Affordable Phone” program in 2024, offering up to 30% discounts on models compatible with 5G and recent systems. These initiatives are vital for reducing digital inequality, especially in low-income communities.
Civil society also plays a role. NGOs like the Tech For Good Institute distribute refurbished smartphones and offer digital literacy workshops, benefiting 50,000 people in Brazil in 2024. These efforts help keep WhatsApp accessible, reinforcing its role as a tool for social inclusion.
- Digital inclusion initiatives:
- Affordable Phone Program: Discounts on modern smartphones.
- Conecta SP: Distribution of 10,000 refurbished devices.
- Tech For Good: Digital literacy workshops for 50,000 people.
