diff --git a/app/src/main/kotlin/com/simplemobiletools/contacts/activities/MainActivity.kt b/app/src/main/kotlin/com/simplemobiletools/contacts/activities/MainActivity.kt
index 03a277aa..ac619d7c 100644
--- a/app/src/main/kotlin/com/simplemobiletools/contacts/activities/MainActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/contacts/activities/MainActivity.kt
@@ -48,6 +48,7 @@ class MainActivity : SimpleActivity(), RefreshContactsListener {
     private var storedShowContactThumbnails = false
     private var storedShowPhoneNumbers = false
     private var storedStartNameWithSurname = false
+    private var storedFilterDuplicates = true
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -118,6 +119,10 @@ class MainActivity : SimpleActivity(), RefreshContactsListener {
             favorites_fragment?.startNameWithSurnameChanged(configStartNameWithSurname)
         }
 
+        if (storedFilterDuplicates != config.filterDuplicates) {
+            refreshContacts(ALL_TABS_MASK)
+        }
+
         if (werePermissionsHandled && !isFirstResume) {
             if (viewpager.adapter == null) {
                 initFragments()
@@ -175,6 +180,7 @@ class MainActivity : SimpleActivity(), RefreshContactsListener {
             storedShowContactThumbnails = showContactThumbnails
             storedShowPhoneNumbers = showPhoneNumbers
             storedStartNameWithSurname = startNameWithSurname
+            storedFilterDuplicates = filterDuplicates
         }
     }
 
diff --git a/app/src/main/kotlin/com/simplemobiletools/contacts/activities/SettingsActivity.kt b/app/src/main/kotlin/com/simplemobiletools/contacts/activities/SettingsActivity.kt
index 9b76f9eb..1cf3bb24 100644
--- a/app/src/main/kotlin/com/simplemobiletools/contacts/activities/SettingsActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/contacts/activities/SettingsActivity.kt
@@ -31,6 +31,7 @@ class SettingsActivity : SimpleActivity() {
         setupShowContactThumbnails()
         setupShowPhoneNumbers()
         setupStartNameWithSurname()
+        setupFilterDuplicates()
         setupOnContactClick()
         updateTextColors(settings_holder)
     }
@@ -97,6 +98,14 @@ class SettingsActivity : SimpleActivity() {
         }
     }
 
+    private fun setupFilterDuplicates() {
+        settings_filter_duplicates.isChecked = config.filterDuplicates
+        settings_filter_duplicates_holder.setOnClickListener {
+            settings_filter_duplicates.toggle()
+            config.filterDuplicates = settings_filter_duplicates.isChecked
+        }
+    }
+
     private fun setupOnContactClick() {
         settings_on_contact_click.text = getOnContactClickText()
         settings_on_contact_click_holder.setOnClickListener {
diff --git a/app/src/main/kotlin/com/simplemobiletools/contacts/helpers/Config.kt b/app/src/main/kotlin/com/simplemobiletools/contacts/helpers/Config.kt
index 24eea65d..ad8384ba 100644
--- a/app/src/main/kotlin/com/simplemobiletools/contacts/helpers/Config.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/contacts/helpers/Config.kt
@@ -44,4 +44,8 @@ class Config(context: Context) : BaseConfig(context) {
         get() = prefs.getInt(SHOW_CONTACT_FIELDS, SHOW_FIRST_NAME_FIELD or SHOW_SURNAME_FIELD or SHOW_PHONE_NUMBERS_FIELD or SHOW_EMAILS_FIELD or
                 SHOW_ADDRESSES_FIELD or SHOW_EVENTS_FIELD or SHOW_NOTES_FIELD or SHOW_GROUPS_FIELD or SHOW_CONTACT_SOURCE_FIELD)
         set(showContactFields) = prefs.edit().putInt(SHOW_CONTACT_FIELDS, showContactFields).apply()
+
+    var filterDuplicates: Boolean
+        get() = prefs.getBoolean(FILTER_DUPLICATES, true)
+        set(filterDuplicates) = prefs.edit().putBoolean(FILTER_DUPLICATES, filterDuplicates).apply()
 }
diff --git a/app/src/main/kotlin/com/simplemobiletools/contacts/helpers/Constants.kt b/app/src/main/kotlin/com/simplemobiletools/contacts/helpers/Constants.kt
index 0b2e1b25..d38e8294 100644
--- a/app/src/main/kotlin/com/simplemobiletools/contacts/helpers/Constants.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/contacts/helpers/Constants.kt
@@ -12,6 +12,7 @@ const val LOCAL_ACCOUNT_NAME = "local_account_name"
 const val LOCAL_ACCOUNT_TYPE = "local_account_type"
 const val ON_CONTACT_CLICK = "on_contact_click"
 const val SHOW_CONTACT_FIELDS = "show_contact_fields"
+const val FILTER_DUPLICATES = "filter_duplicates"
 
 const val CONTACT_ID = "contact_id"
 const val SMT_PRIVATE = "smt_private"   // used at the contact source of local contacts hidden from other apps
diff --git a/app/src/main/kotlin/com/simplemobiletools/contacts/helpers/ContactsHelper.kt b/app/src/main/kotlin/com/simplemobiletools/contacts/helpers/ContactsHelper.kt
index 3c229d62..079cc8ae 100644
--- a/app/src/main/kotlin/com/simplemobiletools/contacts/helpers/ContactsHelper.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/contacts/helpers/ContactsHelper.kt
@@ -41,9 +41,11 @@ class ContactsHelper(val activity: BaseSimpleActivity) {
             val contactsSize = contacts.size()
             var resultContacts = ArrayList<Contact>(contactsSize)
             (0 until contactsSize).mapTo(resultContacts) { contacts.valueAt(it) }
-            resultContacts = resultContacts.distinctBy {
-                it.getHashToCompare()
-            } as ArrayList<Contact>
+            if (activity.config.filterDuplicates) {
+                resultContacts = resultContacts.distinctBy {
+                    it.getHashToCompare()
+                } as ArrayList<Contact>
+            }
 
             // groups are obtained with contactID, not rawID, so assign them to proper contacts like this
             val groups = getContactGroups(getStoredGroups())
diff --git a/app/src/main/res/layout/activity_settings.xml b/app/src/main/res/layout/activity_settings.xml
index d1fedd67..18addc99 100644
--- a/app/src/main/res/layout/activity_settings.xml
+++ b/app/src/main/res/layout/activity_settings.xml
@@ -193,6 +193,29 @@
 
         </RelativeLayout>
 
+        <RelativeLayout
+            android:id="@+id/settings_filter_duplicates_holder"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/medium_margin"
+            android:background="?attr/selectableItemBackground"
+            android:paddingBottom="@dimen/activity_margin"
+            android:paddingLeft="@dimen/normal_margin"
+            android:paddingRight="@dimen/normal_margin"
+            android:paddingTop="@dimen/activity_margin">
+
+            <com.simplemobiletools.commons.views.MySwitchCompat
+                android:id="@+id/settings_filter_duplicates"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="@null"
+                android:clickable="false"
+                android:paddingLeft="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:text="@string/filter_duplicates"/>
+
+        </RelativeLayout>
+
         <RelativeLayout
             android:id="@+id/settings_on_contact_click_holder"
             android:layout_width="match_parent"
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 8c89941c..58b24d96 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -48,7 +48,7 @@
     <string name="show_favorites_tab">Show favorites tab</string>
     <string name="show_groups_tab">Show groups tab</string>
     <string name="manage_shown_contact_fields">Manage shown contact fields</string>
-    <string name="filter_out_duplicates">Try filtering out duplicate contacts</string>
+    <string name="filter_duplicates">Try filtering out duplicate contacts</string>
 
     <!-- Emails -->
     <string name="email">Email</string>
diff --git a/app/src/main/res/values-el/strings.xml b/app/src/main/res/values-el/strings.xml
index 8edd848d..717a7ce1 100644
--- a/app/src/main/res/values-el/strings.xml
+++ b/app/src/main/res/values-el/strings.xml
@@ -48,7 +48,7 @@
     <string name="show_favorites_tab">Εμφάνιση καρτέλας αγαπημένων</string>
     <string name="show_groups_tab">Εμφάνιση καρτέλας ομάδων</string>
     <string name="manage_shown_contact_fields">Manage shown contact fields</string>
-    <string name="filter_out_duplicates">Try filtering out duplicate contacts</string>
+    <string name="filter_duplicates">Try filtering out duplicate contacts</string>
 
     <!-- Emails -->
     <string name="email">Email</string>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 48c81874..aaded17e 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -48,7 +48,7 @@
     <string name="show_favorites_tab">Afficher l\'onglet favoris</string>
     <string name="show_groups_tab">Afficher l\'onglet groupes</string>
     <string name="manage_shown_contact_fields">Configurer l\'affichage des champs des contacts</string>
-    <string name="filter_out_duplicates">Try filtering out duplicate contacts</string>
+    <string name="filter_duplicates">Try filtering out duplicate contacts</string>
 
     <!-- Emails -->
     <string name="email">E-mail</string>
diff --git a/app/src/main/res/values-hr/strings.xml b/app/src/main/res/values-hr/strings.xml
index c3245290..08d418e7 100644
--- a/app/src/main/res/values-hr/strings.xml
+++ b/app/src/main/res/values-hr/strings.xml
@@ -48,7 +48,7 @@
     <string name="show_favorites_tab">Prikaži karticu favorita</string>
     <string name="show_groups_tab">Prikaži karticu grupa</string>
     <string name="manage_shown_contact_fields">Manage shown contact fields</string>
-    <string name="filter_out_duplicates">Try filtering out duplicate contacts</string>
+    <string name="filter_duplicates">Try filtering out duplicate contacts</string>
 
     <!-- Emails -->
     <string name="email">E-pošta</string>
diff --git a/app/src/main/res/values-ko-rKR/strings.xml b/app/src/main/res/values-ko-rKR/strings.xml
index 5f67c6a9..99536a44 100644
--- a/app/src/main/res/values-ko-rKR/strings.xml
+++ b/app/src/main/res/values-ko-rKR/strings.xml
@@ -48,7 +48,7 @@
     <string name="show_favorites_tab">Show favorites tab</string>
     <string name="show_groups_tab">Show groups tab</string>
     <string name="manage_shown_contact_fields">Manage shown contact fields</string>
-    <string name="filter_out_duplicates">Try filtering out duplicate contacts</string>
+    <string name="filter_duplicates">Try filtering out duplicate contacts</string>
 
     <!-- Emails -->
     <string name="email">이메일</string>
diff --git a/app/src/main/res/values-lt/strings.xml b/app/src/main/res/values-lt/strings.xml
index 6a11b153..f5ee1255 100644
--- a/app/src/main/res/values-lt/strings.xml
+++ b/app/src/main/res/values-lt/strings.xml
@@ -48,7 +48,7 @@
     <string name="show_favorites_tab">Rodyti mėgiamiausiųjų skirtuką</string>
     <string name="show_groups_tab">Rodyti grupių skirtuką</string>
     <string name="manage_shown_contact_fields">Manage shown contact fields</string>
-    <string name="filter_out_duplicates">Try filtering out duplicate contacts</string>
+    <string name="filter_duplicates">Try filtering out duplicate contacts</string>
 
     <!-- Emails -->
     <string name="email">Elektroninis paštas</string>
diff --git a/app/src/main/res/values-pt/strings.xml b/app/src/main/res/values-pt/strings.xml
index c2dee1e5..486feb5a 100644
--- a/app/src/main/res/values-pt/strings.xml
+++ b/app/src/main/res/values-pt/strings.xml
@@ -48,7 +48,7 @@
     <string name="show_favorites_tab">Mostrar favoritos</string>
     <string name="show_groups_tab">Mostrar grupos</string>
     <string name="manage_shown_contact_fields">Gerir campos a exibir</string>
-    <string name="filter_out_duplicates">Try filtering out duplicate contacts</string>
+    <string name="filter_duplicates">Try filtering out duplicate contacts</string>
 
     <!-- Emails -->
     <string name="email">E-mail</string>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 1f911ede..6a44ca04 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -48,7 +48,7 @@
     <string name="show_favorites_tab">Показывать вкладку избранного</string>
     <string name="show_groups_tab">Показывать вкладку групп</string>
     <string name="manage_shown_contact_fields">Управление отображаемыми полями контактов</string>
-    <string name="filter_out_duplicates">Try filtering out duplicate contacts</string>
+    <string name="filter_duplicates">Try filtering out duplicate contacts</string>
 
     <!-- Emails -->
     <string name="email">Эл. почта</string>
diff --git a/app/src/main/res/values-sk/strings.xml b/app/src/main/res/values-sk/strings.xml
index bb8e35a1..c1f6d985 100644
--- a/app/src/main/res/values-sk/strings.xml
+++ b/app/src/main/res/values-sk/strings.xml
@@ -48,7 +48,7 @@
     <string name="show_favorites_tab">Zobraziť okno s obľúbenými</string>
     <string name="show_groups_tab">Zobraziť okno so skupinami</string>
     <string name="manage_shown_contact_fields">Spravovať zobrazené polia kontaktov</string>
-    <string name="filter_out_duplicates">Pokúsiť sa vyfiltrovať duplicitné kontakty</string>
+    <string name="filter_duplicates">Pokúsiť sa vyfiltrovať duplicitné kontakty</string>
 
     <!-- Emails -->
     <string name="email">Email</string>
diff --git a/app/src/main/res/values-sv/strings.xml b/app/src/main/res/values-sv/strings.xml
index fb7326ad..42f606b5 100644
--- a/app/src/main/res/values-sv/strings.xml
+++ b/app/src/main/res/values-sv/strings.xml
@@ -48,7 +48,7 @@
     <string name="show_favorites_tab">Visa fliken Favoriter</string>
     <string name="show_groups_tab">Visa fliken Grupper</string>
     <string name="manage_shown_contact_fields">Hantera visade kontaktfält</string>
-    <string name="filter_out_duplicates">Try filtering out duplicate contacts</string>
+    <string name="filter_duplicates">Try filtering out duplicate contacts</string>
 
     <!-- Emails -->
     <string name="email">E-post</string>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index be892fb4..79766c2a 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -48,7 +48,7 @@
     <string name="show_favorites_tab">顯示我的最愛頁面</string>
     <string name="show_groups_tab">顯示群組頁面</string>
     <string name="manage_shown_contact_fields">管理顯示的聯絡人欄位</string>
-    <string name="filter_out_duplicates">Try filtering out duplicate contacts</string>
+    <string name="filter_duplicates">Try filtering out duplicate contacts</string>
 
     <!-- Emails -->
     <string name="email">電子信箱</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 55942b99..a3c3eede 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -48,7 +48,7 @@
     <string name="show_favorites_tab">Show favorites tab</string>
     <string name="show_groups_tab">Show groups tab</string>
     <string name="manage_shown_contact_fields">Manage shown contact fields</string>
-    <string name="filter_out_duplicates">Try filtering out duplicate contacts</string>
+    <string name="filter_duplicates">Try filtering out duplicate contacts</string>
 
     <!-- Emails -->
     <string name="email">Email</string>