diff --git a/android/.gitignore b/android/.gitignore
index 30b8e41a..dcb41468 100644
--- a/android/.gitignore
+++ b/android/.gitignore
@@ -66,7 +66,10 @@ keystore.properties
 .cxx/
 
 # Google Services (e.g. APIs or Firebase)
-google-services.json
+# google-services.json은 비밀정보가 아니다(API 키는 패키지명+SHA-1로 제한됨).
+# 무시하면 다른 머신·CI에서 google-services 플러그인이 조용히 미적용되어
+# Firebase 리소스 없는 APK가 나오고 푸시가 에러 없이 죽는다(#361).
+# google-services.json
 
 # Freeline
 freeline.py
diff --git a/android/app/google-services.json b/android/app/google-services.json
new file mode 100644
index 00000000..24578066
--- /dev/null
+++ b/android/app/google-services.json
@@ -0,0 +1,29 @@
+{
+  "project_info": {
+    "project_number": "266626418049",
+    "project_id": "finders-firebase",
+    "storage_bucket": "finders-firebase.firebasestorage.app"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:266626418049:android:97d15cca1a967db201d480",
+        "android_client_info": {
+          "package_name": "com.finders"
+        }
+      },
+      "oauth_client": [],
+      "api_key": [
+        {
+          "current_key": "AIzaSyBLFOVwkDrk0p_PjsTzt1WsTygQnoPDyUI"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": []
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}
diff --git a/android/app/proguard-rules.pro b/android/app/proguard-rules.pro
index f1b42451..4d949284 100644
--- a/android/app/proguard-rules.pro
+++ b/android/app/proguard-rules.pro
@@ -19,3 +19,10 @@
 # If you keep the line number information, uncomment this to
 # hide the original source file name.
 #-renamesourcefileattribute SourceFile
+
+# Kakao SDK는 모델을 kotlinx.serialization으로 다루는데 KakaoJson이 serializer를
+# 리플렉션으로 찾는다. R8은 그 참조를 못 봐서 컴파일 시 생성된 $$serializer/Companion을
+# 통째로 지우고, 저장된 토큰을 읽는 순간 SerializationException이 난다(#361).
+# SDK의 consumer 룰은 액티비티만 keep한다. 2.23.0 기준 @Serializable 클래스는
+# 전부 *.model 패키지 안에 있다(auth/common/share/template/user).
+-keep class com.kakao.sdk.**.model.* { <fields>; }
diff --git a/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_background.xml b/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_background.xml
deleted file mode 100644
index 26888508..00000000
--- a/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_background.xml
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<inset xmlns:android="http://schemas.android.com/apk/res/android"
-    android:drawable="@mipmap/ic_launcher_background"
-    android:inset="16.7%" />
\ No newline at end of file
diff --git a/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_foreground.xml b/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_foreground.xml
deleted file mode 100644
index 20538935..00000000
--- a/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_foreground.xml
+++ /dev/null
@@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<inset xmlns:android="http://schemas.android.com/apk/res/android"
-    android:drawable="@mipmap/ic_launcher_foreground"
-    android:inset="16.7%" />
\ No newline at end of file