diff --git a/Tethering/res/values-mcc310-mnc004-ja/strings.xml b/Tethering/res/values-mcc310-mnc004-ja/strings.xml
new file mode 100644
index 0000000..63ddc47
--- /dev/null
+++ b/Tethering/res/values-mcc310-mnc004-ja/strings.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--  Copyright (C) 2020 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+ -->
+
+<resources xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
+    <string name="no_upstream_notification_title" msgid="221932678126754542">"アクセス ポイントがインターネットに接続されていません"</string>
+    <string name="no_upstream_notification_message" msgid="4145932079850792642">"デバイスをインターネットに接続できません"</string>
+    <string name="no_upstream_notification_disable_button" msgid="2164668551525869970">"アクセス ポイントを OFF にする"</string>
+    <string name="upstream_roaming_notification_title" msgid="8448552978815624701">"アクセス ポイント: ON"</string>
+    <string name="upstream_roaming_notification_message" msgid="6724434706748439902">"ローミング時に追加料金が発生することがあります"</string>
+    <string name="upstream_roaming_notification_continue_button" msgid="8390621437856451758">"続行"</string>
+</resources>