This should fix issue when running on Android < 19

src/org/linphone/KeepAliveReceiver.java

@@ -18,6 +18,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
 package org.linphone;
 
+import org.linphone.compatibility.Compatibility;
 import org.linphone.core.LinphoneCore;
 import org.linphone.core.LinphoneCoreFactory;
 import org.linphone.mediastream.Log;
@@ -57,9 +58,9 @@ public class KeepAliveReceiver extends BroadcastReceiver {
 					//make sure the application will at least wakes up every 10 mn
 					Intent newIntent = new Intent(context, KeepAliveReceiver.class);
 					PendingIntent keepAlivePendingIntent = PendingIntent.getBroadcast(context, 0, newIntent, PendingIntent.FLAG_ONE_SHOT);
-					((AlarmManager) context.getSystemService(Context.ALARM_SERVICE)).setExact(AlarmManager.ELAPSED_REALTIME_WAKEUP
+
-																					, SystemClock.elapsedRealtime() + 600000
+					AlarmManager alarmManager = ((AlarmManager) context.getSystemService(Context.ALARM_SERVICE));
-																					, keepAlivePendingIntent);
+					Compatibility.scheduleAlarm(alarmManager, AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 600000, keepAlivePendingIntent);
 				}
 			} else if (action.equalsIgnoreCase(Intent.ACTION_SCREEN_ON)) {
 				Log.i("[KeepAlive] Screen is on, enable");

src/org/linphone/LinphoneService.java

@@ -288,9 +288,8 @@ public final class LinphoneService extends Service {
 		//make sure the application will at least wakes up every 10 mn
 		Intent intent = new Intent(this, KeepAliveReceiver.class);
 		PendingIntent keepAlivePendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_ONE_SHOT);
-		((AlarmManager) this.getSystemService(Context.ALARM_SERVICE)).setExact(AlarmManager.ELAPSED_REALTIME_WAKEUP
+		AlarmManager alarmManager = ((AlarmManager) this.getSystemService(Context.ALARM_SERVICE));
-																		, SystemClock.elapsedRealtime() + 600000
+		Compatibility.scheduleAlarm(alarmManager, AlarmManager.ELAPSED_REALTIME_WAKEUP, SystemClock.elapsedRealtime() + 600000, keepAlivePendingIntent);
-																		, keepAlivePendingIntent);
 		
 		mWindowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
 	}

src/org/linphone/compatibility/ApiElevenPlus.java

@@ -5,6 +5,7 @@ import java.util.ArrayList;
 import org.linphone.R;
 
 import android.annotation.TargetApi;
+import android.app.AlarmManager;
 import android.app.Notification;
 import android.app.PendingIntent;
 import android.content.ContentUris;
@@ -168,4 +169,8 @@ public class ApiElevenPlus {
 	public static void setTextAppearance(TextView textview, Context context, int style) {
 		textview.setTextAppearance(context, style);
 	}
+
+	public static void scheduleAlarm(AlarmManager alarmManager, int type, long triggerAtMillis, PendingIntent operation) {
+		alarmManager.set(type, triggerAtMillis, operation);
+	}
 }

src/org/linphone/compatibility/ApiNineteenPlus.java

@@ -0,0 +1,32 @@
+package org.linphone.compatibility;
+
+import android.annotation.TargetApi;
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+
+/*ApiNineteenPlus.java
+Copyright (C) 2012  Belledonne Communications, Grenoble, France
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+*/
+/**
+ * @author Sylvain Berfini
+ */
+@TargetApi(19)
+public class ApiNineteenPlus {
+	public static void scheduleAlarm(AlarmManager alarmManager, int type, long triggerAtMillis, PendingIntent operation) {
+		alarmManager.setExact(type, triggerAtMillis, operation);
+	}
+}

src/org/linphone/compatibility/Compatibility.java

@@ -19,6 +19,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
 import org.linphone.mediastream.Version;
 
+import android.app.AlarmManager;
 import android.app.Notification;
 import android.app.PendingIntent;
 import android.content.Context;
@@ -129,4 +130,12 @@ public class Compatibility {
 			ApiElevenPlus.setTextAppearance(textview, context, style);
 		}
 	}
+
+	public static void scheduleAlarm(AlarmManager alarmManager, int type, long triggerAtMillis, PendingIntent operation) {
+		if (Version.sdkAboveOrEqual(Version.API19_KITKAT_44)) {
+			ApiNineteenPlus.scheduleAlarm(alarmManager, type, triggerAtMillis, operation);
+		} else {
+			ApiElevenPlus.scheduleAlarm(alarmManager, type, triggerAtMillis, operation);
+		}
+	}
 }