Android version and security patch level
Every Android phone shows two version numbers: the Android version (for example Android 15) and the Android security patch level, a date such as 2026-09-01 that tells which monthly security fixes are installed. Both are in Settings > About phone > Android version, and updates are installed from Settings > System > Software updates.
1Why the patch date matters
Google publishes the Android Security Bulletin every month with the vulnerabilities fixed in that patch level. A patch date many months old means known security problems remain open on the phone.
2Google Play system updates
Some system components are updated through Google Play system updates, shown separately with their own date under Security & privacy or About phone.
3When updates stop
Manufacturers support each model for a limited number of years. After that, no new patches arrive and the phone is best kept away from sensitive tasks.
How to check and update
- Open Settings > About phone > Android version.
- Note the Android version and the Android security update date.
- Open Settings > System > Software updates (or Software update on Samsung) and install what is offered.
- Restart when asked and check the date again.
Cautions
- Charge the phone and use Wi-Fi before a large update.
- Do not install system updates from unofficial websites.
Related articles
- Safe mode on AndroidWhat Android safe mode is, how to start it on Pixel, Samsung and other phones, and how to use it to find a problem app.
- Find Hub (formerly Find My Device)How Google's Find Hub locates, rings, secures or erases a lost Android phone, and what must be turned on in advance.
- Factory reset on AndroidWhat an Android factory reset erases, what to back up first, and how factory reset protection asks for your Google account afterwards.
Sources
- Check & update your Android version (Android Help) support.google.com
- Android Security Bulletins (Android Open Source Project) source.android.com
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