The three software indicators you need to distinguish
Many users confuse the operating system version with a device’s security status. In practice, three independent indicators define a phone’s software status: the main operating system version (such as Android 14 or iOS 17), the security patch (a specific date showing when the latest known vulnerabilities were fixed), and updates to installed apps. Mixing these up can lead you to think a phone is “up to date” when it actually has only the latest major operating system version and is missing more recent security fixes.
Google and Apple’s official documentation treats these concepts separately. On Android, the operating system version and security patch can advance independently; on iOS, Apple includes both in a single system update, but checking the date of the latest patch is still useful to confirm that the device is current. Not all devices receive these updates at the same time, and availability depends on the manufacturer, model and region.
How to check the Android version and security patch
The official way to check an Android device is through the Settings app. Go to System > Android version update (or About phone > Android version information, depending on the manufacturer). This screen displays two key details: the Android version installed and the date of the latest security patch. If the date shown is earlier than the latest one published by Google, there are fixes waiting to be applied.
It is important to note that the interface can vary significantly between manufacturers. Samsung, Xiaomi, Huawei and others include custom interfaces that change the route to these settings. However, the underlying information is the same: the system version and patch date. Not receiving an update notification does not guarantee that the device is up to date; you need to check the patch date manually to be sure. Google publishes monthly security bulletins, and manufacturers have a period in which to distribute them to their users.
How to find and install updates on an iPhone or iPad
The process is more unified on Apple devices. The official route is Settings > General > Software Update. The device shows the installed iOS or iPadOS version here and, if an update is available, offers to install it directly. Unlike Android, Apple does not display the security patch separately from the system version in the user interface; both are delivered together in a single update.
To check whether the device is current, compare its installed version with the latest version released by Apple. If they match, the device has the latest security patch available. There is no need to search for iOS security patches manually, because Apple includes them in system updates. However, it is advisable to leave automatic updates enabled so security fixes arrive without manual intervention.
Why one indicator does not prove that the others are up to date
A common mistake is to assume that having the latest major Android or iOS version means a device is completely secure. That is not true. On Android, it is possible to have Android 14 installed but a security patch from several months ago, leaving the device exposed to known vulnerabilities. The system version and security patch are separate indicators and must be checked separately to get a complete picture of security status.
On iOS, the situation is simpler because Apple combines both elements in a single update. Even so, a device may not receive the latest iOS version because of hardware limitations or because the model is obsolete. Update availability depends on the specific model, not just the system version. An older iPhone may be running iOS 16, the latest version it supports, but not receive the features in iOS 17, limiting its security status over the long term.
What to do if the device does not show an update
If the device does not show an available update, first check the security patch date (on Android) or the system version (on iOS) to confirm whether it is actually current. On Android, if the patch date is earlier than the latest one published by Google, contact the manufacturer to ask about the update. On iOS, if the installed version does not match the latest one released by Apple, the device is probably not compatible with the new version.
Another factor to consider is the internet connection. Updates require a stable connection and enough available storage. If the device does not have free space, the update will not be offered. On both systems, it is advisable to free up storage before checking for updates. If the problem persists, restarting the device and checking again may resolve temporary network or system errors.
Limits of the evidence and final considerations
This guide is based on official Google and Apple documentation, but it cannot predict when a specific device will receive an update. Release schedules vary by manufacturer, model and region. You cannot determine when support for a device will end without consulting the manufacturer’s specific policies. The information here is general and should be supplemented with the guidance provided by the manufacturer of the device in question.
In addition, update availability may be affected by external factors, such as the manufacturer’s ability to distribute patches or hardware compatibility. Not all devices receive updates at the same time, and some models may stop receiving security updates sooner than others. Users should be aware of these limitations and consider replacing a device if it stops receiving critical security patches.