Previously, Apple had just released an iOS 18.3.1 update for iPhone users. This update was rolled out only a few weeks after iOS 18.3 was launched.
Quoted from Cnet, Tuesday (11/2/2025), iOS update 18.3.1 does not offer much new features. However, through this update, Apple focuses on security aspects.
The company says that iOS 18.3.1 is present to add to the exploited security gap. Therefore, all iPhone users are advised to immediately download this update.
According to Apple, the security gap that was improved through the iOS 18 update was likely to have been used to attack the official individuals officially released iOS 18.3.1 with the improvement of security gaps exploited in Serangu. Although not necessarily all affected, this update is still important to improve the security of the device.
In addition, this iOS 18.3.1 update helps users get better protection than cyber threats. To download it, users just open the Settings menu, select General, tap the update software and update now.
Afterwards, follow the instructions on the screen until the entire update process is complete. Not only adds security gaps, this iOS update still maintains the USB Restricted Mode feature to improve the security of iPhone user data.
This feature will prevent USB accessories connected to the iPhone if the device has been locked for one hour. This feature is said to be quite effective in preventing hackers that utilize port lightning to access data on the device.