diff --git a/app/src/main/java/org/linphone/LinphoneService.java b/app/src/main/java/org/linphone/LinphoneService.java
index cf641368c..c86e4c469 100644
--- a/app/src/main/java/org/linphone/LinphoneService.java
+++ b/app/src/main/java/org/linphone/LinphoneService.java
@@ -191,15 +191,16 @@ public final class LinphoneService extends Service {
         }
 
         mNotificationManager = new NotificationsManager(this);
-        if (Version.sdkAboveOrEqual(Version.API26_O_80)
-                && intent != null
-                && intent.getBooleanExtra("ForceStartForeground", false)) {
-            // We need to call this asap
-            mNotificationManager.startForeground();
-        }
 
         mLinphoneManager = new LinphoneManager(this);
         sInstance = this; // sInstance is ready once linphone manager has been created
+        if (Version.sdkAboveOrEqual(Version.API26_O_80)
+                && intent != null
+                && intent.getBooleanExtra("ForceStartForeground", false)) {
+            // We need to call this asap after the Service can be accessed through it's singleton
+            mNotificationManager.startForeground();
+        }
+
         mLinphoneManager.startLibLinphone(isPush);
         LinphoneManager.getCore().addListener(mListener);
 
@@ -212,6 +213,10 @@ public final class LinphoneService extends Service {
                     .registerContentObserver(
                             ContactsContract.Contacts.CONTENT_URI, true, mContactsManager);
         }
+        if (mContactsManager.hasReadContactsAccess()) {
+            ContactsManager.getInstance().enableContactsAccess();
+        }
+        ContactsManager.getInstance().initializeContactManager();
 
         Compatibility.createChatShortcuts(this);
         mOrientationHelper.enable();
diff --git a/app/src/main/java/org/linphone/activities/MainActivity.java b/app/src/main/java/org/linphone/activities/MainActivity.java
index 12639d3a9..8ad37e26b 100644
--- a/app/src/main/java/org/linphone/activities/MainActivity.java
+++ b/app/src/main/java/org/linphone/activities/MainActivity.java
@@ -280,11 +280,6 @@ public abstract class MainActivity extends LinphoneGenericActivity
 
         requestRequiredPermissions();
 
-        if (checkPermission(Manifest.permission.READ_CONTACTS)) {
-            ContactsManager.getInstance().enableContactsAccess();
-        }
-        ContactsManager.getInstance().initializeContactManager();
-
         if (DeviceUtils.isAppUserRestricted(this)) {
             Log.w(
                     "[Main Activity] Device has been restricted by user (Android 9+), push notifications won't work !");
diff --git a/app/src/main/java/org/linphone/contacts/ContactsManager.java b/app/src/main/java/org/linphone/contacts/ContactsManager.java
index ca5047ed9..5d26143df 100644
--- a/app/src/main/java/org/linphone/contacts/ContactsManager.java
+++ b/app/src/main/java/org/linphone/contacts/ContactsManager.java
@@ -99,6 +99,7 @@ public class ContactsManager extends ContentObserver implements FriendListListen
 
     @Override
     public void onChange(boolean selfChange, Uri uri) {
+        Log.i("[Contacts Manager] Content observer detected a changing in at least one contact");
         fetchContactsAsync();
     }
 
@@ -119,7 +120,7 @@ public class ContactsManager extends ContentObserver implements FriendListListen
     }
 
     public void destroy() {
-        mContext.getContentResolver().unregisterContentObserver(ContactsManager.getInstance());
+        mContext.getContentResolver().unregisterContentObserver(this);
 
         if (mLoadContactTask != null) {
             mLoadContactTask.cancel(true);
@@ -256,7 +257,7 @@ public class ContactsManager extends ContentObserver implements FriendListListen
                         && hasWriteContactsAccess()
                         && hasWriteSyncPermission()) {
                     if (LinphoneService.isReady()) {
-                        ContactsManager.getInstance().initializeSyncAccount();
+                        initializeSyncAccount();
                         mInitialized = true;
                     }
                 }
@@ -462,7 +463,7 @@ public class ContactsManager extends ContentObserver implements FriendListListen
     public void onPresenceReceived(FriendList list, Friend[] friends) {
         boolean updated = false;
         for (Friend lf : friends) {
-            boolean newContact = ContactsManager.getInstance().refreshSipContact(lf);
+            boolean newContact = refreshSipContact(lf);
             if (newContact) {
                 updated = true;
             }
diff --git a/app/src/main/java/org/linphone/receivers/BootReceiver.java b/app/src/main/java/org/linphone/receivers/BootReceiver.java
index 0615a50e6..587a1fe3c 100644
--- a/app/src/main/java/org/linphone/receivers/BootReceiver.java
+++ b/app/src/main/java/org/linphone/receivers/BootReceiver.java
@@ -32,14 +32,15 @@ public class BootReceiver extends BroadcastReceiver {
     public void onReceive(Context context, Intent intent) {
         if (intent.getAction().equalsIgnoreCase(Intent.ACTION_SHUTDOWN)) {
             android.util.Log.d(
-                    "LinphoneBootReceiver",
-                    "Device is shutting down, destroying Core to unregister");
+                    "Linphone",
+                    "[Boot Receiver] Device is shutting down, destroying Core to unregister");
             context.stopService(
                     new Intent(Intent.ACTION_MAIN).setClass(context, LinphoneService.class));
         } else {
+            LinphonePreferences.instance().setContext(context);
             boolean autostart = LinphonePreferences.instance().isAutoStartEnabled();
             android.util.Log.i(
-                    "LinphoneBootReceiver", "Device is starting, auto_start is " + autostart);
+                    "Linphone", "[Boot Receiver] Device is starting, auto_start is " + autostart);
             if (autostart && !LinphoneService.isReady()) {
                 Intent serviceIntent = new Intent(Intent.ACTION_MAIN);
                 serviceIntent.setClass(context, LinphoneService.class);