diff --git a/build.gradle b/build.gradle
index 908fece820d3b06228e12523f98a53fbb6197013..2f30c289f51785b364e4586c3630a1432d699f65 100644
--- a/build.gradle
+++ b/build.gradle
@@ -73,7 +73,7 @@ android {
     compileSdkVersion 28
 
     defaultConfig {
-        minSdkVersion 18
+        minSdkVersion 16
         targetSdkVersion 28
         versionCode 307
         versionName "2.3.9"
diff --git a/src/main/java/eu/siacs/conversations/utils/Resolver.java b/src/main/java/eu/siacs/conversations/utils/Resolver.java
index 680299a28b81ba869fdff8bcf81c4de3c2296fb8..96ce63c90f10481727b9520b7c3c8f3e65619656 100644
--- a/src/main/java/eu/siacs/conversations/utils/Resolver.java
+++ b/src/main/java/eu/siacs/conversations/utils/Resolver.java
@@ -65,7 +65,9 @@ public class Resolver {
             final Field useHardcodedDnsServers = DNSClient.class.getDeclaredField("useHardcodedDnsServers");
             useHardcodedDnsServers.setAccessible(true);
             useHardcodedDnsServers.setBoolean(dnsClient, false);
-        } catch (NoSuchFieldException | IllegalAccessException e) {
+        } catch (NoSuchFieldException e) {
+            Log.e(Config.LOGTAG, "Unable to disable hardcoded DNS servers", e);
+        } catch (IllegalAccessException e) {
             Log.e(Config.LOGTAG, "Unable to disable hardcoded DNS servers", e);
         }
     }
diff --git a/src/main/res/layout/activity_muc_details.xml b/src/main/res/layout/activity_muc_details.xml
index 7ab0894ced9c6b9e675bc8cc1098165384b29dcc..1258c4db022d4e2e0b4e1085ac11397b82c20b20 100644
--- a/src/main/res/layout/activity_muc_details.xml
+++ b/src/main/res/layout/activity_muc_details.xml
@@ -48,14 +48,17 @@
                                 android:layout_height="@dimen/avatar_on_details_screen_size"
                                 android:layout_alignParentStart="true"
                                 app:riv_corner_radius="2dp"
-                                android:layout_marginEnd="@dimen/avatar_item_distance"/>
+                                android:layout_marginEnd="@dimen/avatar_item_distance"
+                                android:layout_alignParentLeft="true"
+                                android:layout_marginRight="@dimen/avatar_item_distance" />
 
                             <LinearLayout
                                 android:layout_width="fill_parent"
                                 android:layout_height="wrap_content"
                                 android:layout_alignParentTop="true"
                                 android:layout_toEndOf="@+id/your_photo"
-                                android:orientation="vertical">
+                                android:orientation="vertical"
+                                android:layout_toRightOf="@+id/your_photo">
 
                                 <RelativeLayout
                                     android:layout_width="match_parent"
@@ -67,7 +70,9 @@
                                         android:layout_height="wrap_content"
                                         android:layout_alignParentStart="true"
                                         android:layout_toStartOf="@+id/edit_muc_name_button"
-                                        android:orientation="vertical">
+                                        android:orientation="vertical"
+                                        android:layout_alignParentLeft="true"
+                                        android:layout_toLeftOf="@+id/edit_muc_name_button">
 
                                         <TextView
                                             android:id="@+id/muc_title"
@@ -91,7 +96,9 @@
                                         android:layout_alignParentStart="true"
                                         android:layout_toStartOf="@+id/edit_muc_name_button"
                                         android:orientation="vertical"
-                                        android:visibility="gone">
+                                        android:visibility="gone"
+                                        android:layout_alignParentLeft="true"
+                                        android:layout_toLeftOf="@+id/edit_muc_name_button">
 
                                         <android.support.design.widget.TextInputLayout
                                             android:layout_width="match_parent"
@@ -132,7 +139,8 @@
                                         android:alpha="?attr/icon_alpha"
                                         android:background="?attr/selectableItemBackgroundBorderless"
                                         android:padding="@dimen/image_button_padding"
-                                        android:src="?attr/icon_edit_body"/>
+                                        android:src="?attr/icon_edit_body"
+                                        android:layout_alignParentRight="true" />
                                 </RelativeLayout>
                             </LinearLayout>
                         </RelativeLayout>
@@ -151,7 +159,8 @@
                                 android:layout_toStartOf="@+id/change_conference_button"
                                 android:text="@string/private_conference"
                                 android:textAppearance="@style/TextAppearance.Conversations.Body1"
-                                />
+                                android:layout_alignParentLeft="true"
+                                android:layout_toLeftOf="@+id/change_conference_button" />
 
                             <ImageButton
                                 android:id="@+id/change_conference_button"
@@ -164,7 +173,8 @@
                                 android:alpha="?attr/icon_alpha"
                                 android:background="?attr/selectableItemBackgroundBorderless"
                                 android:padding="@dimen/image_button_padding"
-                                android:src="?attr/icon_settings"/>
+                                android:src="?attr/icon_settings"
+                                android:layout_alignParentRight="true" />
                         </RelativeLayout>
 
                         <TableLayout
@@ -193,7 +203,8 @@
                                     android:layout_height="wrap_content"
                                     android:layout_gravity="end"
                                     android:paddingStart="4dp"
-                                    android:textAppearance="@style/TextAppearance.Conversations.Body1"/>
+                                    android:textAppearance="@style/TextAppearance.Conversations.Body1"
+                                    android:paddingLeft="4dp" />
                             </TableRow>
 
                         </TableLayout>
@@ -302,7 +313,8 @@
                                 android:alpha="?attr/icon_alpha"
                                 android:background="?attr/selectableItemBackgroundBorderless"
                                 android:padding="@dimen/image_button_padding"
-                                android:src="?attr/icon_edit_body"/>
+                                android:src="?attr/icon_edit_body"
+                                android:layout_alignParentRight="true" />
                         </RelativeLayout>
 
                         <RelativeLayout
@@ -318,7 +330,8 @@
                                 android:layout_toStartOf="@+id/notification_status_button"
                                 android:text="@string/notify_on_all_messages"
                                 android:textAppearance="@style/TextAppearance.Conversations.Body1"
-                                />
+                                android:layout_alignParentLeft="true"
+                                android:layout_toLeftOf="@+id/notification_status_button" />
 
                             <ImageButton
                                 android:id="@+id/notification_status_button"
@@ -331,7 +344,8 @@
                                 android:alpha="?attr/icon_alpha"
                                 android:background="?attr/selectableItemBackgroundBorderless"
                                 android:padding="@dimen/image_button_padding"
-                                android:src="?attr/icon_notifications"/>
+                                android:src="?attr/icon_notifications"
+                                android:layout_alignParentRight="true" />
                         </RelativeLayout>
 
                         <TextView
diff --git a/src/main/res/layout/activity_share_location.xml b/src/main/res/layout/activity_share_location.xml
index 7c8c0bc74184b71dc1b71a7ffc2ee2ca3129d93c..d5f993bf68a614b4eda3772d0a74d3773515456c 100644
--- a/src/main/res/layout/activity_share_location.xml
+++ b/src/main/res/layout/activity_share_location.xml
@@ -29,7 +29,8 @@
                     android:layout_margin="16dp"
                     app:backgroundTint="?colorPrimary"
                     android:contentDescription="@string/action_unfix_from_location"
-                    android:src="?attr/icon_gps_fixed"/>
+                    android:src="?attr/icon_gps_fixed"
+                    android:layout_alignParentRight="true" />
 
 
             <org.osmdroid.views.MapView
diff --git a/src/main/res/layout/activity_show_location.xml b/src/main/res/layout/activity_show_location.xml
index cbe23516b168e4cd53ac4aa43d9682344e261bfa..415e3127d094a7d8bad5e1c9c3cd8f7c08741438 100644
--- a/src/main/res/layout/activity_show_location.xml
+++ b/src/main/res/layout/activity_show_location.xml
@@ -28,6 +28,7 @@
             android:contentDescription="@string/action_unfix_from_location"
             android:src="?attr/icon_directions"
             app:backgroundTint="?colorPrimary"
-            app:tint="@color/white"/>
+            app:tint="@color/white"
+            android:layout_alignParentRight="true" />
     </RelativeLayout>
 </layout>
\ No newline at end of file
diff --git a/src/main/res/layout/fragment_conversation.xml b/src/main/res/layout/fragment_conversation.xml
index 5a9048db7659f51e54a7158de7ffd3c02b18638b..9bd97c0459cdb57d5a9afd288d50823943570193 100644
--- a/src/main/res/layout/fragment_conversation.xml
+++ b/src/main/res/layout/fragment_conversation.xml
@@ -21,7 +21,8 @@
             android:listSelector="@android:color/transparent"
             android:stackFromBottom="true"
             android:transcriptMode="normal"
-            tools:listitem="@layout/message_sent">
+            tools:listitem="@layout/message_sent"
+            android:layout_alignParentLeft="true">
         </ListView>
 
         <android.support.design.widget.FloatingActionButton
@@ -35,7 +36,8 @@
             android:src="?attr/icon_scroll_down"
             app:fabSize="mini"
             android:visibility="gone"
-            app:useCompatPadding="true"/>
+            app:useCompatPadding="true"
+            android:layout_alignParentRight="true" />
 
         <eu.siacs.conversations.ui.widget.UnreadCountCustomView
             android:id="@+id/unread_count_custom_view"
@@ -47,7 +49,10 @@
             android:layout_marginEnd="8dp"
             android:elevation="8dp"
             android:visibility="gone"
-            app:backgroundColor="?attr/unread_count" />
+            app:backgroundColor="?attr/unread_count"
+            android:layout_alignRight="@+id/scroll_to_bottom_button"
+            tools:ignore="RtlCompat"
+            android:layout_marginRight="8dp" />
 
         <RelativeLayout
             android:id="@+id/textsend"
@@ -55,7 +60,8 @@
             android:layout_height="wrap_content"
             android:layout_alignParentBottom="true"
             android:layout_alignParentStart="true"
-            android:background="?attr/color_background_primary">
+            android:background="?attr/color_background_primary"
+            android:layout_alignParentLeft="true">
 
             <android.support.v7.widget.RecyclerView
                 android:visibility="gone"
@@ -68,7 +74,9 @@
                 android:orientation="horizontal"
                 app:layoutManager="android.support.v7.widget.LinearLayoutManager"
                 android:paddingTop="8dp"
-                android:requiresFadingEdge="horizontal">
+                android:requiresFadingEdge="horizontal"
+                android:layout_alignParentLeft="true"
+                android:layout_toLeftOf="@+id/textSendButton">
 
             </android.support.v7.widget.RecyclerView>
 
@@ -89,7 +97,9 @@
                 android:paddingBottom="12dp"
                 android:paddingLeft="8dp"
                 android:paddingRight="8dp"
-                android:paddingTop="12dp">
+                android:paddingTop="12dp"
+                android:layout_alignParentLeft="true"
+                android:layout_toLeftOf="@+id/textSendButton">
 
                 <requestFocus/>
             </eu.siacs.conversations.ui.widget.EditMessage>
@@ -102,7 +112,8 @@
                 android:layout_centerVertical="true"
                 android:background="?attr/color_background_primary"
                 android:contentDescription="@string/send_message"
-                android:src="?attr/ic_send_text_offline"/>
+                android:src="?attr/ic_send_text_offline"
+                android:layout_alignParentRight="true" />
         </RelativeLayout>
 
         <RelativeLayout
@@ -125,7 +136,10 @@
                 android:layout_centerVertical="true"
                 android:layout_toStartOf="@+id/snackbar_action"
                 android:paddingStart="24dp"
-                android:textAppearance="@style/TextAppearance.Conversations.Body1.OnDark"/>
+                android:textAppearance="@style/TextAppearance.Conversations.Body1.OnDark"
+                android:layout_alignParentLeft="true"
+                android:paddingLeft="24dp"
+                android:layout_toLeftOf="@+id/snackbar_action" />
 
             <TextView
                 android:id="@+id/snackbar_action"
@@ -139,7 +153,8 @@
                 android:paddingTop="16dp"
                 android:textAllCaps="true"
                 android:textAppearance="@style/TextAppearance.Conversations.Body1.OnDark"
-                android:textStyle="bold"/>
+                android:textStyle="bold"
+                android:layout_alignParentRight="true" />
         </RelativeLayout>
 
     </RelativeLayout>
diff --git a/src/main/res/layout/media_preview.xml b/src/main/res/layout/media_preview.xml
index 07da56f4e2d5edd27d5b526f33ac6a56b55e9580..2262467aa9978c885c5affde6fe6ae580a04ab70 100644
--- a/src/main/res/layout/media_preview.xml
+++ b/src/main/res/layout/media_preview.xml
@@ -19,6 +19,7 @@
             android:layout_alignParentTop="true"
             android:alpha="?attr/delete_icon_alpha"
             android:background="?attr/selectableItemBackgroundBorderless"
-            android:src="?attr/icon_cancel"/>
+            android:src="?attr/icon_cancel"
+            android:layout_alignParentRight="true" />
     </RelativeLayout>
 </layout>
diff --git a/src/main/res/layout/message_sent.xml b/src/main/res/layout/message_sent.xml
index d6a387c62a081233f6fb9049ef15994be2a680a6..29ac6fc6535bb732d49f052b811e336e6f2d2be1 100644
--- a/src/main/res/layout/message_sent.xml
+++ b/src/main/res/layout/message_sent.xml
@@ -17,7 +17,8 @@
         android:layout_alignParentEnd="true"
         android:layout_alignParentBottom="true"
         android:layout_width="wrap_content"
-        android:layout_height="wrap_content">
+        android:layout_height="wrap_content"
+        android:layout_alignParentRight="true">
         <com.makeramen.roundedimageview.RoundedImageView
             android:id="@+id/message_photo"
             android:layout_width="48dp"