diff --git a/android/app/build.gradle b/android/app/build.gradle
index 529221630b..dd4178c4e9 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -72,6 +72,13 @@ android {
                     signingConfigs.release : signingConfigs.debug
         }
     }
+
+    lint {
+        // For docs on options available here:
+        //   https://developer.android.com/reference/tools/gradle-api/8.5/com/android/build/api/dsl/Lint
+        checkAllWarnings = true
+        warningsAsErrors = true
+    }
 }
 
 tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).configureEach {
diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index b65a33a68a..a0f602e899 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -15,7 +15,6 @@
             android:taskAffinity=""
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
-            android:networkSecurityConfig="@xml/network_security_config"
             android:hardwareAccelerated="true"
             android:windowSoftInputMode="adjustResize">
             <!-- Specifies an Android theme to apply to this Activity as soon as
diff --git a/android/app/src/main/res/drawable-v21/launch_background.xml b/android/app/src/main/res/drawable-v21/launch_background.xml
deleted file mode 100644
index f74085f3f6..0000000000
--- a/android/app/src/main/res/drawable-v21/launch_background.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Modify this file to customize your launch splash screen -->
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="?android:colorBackground" />
-
-    <!-- You can insert your own image assets here -->
-    <!-- <item>
-        <bitmap
-            android:gravity="center"
-            android:src="@mipmap/launch_image" />
-    </item> -->
-</layer-list>
diff --git a/android/app/src/main/res/drawable/launch_background.xml b/android/app/src/main/res/drawable/launch_background.xml
index 304732f884..f74085f3f6 100644
--- a/android/app/src/main/res/drawable/launch_background.xml
+++ b/android/app/src/main/res/drawable/launch_background.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- Modify this file to customize your launch splash screen -->
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="@android:color/white" />
+    <item android:drawable="?android:colorBackground" />
 
     <!-- You can insert your own image assets here -->
     <!-- <item>
diff --git a/android/app/src/main/res/xml/network_security_config.xml b/android/app/src/main/res/xml/network_security_config.xml
deleted file mode 100644
index 5dd42541df..0000000000
--- a/android/app/src/main/res/xml/network_security_config.xml
+++ /dev/null
@@ -1,29 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<network-security-config>
-    <!-- For reference on this file's semantics:
-           https://developer.android.com/training/articles/security-config#FileFormat -->
-    <base-config>
-        <!-- If the user has configured additional CAs on the device, trust those
-             too.  This can be useful for an internal Zulip server in a corporate
-             or institutional environment, and was a recurring user request:
-               https://github.com/zulip/zulip-mobile/issues/3312
-               https://github.com/zulip/zulip-flutter/issues/461 -->
-        <trust-anchors>
-            <certificates src="system" />
-            <certificates src="user" />
-        </trust-anchors>
-    </base-config>
-    <domain-config>
-        <!-- But revert to the default, stricter behavior — trusting only the
-             system CA list — where we know we can, which means for domains where
-             we know a legitimate cert will always come from a widely-trusted CA.
-             Specifically, we know this is the case for Zulip Cloud and other
-             domains operated by the core Zulip developers at Kandra Labs. -->
-        <domain includeSubdomains="true">zulipchat.com</domain>
-        <domain includeSubdomains="true">zulip.com</domain>
-        <domain includeSubdomains="true">zulip.org</domain>
-        <trust-anchors>
-            <certificates src="system" />
-        </trust-anchors>
-    </domain-config>
-</network-security-config>
diff --git a/tools/check b/tools/check
index 3acb65a725..48ea5615ab 100755
--- a/tools/check
+++ b/tools/check
@@ -362,6 +362,15 @@ run_android() {
     files_check android/ \
     || return 0
 
+    # This causes `android/gradlew` to exist, for `tools/gradle` to use.
+    flutter build apk --config-only \
+    || return
+
+    # For docs on this Android linter:
+    #   https://developer.android.com/studio/write/lint
+    tools/gradle -q :app:lint \
+    || return
+
     flutter build apk \
     || return