diff --git a/app/build.gradle b/app/build.gradle
index 8abf5458..cadbca7a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -62,7 +62,7 @@ android {
 }
 
 dependencies {
-    implementation 'com.github.SimpleMobileTools:Simple-Commons:ee9863c9c5'
+    implementation 'com.github.SimpleMobileTools:Simple-Commons:101f2a180c'
     implementation 'com.googlecode.ez-vcard:ez-vcard:0.11.3'
     implementation 'com.github.tibbi:IndicatorFastScroll:4524cd0b61'
     implementation 'androidx.swiperefreshlayout:swiperefreshlayout:1.1.0'
diff --git a/app/src/main/res/values-ar/strings.xml b/app/src/main/res/values-ar/strings.xml
index 1efbfb7b..6fffda97 100644
--- a/app/src/main/res/values-ar/strings.xml
+++ b/app/src/main/res/values-ar/strings.xml
@@ -53,6 +53,7 @@
     <string name="contacts">جهات الاتصال</string>
     <string name="show_only_contacts_with_numbers">إظهار جهات الإتصال التي لديها أرقام هواتف فقط</string>
     <string name="show_private_contacts">Show private contacts to Simple Dialer, Simple SMS Messenger and Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
 
     <!-- Events -->
     <string name="birthday">تاريخ الميلاد</string>
diff --git a/app/src/main/res/values-az/strings.xml b/app/src/main/res/values-az/strings.xml
index ec5151b0..cfe3efb4 100644
--- a/app/src/main/res/values-az/strings.xml
+++ b/app/src/main/res/values-az/strings.xml
@@ -53,6 +53,7 @@
     <string name="contacts">Kontaktlar</string>
     <string name="show_only_contacts_with_numbers">Show only contacts with phone numbers</string>
     <string name="show_private_contacts">Show private contacts to Simple Dialer, Simple SMS Messenger and Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
 
     <!-- Events -->
     <string name="birthday">Ad günü</string>
diff --git a/app/src/main/res/values-ca/strings.xml b/app/src/main/res/values-ca/strings.xml
index 1484beb6..7f972588 100644
--- a/app/src/main/res/values-ca/strings.xml
+++ b/app/src/main/res/values-ca/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Contactes</string>
     <string name="show_only_contacts_with_numbers">Mostra només els contactes amb números de telèfon</string>
     <string name="show_private_contacts">Mostra els contactes privats al Simple Dialer, Simple SMS Messenger i Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Data de naixement</string>
     <string name="anniversary">Aniversari</string>
diff --git a/app/src/main/res/values-cs/strings.xml b/app/src/main/res/values-cs/strings.xml
index f999a56b..2144f1da 100644
--- a/app/src/main/res/values-cs/strings.xml
+++ b/app/src/main/res/values-cs/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Kontakty</string>
     <string name="show_only_contacts_with_numbers">Zobrazit jen kontakty s telefonními čísly</string>
     <string name="show_private_contacts">Show private contacts to Simple Dialer, Simple SMS Messenger and Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Narozeniny</string>
     <string name="anniversary">Výročí</string>
diff --git a/app/src/main/res/values-cy/strings.xml b/app/src/main/res/values-cy/strings.xml
index 1b4ec260..ebcfa112 100644
--- a/app/src/main/res/values-cy/strings.xml
+++ b/app/src/main/res/values-cy/strings.xml
@@ -53,6 +53,7 @@
     <string name="contacts">Cysylltiadau</string>
     <string name="show_only_contacts_with_numbers">Dangos dim ond cysylltiadau gyda rhifau ffôn</string>
     <string name="show_private_contacts">Show private contacts to Simple Dialer, Simple SMS Messenger and Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
 
     <!-- Events -->
     <string name="birthday">Pen-blwydd</string>
diff --git a/app/src/main/res/values-da/strings.xml b/app/src/main/res/values-da/strings.xml
index 5d7ce25e..44c06da4 100644
--- a/app/src/main/res/values-da/strings.xml
+++ b/app/src/main/res/values-da/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Kontakter</string>
     <string name="show_only_contacts_with_numbers">Vis kun kontakter med telefonnumre</string>
     <string name="show_private_contacts">Vis private kontakter til Simple Dialer, Simple SMS Messenger og Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Fødselsdag</string>
     <string name="anniversary">Årsdag</string>
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 2e300e73..06bf436b 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Kontakte</string>
     <string name="show_only_contacts_with_numbers">Nur Kontakte mit Telefonnummern anzeigen</string>
     <string name="show_private_contacts">Zeige private Kontakte in Schlichtem Telefon, SMS Messenger und Kalender Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Geburtstag</string>
     <string name="anniversary">Jahrestag</string>
diff --git a/app/src/main/res/values-el/strings.xml b/app/src/main/res/values-el/strings.xml
index 4e1dc731..4754072f 100644
--- a/app/src/main/res/values-el/strings.xml
+++ b/app/src/main/res/values-el/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Επαφές</string>
     <string name="show_only_contacts_with_numbers">Προβολή όλων των Επαφών με αριθμούς τηλεφώνου</string>
     <string name="show_private_contacts">Εμφάνιση ιδιωτικών επαφών σε Απλή Κλήση, Απλός SMS Messenger και Απλό Ημερολόγιο Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Γενέθλια</string>
     <string name="anniversary">Επέτειος</string>
diff --git a/app/src/main/res/values-eo/strings.xml b/app/src/main/res/values-eo/strings.xml
index 90ed5497..689f9fb4 100644
--- a/app/src/main/res/values-eo/strings.xml
+++ b/app/src/main/res/values-eo/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Contacts</string>
     <string name="show_only_contacts_with_numbers">Show only contacts with phone numbers</string>
     <string name="show_private_contacts">Show private contacts to Simple Dialer, Simple SMS Messenger and Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Naskiĝtago</string>
     <string name="anniversary">Anniversary</string>
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index 28355f0e..9cb8e916 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -53,6 +53,7 @@
     <string name="contacts">Contactos</string>
     <string name="show_only_contacts_with_numbers">Solo mostrar contactos con números telefónicos</string>
     <string name="show_private_contacts">Mostrar contactos privados a Marcador Simple, Mensajería SMS Simple y Calendario Simple Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
 
     <!-- Events -->
     <string name="birthday">Cumpleaños</string>
diff --git a/app/src/main/res/values-et/strings.xml b/app/src/main/res/values-et/strings.xml
index a855370d..34ece5d6 100644
--- a/app/src/main/res/values-et/strings.xml
+++ b/app/src/main/res/values-et/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Contacts</string>
     <string name="show_only_contacts_with_numbers">Näita vaid kontakte, kellel on telefoninumber</string>
     <string name="show_private_contacts">Näita privaatseks märgitud kontakte Lihtsas telefonis, Lihtne SMS sõnumikliendis ja Lihtsas kalendris</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Sünnipäev</string>
     <string name="anniversary">Aastapäev</string>
diff --git a/app/src/main/res/values-eu/strings.xml b/app/src/main/res/values-eu/strings.xml
index 8018a633..8be9719e 100644
--- a/app/src/main/res/values-eu/strings.xml
+++ b/app/src/main/res/values-eu/strings.xml
@@ -53,6 +53,7 @@
     <string name="contacts">Kontaktuak</string>
     <string name="show_only_contacts_with_numbers">Show only contacts with phone numbers</string>
     <string name="show_private_contacts">Show private contacts to Simple Dialer, Simple SMS Messenger and Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
 
     <!-- Events -->
     <string name="birthday">Urtebetetzea</string>
diff --git a/app/src/main/res/values-fi/strings.xml b/app/src/main/res/values-fi/strings.xml
index 930e8c24..10d04977 100644
--- a/app/src/main/res/values-fi/strings.xml
+++ b/app/src/main/res/values-fi/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Yhteystiedot</string>
     <string name="show_only_contacts_with_numbers">Näytä ainoastaan numerolliset yhteystiedot</string>
     <string name="show_private_contacts">Näytä yksityiset yhteystiedot sovelluksissa Simple Dialer, Simple SMS Messenger ja Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Syntymäpäivä</string>
     <string name="anniversary">Vuosipäivä</string>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 60ec45c5..4c7429bf 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Contacts</string>
     <string name="show_only_contacts_with_numbers">N\’afficher que les contacts avec un numéro de téléphone</string>
     <string name="show_private_contacts">Présenter les contacts privés à Simple composeur, Simple SMS Messenger et Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Date de naissance</string>
     <string name="anniversary">Autre anniversaire</string>
diff --git a/app/src/main/res/values-gl/strings.xml b/app/src/main/res/values-gl/strings.xml
index 515ce213..68261608 100644
--- a/app/src/main/res/values-gl/strings.xml
+++ b/app/src/main/res/values-gl/strings.xml
@@ -53,6 +53,7 @@
     <string name="contacts">Contactos</string>
     <string name="show_only_contacts_with_numbers">Mostrar só contactos con número de teléfono</string>
     <string name="show_private_contacts">Mostrar contactos privados em Simple Dialer e em Simple SMS Messenger</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
 
     <!-- Events -->
     <string name="birthday">Data de nacemento</string>
diff --git a/app/src/main/res/values-hi-rIN/strings.xml b/app/src/main/res/values-hi-rIN/strings.xml
index 9b78ac83..ffb58628 100644
--- a/app/src/main/res/values-hi-rIN/strings.xml
+++ b/app/src/main/res/values-hi-rIN/strings.xml
@@ -53,6 +53,7 @@
     <string name="contacts">Contacts</string>
     <string name="show_only_contacts_with_numbers">Show only contacts with phone numbers</string>
     <string name="show_private_contacts">Show private contacts to Simple Dialer, Simple SMS Messenger and Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
 
     <!-- Events -->
     <string name="birthday">Birthday</string>
diff --git a/app/src/main/res/values-hr/strings.xml b/app/src/main/res/values-hr/strings.xml
index 4524158e..62b03364 100644
--- a/app/src/main/res/values-hr/strings.xml
+++ b/app/src/main/res/values-hr/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Kontakti</string>
     <string name="show_only_contacts_with_numbers">Prikaži samo kontakte s telefonskim brojevima</string>
     <string name="show_private_contacts">Prikaži privatne kontakte u Simple Dialer, Simple SMS Messenger i Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Rođendan</string>
     <string name="anniversary">Obljetnica</string>
diff --git a/app/src/main/res/values-hu/strings.xml b/app/src/main/res/values-hu/strings.xml
index a4d2b75c..18370877 100644
--- a/app/src/main/res/values-hu/strings.xml
+++ b/app/src/main/res/values-hu/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Névjegyek</string>
     <string name="show_only_contacts_with_numbers">Csak a telefonszámot tartalmazó névjegyek megjelenítése</string>
     <string name="show_private_contacts">Privát névjegyek megjelenítése a Simple Dialer, Simple SMS Messenger és a Simple Calendar Pro számára</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Születésnap</string>
     <string name="anniversary">Évforduló</string>
diff --git a/app/src/main/res/values-id/strings.xml b/app/src/main/res/values-id/strings.xml
index 97beee94..54de0fac 100644
--- a/app/src/main/res/values-id/strings.xml
+++ b/app/src/main/res/values-id/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Kontak</string>
     <string name="show_only_contacts_with_numbers">Hanya tampilkan kontak dengan nomor telepon</string>
     <string name="show_private_contacts">Tampilkan kontak privat ke Simple Dialer, Simple SMS Messenger dan Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Ulang tahun</string>
     <string name="anniversary">Hari jadi</string>
diff --git a/app/src/main/res/values-it/strings.xml b/app/src/main/res/values-it/strings.xml
index e576fe21..e6f2eb12 100644
--- a/app/src/main/res/values-it/strings.xml
+++ b/app/src/main/res/values-it/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Contatti</string>
     <string name="show_only_contacts_with_numbers">Mostra solamente i contatti con almeno un numero telefonico</string>
     <string name="show_private_contacts">Mostra i contatti privati su Simple Dialer, Simple SMS Messenger e Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Compleanno</string>
     <string name="anniversary">Anniversario</string>
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 44e070cf..98f496e4 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">連絡先</string>
     <string name="show_only_contacts_with_numbers">電話番号が登録された連絡先のみ表示する</string>
     <string name="show_private_contacts">シンプルダイヤラー、シンプルSMSメッセンジャー、シンプルカレンダーProに個人の連絡先を表示</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">誕生日</string>
     <string name="anniversary">記念日</string>
diff --git a/app/src/main/res/values-ko-rKR/strings.xml b/app/src/main/res/values-ko-rKR/strings.xml
index 79154604..4a8f4fad 100644
--- a/app/src/main/res/values-ko-rKR/strings.xml
+++ b/app/src/main/res/values-ko-rKR/strings.xml
@@ -53,6 +53,7 @@
     <string name="contacts">Contacts</string>
     <string name="show_only_contacts_with_numbers">Show only contacts with phone numbers</string>
     <string name="show_private_contacts">Show private contacts to Simple Dialer, Simple SMS Messenger and Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
 
     <!-- Events -->
     <string name="birthday">생일</string>
diff --git a/app/src/main/res/values-lt/strings.xml b/app/src/main/res/values-lt/strings.xml
index 37117569..9444d32a 100644
--- a/app/src/main/res/values-lt/strings.xml
+++ b/app/src/main/res/values-lt/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Adresatai</string>
     <string name="show_only_contacts_with_numbers">Rodyti tik adresatus su telefono numeriu</string>
     <string name="show_private_contacts"/>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Gimtadienis</string>
     <string name="anniversary">Metinės</string>
diff --git a/app/src/main/res/values-ml/strings.xml b/app/src/main/res/values-ml/strings.xml
index d8e71ac8..cbf360f4 100644
--- a/app/src/main/res/values-ml/strings.xml
+++ b/app/src/main/res/values-ml/strings.xml
@@ -53,6 +53,7 @@
     <string name="contacts">കോണ്ടാക്ടുകൾ </string>
     <string name="show_only_contacts_with_numbers">ഫോൺ നമ്പറുകളുള്ള കോൺടാക്റ്റുകൾ മാത്രം കാണിക്കുക</string>
     <string name="show_private_contacts">Simple Dialer-ലേക്കും  Simple Messenger-ലേക്കും സ്വകാര്യ കോൺടാക്റ്റുകൾ കാണിക്കുക</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
 
     <!-- Events -->
     <string name="birthday">ജന്മദിനം</string>
diff --git a/app/src/main/res/values-nb-rNO/strings.xml b/app/src/main/res/values-nb-rNO/strings.xml
index 38117c66..e06af270 100644
--- a/app/src/main/res/values-nb-rNO/strings.xml
+++ b/app/src/main/res/values-nb-rNO/strings.xml
@@ -48,6 +48,7 @@
     <string name="contacts">Kontakter</string>
     <string name="show_only_contacts_with_numbers">Kun vis kontakter med telefonnumre</string>
     <string name="show_private_contacts">Vis private kontakter til Simple Dialer, Simple SMS Messenger og Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Geburtsdag</string>
     <string name="anniversary">Jubileum</string>
diff --git a/app/src/main/res/values-nl/strings.xml b/app/src/main/res/values-nl/strings.xml
index 57bb6fc2..6773cd6b 100644
--- a/app/src/main/res/values-nl/strings.xml
+++ b/app/src/main/res/values-nl/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Contacten</string>
     <string name="show_only_contacts_with_numbers">Alleen contacten met telefoonnummer tonen</string>
     <string name="show_private_contacts">Privécontacten tonen aan Eenvoudige Telefoon, Eenvoudige Berichten en Eenvoudige Agenda Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Verjaardag</string>
     <string name="anniversary">Jubileum</string>
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index df8e83dc..8110da84 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Kontakty</string>
     <string name="show_only_contacts_with_numbers">Pokazuj tylko kontakty z numerami telefonów</string>
     <string name="show_private_contacts">Pokazuj prywatne kontakty Prostemu telefonowi, Prostym wiadomościom SMS i Prostemu kalendarzowi Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Urodziny</string>
     <string name="anniversary">Rocznica</string>
diff --git a/app/src/main/res/values-pt-rBR/strings.xml b/app/src/main/res/values-pt-rBR/strings.xml
index 18a93d6b..c3953721 100644
--- a/app/src/main/res/values-pt-rBR/strings.xml
+++ b/app/src/main/res/values-pt-rBR/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Contatos</string>
     <string name="show_only_contacts_with_numbers">Mostar apenas os contatos com número de telefone</string>
     <string name="show_private_contacts">Compartilhar contatos privados com o Simple Dialer, Simple SMS Messenger e Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Data de Nascimento</string>
     <string name="anniversary">Data Especial</string>
diff --git a/app/src/main/res/values-pt/strings.xml b/app/src/main/res/values-pt/strings.xml
index 0917733d..b485a50e 100644
--- a/app/src/main/res/values-pt/strings.xml
+++ b/app/src/main/res/values-pt/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Contactos</string>
     <string name="show_only_contacts_with_numbers">Mostrar apenas contactos com número de telefone</string>
     <string name="show_private_contacts">Mostrar contactos privados em Simple Dialer, Simple SMS Messenger e em Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Data de nascimento</string>
     <string name="anniversary">Aniversário</string>
diff --git a/app/src/main/res/values-ro/strings.xml b/app/src/main/res/values-ro/strings.xml
index b41e2ece..00de7ae3 100644
--- a/app/src/main/res/values-ro/strings.xml
+++ b/app/src/main/res/values-ro/strings.xml
@@ -54,6 +54,7 @@
     <string name="contacts">Contacte</string>
     <string name="show_only_contacts_with_numbers">Afișați numai contactele cu numere de telefon</string>
     <string name="show_private_contacts">Afișați contactele private în Simple Dialer, Simple SMS Messenger și Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
 
     <!-- Events -->
     <string name="birthday">Ziua de naștere</string>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 53c7b96b..59486a9d 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Контакты</string>
     <string name="show_only_contacts_with_numbers">Показывать только контакты с номерами телефонов</string>
     <string name="show_private_contacts">Показывать личные контакты в Simple Dialer, Simple SMS Messenger и Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">День рождения</string>
     <string name="anniversary">Годовщина</string>
diff --git a/app/src/main/res/values-sk/strings.xml b/app/src/main/res/values-sk/strings.xml
index 48ce47b7..3c474439 100644
--- a/app/src/main/res/values-sk/strings.xml
+++ b/app/src/main/res/values-sk/strings.xml
@@ -53,6 +53,7 @@
     <string name="contacts">Kontakty</string>
     <string name="show_only_contacts_with_numbers">Zobraziť iba kontakty s telefónnymi číslami</string>
     <string name="show_private_contacts">Zobraziť súkromné kontakty Jednoduchému Telefónu, Jednoduchému SMS Správcovi a Jednoduchému Kalendáru Pro</string>
+    <string name="merge_duplicate_contacts">Zoskupiť zdvojené kontakty</string>
 
     <!-- Events -->
     <string name="birthday">Narodeniny</string>
diff --git a/app/src/main/res/values-sv/strings.xml b/app/src/main/res/values-sv/strings.xml
index 4613d5ee..89bf31c3 100644
--- a/app/src/main/res/values-sv/strings.xml
+++ b/app/src/main/res/values-sv/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Kontakter</string>
     <string name="show_only_contacts_with_numbers">Visa bara kontakter med telefonnummer</string>
     <string name="show_private_contacts">Show private contacts to Simple Dialer, Simple SMS Messenger and Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Födelsedag</string>
     <string name="anniversary">Årsdag</string>
diff --git a/app/src/main/res/values-tr/strings.xml b/app/src/main/res/values-tr/strings.xml
index 463cea8f..ffd10305 100644
--- a/app/src/main/res/values-tr/strings.xml
+++ b/app/src/main/res/values-tr/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Kişiler</string>
     <string name="show_only_contacts_with_numbers">Yalnızca telefon numaraları olan kişileri göster</string>
     <string name="show_private_contacts">Özel kişileri Basit Çevirici, Basit SMS Messenger ve Basit Takvim Pro\'a göster</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">Doğum günü</string>
     <string name="anniversary">Yıldönümü</string>
diff --git a/app/src/main/res/values-uk/strings.xml b/app/src/main/res/values-uk/strings.xml
index dd9d4304..a7eacb5e 100644
--- a/app/src/main/res/values-uk/strings.xml
+++ b/app/src/main/res/values-uk/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">Контакти</string>
     <string name="show_only_contacts_with_numbers">Показувати лише контакти з телефонними номерами</string>
     <string name="show_private_contacts">Показувати приватні контакти в Simple Dialer, Simple SMS Messenger і Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">День народження</string>
     <string name="anniversary">Річниця</string>
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index f44f060e..6b07b0e8 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">联系人</string>
     <string name="show_only_contacts_with_numbers">只显示含有电话话码的联系人</string>
     <string name="show_private_contacts">显示私密联系人给简易拨号器和简易短信</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">生日</string>
     <string name="anniversary">纪念日</string>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 1a1684d7..8641b1c2 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -49,6 +49,7 @@
     <string name="contacts">聯絡人</string>
     <string name="show_only_contacts_with_numbers">只顯示含有電話話碼的聯絡人</string>
     <string name="show_private_contacts">Show private contacts to Simple Dialer, Simple SMS Messenger and Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
     <!-- Events -->
     <string name="birthday">生日</string>
     <string name="anniversary">紀念日</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 5124f518..3f367cf3 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -54,6 +54,7 @@
     <string name="contacts">Contacts</string>
     <string name="show_only_contacts_with_numbers">Show only contacts with phone numbers</string>
     <string name="show_private_contacts">Show private contacts to Simple Dialer, Simple SMS Messenger and Simple Calendar Pro</string>
+    <string name="merge_duplicate_contacts">Merge duplicate contacts</string>
 
     <!-- Events -->
     <string name="birthday">Birthday</string>
diff --git a/build.gradle b/build.gradle
index 744f805d..6c6d9239 100644
--- a/build.gradle
+++ b/build.gradle
@@ -9,7 +9,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.0.3'
+        classpath 'com.android.tools.build:gradle:7.0.4'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong