diff --git a/res/values/strings.xml b/res/values/strings.xml
index 9880cc2..87a6b85 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -2,4 +2,17 @@
 <resources>
     <string name="app_name">PawletOS</string>
     <string name="app_summary">PawletOS device settings</string>
+
+    <string name="category_pawletos">PawletOS</string>
+    <string name="category_android">Android settings</string>
+
+    <string name="pref_version">Version</string>
+    <string name="pref_build_type">Build type</string>
+    <string name="pref_device">Device</string>
+
+    <string name="pref_android_version">Android version</string>
+    <string name="pref_android_codename">Version codename</string>
+    <string name="pref_security_patch">Security patch level</string>
+    <string name="pref_build_number">Build number</string>
+    <string name="pref_kernel_version">Kernel version</string>
 </resources>
diff --git a/res/xml/pawlet_settings.xml b/res/xml/pawlet_settings.xml
index b1510fe..76d5a7d 100644
--- a/res/xml/pawlet_settings.xml
+++ b/res/xml/pawlet_settings.xml
@@ -1,6 +1,42 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <!-- Add PawletOS-specific preferences here -->
+    <PreferenceCategory android:title="@string/category_pawletos">
+        <Preference
+            android:key="pawlet_version"
+            android:title="@string/pref_version"
+            android:selectable="false" />
+        <Preference
+            android:key="pawlet_build_type"
+            android:title="@string/pref_build_type"
+            android:selectable="false" />
+        <Preference
+            android:key="pawlet_device"
+            android:title="@string/pref_device"
+            android:selectable="false" />
+    </PreferenceCategory>
+
+    <PreferenceCategory android:title="@string/category_android">
+        <Preference
+            android:key="android_version"
+            android:title="@string/pref_android_version"
+            android:selectable="false" />
+        <Preference
+            android:key="android_codename"
+            android:title="@string/pref_android_codename"
+            android:selectable="false" />
+        <Preference
+            android:key="android_security_patch"
+            android:title="@string/pref_security_patch"
+            android:selectable="false" />
+        <Preference
+            android:key="android_build_number"
+            android:title="@string/pref_build_number"
+            android:selectable="false" />
+        <Preference
+            android:key="android_kernel"
+            android:title="@string/pref_kernel_version"
+            android:selectable="false" />
+    </PreferenceCategory>
 
 </PreferenceScreen>
diff --git a/src/me/pawlet/settings/PawletSettingsFragment.kt b/src/me/pawlet/settings/PawletSettingsFragment.kt
index 1cbc7a3..75da938 100644
--- a/src/me/pawlet/settings/PawletSettingsFragment.kt
+++ b/src/me/pawlet/settings/PawletSettingsFragment.kt
@@ -1,11 +1,45 @@
 package me.pawlet.settings
 
+import android.os.Build
 import android.os.Bundle
+import android.os.SystemProperties
+import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
 
 class PawletSettingsFragment : PreferenceFragmentCompat() {
 
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         setPreferencesFromResource(R.xml.pawlet_settings, rootKey)
+        populate()
+    }
+
+    private fun populate() {
+        setPref("pawlet_version",      SystemProperties.get("ro.pawlet.display.version", Build.UNKNOWN))
+        setPref("pawlet_build_type",   SystemProperties.get("ro.pawlet.releasetype",      Build.UNKNOWN))
+        setPref("pawlet_device",       Build.MODEL)
+
+        setPref("android_version",      Build.VERSION.RELEASE)
+        setPref("android_codename",     resolveCodename())
+        setPref("android_security_patch", Build.VERSION.SECURITY_PATCH)
+        setPref("android_build_number", Build.DISPLAY)
+        setPref("android_kernel",       System.getProperty("os.version") ?: Build.UNKNOWN)
+    }
+
+    private fun setPref(key: String, value: String) {
+        findPreference<Preference>(key)?.summary = value
+    }
+
+    private fun resolveCodename(): String {
+        val raw = SystemProperties.get("ro.build.version.codename", "REL")
+        if (raw != "REL") return raw
+        return when (Build.VERSION.SDK_INT) {
+            36   -> "Baklava"
+            35   -> "VanillaIceCream"
+            34   -> "UpsideDownCake"
+            33   -> "Tiramisu"
+            32, 31 -> "Snow Cone"
+            30   -> "RedVelvetCake"
+            else -> Build.VERSION.RELEASE
+        }
     }
 }