WhatsApp has begun turning away logins from phones that run outdated software, and affected users now see a screen telling them to update their operating system before they can get back into their account. The change is a server side update, which means it does not depend on the version of WhatsApp installed on the phone. It is reaching specific users on both Android and iOS, and the company has not said which operating system versions trigger the block. Since the restriction is applied from the company servers, users cannot avoid it by installing a newer copy of the app, and the only way to resolve it is to bring the device software up to date.
According to WABetaInfo, the new screen asks users to open device settings and install the newest available update, after which they can log back into WhatsApp. People who do not know which version they are running will find instructions on the same screen that explain how to check it. There is no option to bypass this step, so the account remains locked for as long as the update has not been installed. The prompt is meant to guide users through a short process, yet it also makes clear that access depends entirely on the condition of the operating system, regardless of how recent the messaging app itself may be.
The reasoning behind the move relates to device security. Attackers search for weaknesses in outdated versions of operating systems so that they can place harmful software on a phone, and once a device is compromised they can reach data before WhatsApp encrypts it. Encryption only protects messages while they travel through the network, which leaves the device itself as a point of exposure when its software is old. Requiring an update before login therefore reduces the chance that an account is used on a phone with known weaknesses, even though WhatsApp has not publicly explained the exact criteria it applies to select users for this block.
The login block follows other recent security work by the company. In Android beta 2.26.35.1, WhatsApp began testing a warning on the linked devices screen for people who use unofficial WhatsApp Web clients, a step that came after the company notified around 200 users in Italy whose devices were compromised through a fake version of the app. WhatsApp has also worked on a scam alert feature that detects suspicious messages on the device, along with restricted chats that limit certain conversations to the primary device. Together with the new login screen, these features show a continued focus on protecting accounts from misuse.
Follow the SPIN IDG WhatsApp Channel for updates across the Smart Pakistan Insights Network covering all of Pakistan’s technology ecosystem.
