diff --git a/CHANGELOG.md b/CHANGELOG.md
index 67dbfe3..5e9e19b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,9 @@
     V3.2.0 - (NEXT VERSION!)
         - Added neural network based data analysis.
 
+    V3.1.8 - 06jun2019
+        - Added READ_PHONE_STATE permission which seems to be needed for some phones to send SMS (but not many).
+
     V3.1.7 - 28apr2919
         - Added Mute function from watch Menu button.
 
diff --git a/app/release/app-release-3.1.8.apk b/app/release/app-release-3.1.8.apk
new file mode 100644
index 0000000..e3f2dcd
Binary files /dev/null and b/app/release/app-release-3.1.8.apk differ
diff --git a/app/release/output.json b/app/release/output.json
index 2d158b6..93b32ef 100644
--- a/app/release/output.json
+++ b/app/release/output.json
@@ -1 +1 @@
-[{"outputType":{"type":"APK"},"apkData":{"type":"MAIN","splits":[],"versionCode":61,"versionName":"3.1.7","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]
\ No newline at end of file
+[{"outputType":{"type":"APK"},"apkData":{"type":"MAIN","splits":[],"versionCode":62,"versionName":"3.1.8","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 1987cde..1112943 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="uk.org.openseizuredetector"
-    android:versionCode="61"
-    android:versionName="3.1.7"
+    android:versionCode="62"
+    android:versionName="3.1.8"
     >
     <!--android:allowBackup="false"-->
 
@@ -18,6 +18,7 @@
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
+    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
 
     <uses-feature
         android:name="android.hardware.telephony"
diff --git a/app/src/main/java/uk/org/openseizuredetector/StartupActivity.java b/app/src/main/java/uk/org/openseizuredetector/StartupActivity.java
index ad93ee0..bff1caa 100644
--- a/app/src/main/java/uk/org/openseizuredetector/StartupActivity.java
+++ b/app/src/main/java/uk/org/openseizuredetector/StartupActivity.java
@@ -505,6 +505,7 @@ public class StartupActivity extends Activity {
                             + "\n  V3.1.3 - Added delay to SMS sending to give the user chance to cancel a false alarm."
                             + "\n  V3.1.5 - Added repeat alarm beeps during SMS delay to alert user.."
                             + "\n  V3.1.6 - Made Cancel Audible button inhibit sending SMS alarms as well as audible beeps"
+                            + "\n  V3.1.8 - Added READ_PHONE_STATE permission, which seems to be needed for some phones"
                 );
             // This makes the links display as links, but they do not respond to clicks for some reason...
             Linkify.addLinks(s, Linkify.ALL);
@@ -538,6 +539,7 @@ public class StartupActivity extends Activity {
                             + "\n  V3.1.3 - Added delay to SMS sending to give the user chance to cancel a false alarm."
                             + "\n  V3.1.5 - Added repeat alarm beeps during SMS delay to alert user.."
                             + "\n  V3.1.6 - Made Cancel Audible button inhibit sending SMS alarms as well as audible beeps"
+                            + "\n  V3.1.8 - Added READ_PHONE_STATE permission, which seems to be needed for some phones"
                             + "\n "
             );
             // This makes the links display as links, but they do not respond to clicks for some reason...