diff --git a/CMakeLists.txt b/CMakeLists.txt
index abe93c861..177972a3f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -370,6 +370,7 @@ set(TDLIB_SOURCE
   td/telegram/Global.cpp
   td/telegram/HashtagHints.cpp
   td/telegram/InlineQueriesManager.cpp
+  td/telegram/LanguagePackManager.cpp
   td/telegram/Location.cpp
   td/telegram/MessageEntity.cpp
   td/telegram/MessagesDb.cpp
@@ -483,6 +484,7 @@ set(TDLIB_SOURCE
   td/telegram/Global.h
   td/telegram/HashtagHints.h
   td/telegram/InlineQueriesManager.h
+  td/telegram/LanguagePackManager.h
   td/telegram/Location.h
   td/telegram/logevent/LogEvent.h
   td/telegram/logevent/LogEventHelper.h
diff --git a/td/generate/scheme/td_api.tl b/td/generate/scheme/td_api.tl
index 483bf2c82..d78933ae3 100644
--- a/td/generate/scheme/td_api.tl
+++ b/td/generate/scheme/td_api.tl
@@ -1652,6 +1652,29 @@ chatEvents events:vector<chatEvent> = ChatEvents;
 chatEventLogFilters message_edits:Bool message_deletions:Bool message_pins:Bool member_joins:Bool member_leaves:Bool member_invites:Bool member_promotions:Bool member_restrictions:Bool info_changes:Bool setting_changes:Bool = ChatEventLogFilters;
 
 
+//@class LanguagePackString @description Represents one language pack string
+
+//@description An ordinary language pack string @key String key @value String value
+languagePackStringValue key:string value:string = LanguagePackString;
+
+//@description A language pack string, which has different forms based on some quantity @key String key @zero_value Value for zero objects @one_value Value for one object @two_value Value for two objects
+//@few_value Value for few objects @many_value Value for many objects @other_value Default value
+languagePackStringPluralized key:string zero_value:string one_value:string two_value:string few_value:string many_value:string other_value:string = LanguagePackString;
+
+//@description A deleted language pack string @key String key
+languagePackStringDeleted key:string = LanguagePackString;
+
+
+//@description Contains a list of language pack strings @strings A list of language pack strings
+languagePackStrings strings:vector<LanguagePackString> = LanguagePackStrings;
+
+//@description Contains information about a language @code Language code @name Language name @native_name Language native name
+languageInfo code:string name:string native_name:string = LanguageInfo;
+
+//@description Contains information about a language pack @languages List of available languages
+languagePack languages:vector<languageInfo> = LanguagePack;
+
+
 //@class DeviceToken @description Represents a data needed to subscribe for push notifications. To use specific push notification service, you must specify the correct application platform and upload valid server authentication data at https://my.telegram.org
 
 //@description A token for Google Cloud Messaging @token Device registration token; may be empty to de-register a device
@@ -3025,6 +3048,13 @@ getSupportUser = User;
 getWallpapers = Wallpapers;
 
 
+//@description Returns information about used language pack
+getLanguagePack = LanguagePack;
+
+//@description Returns strings from used language pack on specified language by their keys @language_code Language code of strings to return @keys Language pack keys of strings to return; may be empty to get all available strings
+getLanguagePackStrings language_code:string keys:vector<string> = LanguagePackStrings;
+
+
 //@description Registers the currently used device for receiving push notifications @device_token Device token @other_user_ids List of at most 100 user identifiers of other users currently using the client
 registerDevice device_token:DeviceToken other_user_ids:vector<int32> = Ok;
 
diff --git a/td/generate/scheme/td_api.tlo b/td/generate/scheme/td_api.tlo
index 120bf7cdb..b442faaa5 100644
Binary files a/td/generate/scheme/td_api.tlo and b/td/generate/scheme/td_api.tlo differ
diff --git a/td/telegram/LanguagePackManager.cpp b/td/telegram/LanguagePackManager.cpp
new file mode 100644
index 000000000..ce0a81567
--- /dev/null
+++ b/td/telegram/LanguagePackManager.cpp
@@ -0,0 +1,131 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#include "td/telegram/LanguagePackManager.h"
+
+#include "td/telegram/Global.h"
+#include "td/telegram/logevent/LogEvent.h"
+#include "td/telegram/net/NetQueryDispatcher.h"
+
+#include "td/utils/logging.h"
+
+#include "td/telegram/td_api.h"
+#include "td/telegram/telegram_api.h"
+
+namespace td {
+
+void LanguagePackManager::get_languages(Promise<td_api::object_ptr<td_api::languagePack>> promise) {
+  auto request_promise = PromiseCreator::lambda([promise = std::move(promise)](Result<NetQueryPtr> r_query) mutable {
+    auto r_result = fetch_result<telegram_api::langpack_getLanguages>(std::move(r_query));
+    if (r_result.is_error()) {
+      return promise.set_error(r_result.move_as_error());
+    }
+
+    auto languages = r_result.move_as_ok();
+    auto results = make_tl_object<td_api::languagePack>();
+    results->languages_.reserve(languages.size());
+    for (auto &language : languages) {
+      results->languages_.push_back(
+          make_tl_object<td_api::languageInfo>(language->lang_code_, language->name_, language->native_name_));
+    }
+    promise.set_value(std::move(results));
+  });
+  send_with_promise(G()->net_query_creator().create(create_storer(telegram_api::langpack_getLanguages())),
+                    std::move(request_promise));
+}
+
+void LanguagePackManager::get_language_pack_strings(string language_code, vector<string> keys,
+                                                    Promise<td_api::object_ptr<td_api::languagePackStrings>> promise) {
+  bool is_all = keys.empty();
+  auto result_promise =
+      PromiseCreator::lambda([actor_id = actor_id(this), is_all, promise = std::move(promise)](
+                                 Result<vector<tl_object_ptr<telegram_api::LangPackString>>> r_result) mutable {
+        send_closure(actor_id, &LanguagePackManager::on_get_language_pack_strings, std::move(r_result), is_all,
+                     std::move(promise));
+      });
+
+  if (is_all) {
+    auto request_promise =
+        PromiseCreator::lambda([promise = std::move(result_promise)](Result<NetQueryPtr> r_query) mutable {
+          auto r_result = fetch_result<telegram_api::langpack_getLangPack>(std::move(r_query));
+          if (r_result.is_error()) {
+            return promise.set_error(r_result.move_as_error());
+          }
+
+          auto result = r_result.move_as_ok();
+          LOG(INFO) << "Receive language pack for language " << result->lang_code_ << " from version "
+                    << result->from_version_ << " with version " << result->version_ << " of size "
+                    << result->strings_.size();
+          promise.set_value(std::move(result->strings_));
+        });
+    send_with_promise(G()->net_query_creator().create(create_storer(telegram_api::langpack_getLangPack(language_code))),
+                      std::move(request_promise));
+  } else {
+    auto request_promise =
+        PromiseCreator::lambda([promise = std::move(result_promise)](Result<NetQueryPtr> r_query) mutable {
+          auto r_result = fetch_result<telegram_api::langpack_getStrings>(std::move(r_query));
+          if (r_result.is_error()) {
+            return promise.set_error(r_result.move_as_error());
+          }
+
+          promise.set_value(r_result.move_as_ok());
+        });
+    send_with_promise(G()->net_query_creator().create(
+                          create_storer(telegram_api::langpack_getStrings(language_code, std::move(keys)))),
+                      std::move(request_promise));
+  }
+}
+
+void LanguagePackManager::on_get_language_pack_strings(
+    Result<vector<tl_object_ptr<telegram_api::LangPackString>>> r_result, bool ia_all,
+    Promise<td_api::object_ptr<td_api::languagePackStrings>> promise) {
+  if (r_result.is_error()) {
+    return promise.set_error(r_result.move_as_error());
+  }
+  auto result =
+      transform(r_result.move_as_ok(), [](const auto &string_ptr) -> tl_object_ptr<td_api::LanguagePackString> {
+        CHECK(string_ptr != nullptr);
+        switch (string_ptr->get_id()) {
+          case telegram_api::langPackString::ID: {
+            auto str = static_cast<const telegram_api::langPackString *>(string_ptr.get());
+            return make_tl_object<td_api::languagePackStringValue>(str->key_, str->value_);
+          }
+          case telegram_api::langPackStringPluralized::ID: {
+            auto str = static_cast<const telegram_api::langPackStringPluralized *>(string_ptr.get());
+            return make_tl_object<td_api::languagePackStringPluralized>(str->key_, str->zero_value_, str->one_value_,
+                                                                        str->two_value_, str->few_value_,
+                                                                        str->many_value_, str->other_value_);
+          }
+          case telegram_api::langPackStringDeleted::ID: {
+            auto str = static_cast<const telegram_api::langPackStringDeleted *>(string_ptr.get());
+            return make_tl_object<td_api::languagePackStringDeleted>(str->key_);
+          }
+          default:
+            UNREACHABLE();
+            return nullptr;
+        }
+      });
+
+  promise.set_value(make_tl_object<td_api::languagePackStrings>(std::move(result)));
+}
+
+void LanguagePackManager::on_result(NetQueryPtr query) {
+  auto token = get_link_token();
+  container_.extract(token).set_value(std::move(query));
+}
+
+void LanguagePackManager::send_with_promise(NetQueryPtr query, Promise<NetQueryPtr> promise) {
+  auto id = container_.create(std::move(promise));
+  G()->net_query_dispatcher().dispatch_with_callback(std::move(query), actor_shared(this, id));
+}
+
+void LanguagePackManager::hangup() {
+  container_.for_each(
+      [](auto id, Promise<NetQueryPtr> &promise) { promise.set_error(Status::Error(500, "Request aborted")); });
+  stop();
+}
+
+}  // namespace td
diff --git a/td/telegram/LanguagePackManager.h b/td/telegram/LanguagePackManager.h
new file mode 100644
index 000000000..4a0b9762a
--- /dev/null
+++ b/td/telegram/LanguagePackManager.h
@@ -0,0 +1,48 @@
+//
+// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2018
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+#pragma once
+
+#include "td/telegram/net/NetQuery.h"
+
+#include "td/telegram/td_api.h"
+#include "td/telegram/telegram_api.h"
+
+#include "td/actor/actor.h"
+#include "td/actor/PromiseFuture.h"
+
+#include "td/utils/Container.h"
+
+namespace td {
+
+class LanguagePackManager : public NetQueryCallback {
+ public:
+  explicit LanguagePackManager(ActorShared<> parent) : parent_(std::move(parent)) {
+  }
+
+  void get_languages(Promise<td_api::object_ptr<td_api::languagePack>> promise);
+
+  void get_language_pack_strings(string language_code, vector<string> keys,
+                                 Promise<td_api::object_ptr<td_api::languagePackStrings>> promise);
+
+ private:
+  ActorShared<> parent_;
+
+  string language_pack_;
+  string language_code_;
+
+  void on_get_language_pack_strings(Result<vector<tl_object_ptr<telegram_api::LangPackString>>> r_result, bool ia_all,
+                                    Promise<td_api::object_ptr<td_api::languagePackStrings>> promise);
+
+  void on_result(NetQueryPtr query) override;
+
+  void hangup() override;
+
+  Container<Promise<NetQueryPtr>> container_;
+  void send_with_promise(NetQueryPtr query, Promise<NetQueryPtr> promise);
+};
+
+}  // namespace td
diff --git a/td/telegram/PasswordManager.h b/td/telegram/PasswordManager.h
index 9f65875d6..6493d61e0 100644
--- a/td/telegram/PasswordManager.h
+++ b/td/telegram/PasswordManager.h
@@ -50,13 +50,13 @@ class PasswordManager : public NetQueryCallback {
 
   explicit PasswordManager(ActorShared<> parent) : parent_(std::move(parent)) {
   }
+
   void get_state(Promise<State> promise);
   void set_password(string current_password, string new_password, string new_hint, bool set_recovery_email_address,
                     string recovery_email_address, Promise<State> promise);
   void set_recovery_email_address(string password, string new_recovery_email_address, Promise<State> promise);
   void get_recovery_email_address(string password, Promise<tl_object_ptr<td_api::recoveryEmailAddress>> promise);
 
-  string last_verified_email_address_;
   void send_email_address_verification_code(
       string email, Promise<td_api::object_ptr<td_api::emailAddressAuthenticationCodeInfo>> promise);
   void resend_email_address_verification_code(
@@ -125,6 +125,8 @@ class PasswordManager : public NetQueryCallback {
   TempPasswordState temp_password_state_;
   Promise<TempState> create_temp_password_promise_;
 
+  string last_verified_email_address_;
+
   void update_password_settings(UpdateSettings update_settings, Promise<State> promise);
   void do_update_password_settings(UpdateSettings update_settings, PasswordFullState full_state, Promise<bool> promise);
   void do_get_state(Promise<PasswordState> promise);
diff --git a/td/telegram/Td.cpp b/td/telegram/Td.cpp
index 3605144c2..1b0081517 100644
--- a/td/telegram/Td.cpp
+++ b/td/telegram/Td.cpp
@@ -40,6 +40,7 @@
 #include "td/telegram/Global.h"
 #include "td/telegram/HashtagHints.h"
 #include "td/telegram/InlineQueriesManager.h"
+#include "td/telegram/LanguagePackManager.h"
 #include "td/telegram/MessageEntity.h"
 #include "td/telegram/MessageId.h"
 #include "td/telegram/MessagesManager.h"
@@ -3229,6 +3230,8 @@ bool Td::is_preinitialization_request(int32 id) {
 bool Td::is_preauthentication_request(int32 id) {
   switch (id) {
     case td_api::processDcUpdate::ID:
+    case td_api::getLanguagePack::ID:
+    case td_api::getLanguagePackStrings::ID:
     case td_api::getOption::ID:
     case td_api::setOption::ID:
     case td_api::setNetworkType::ID:
@@ -3758,6 +3761,8 @@ void Td::clear() {
   LOG(DEBUG) << "DeviceTokenManager was cleared " << timer;
   hashtag_hints_.reset();
   LOG(DEBUG) << "HashtagHints was cleared " << timer;
+  language_pack_manager_.reset();
+  LOG(DEBUG) << "LanguagePackManager was cleared " << timer;
   net_stats_manager_.reset();
   LOG(DEBUG) << "NetStatsManager was cleared " << timer;
   password_manager_.reset();
@@ -4060,6 +4065,7 @@ Status Td::init(DbKey key) {
       "ConfirmPhoneNumberManager", PhoneNumberManager::Type::ConfirmPhone, create_reference());
   device_token_manager_ = create_actor<DeviceTokenManager>("DeviceTokenManager", create_reference());
   hashtag_hints_ = create_actor<HashtagHints>("HashtagHints", "text", create_reference());
+  language_pack_manager_ = create_actor<LanguagePackManager>("LanguagePackManager", create_reference());
   password_manager_ = create_actor<PasswordManager>("PasswordManager", create_reference());
   G()->set_password_manager(password_manager_.get());
   privacy_manager_ = create_actor<PrivacyManager>("PrivacyManager", create_reference());
@@ -5922,6 +5928,23 @@ void Td::on_request(uint64 id, const td_api::resetAllNotificationSettings &reque
   send_closure(actor_id(this), &Td::send_result, id, make_tl_object<td_api::ok>());
 }
 
+void Td::on_request(uint64 id, const td_api::getLanguagePack &request) {
+  CHECK_IS_USER();
+  CREATE_REQUEST_PROMISE();
+  send_closure(language_pack_manager_, &LanguagePackManager::get_languages, std::move(promise));
+}
+
+void Td::on_request(uint64 id, td_api::getLanguagePackStrings &request) {
+  CHECK_IS_USER();
+  CLEAN_INPUT_STRING(request.language_code_);
+  for (auto &key : request.keys_) {
+    CLEAN_INPUT_STRING(key);
+  }
+  CREATE_REQUEST_PROMISE();
+  send_closure(language_pack_manager_, &LanguagePackManager::get_language_pack_strings,
+               std::move(request.language_code_), std::move(request.keys_), std::move(promise));
+}
+
 void Td::on_request(uint64 id, td_api::getOption &request) {
   CLEAN_INPUT_STRING(request.name_);
 
diff --git a/td/telegram/Td.h b/td/telegram/Td.h
index 629f703e2..43629f232 100644
--- a/td/telegram/Td.h
+++ b/td/telegram/Td.h
@@ -45,6 +45,7 @@ class DocumentsManager;
 class FileManager;
 class InlineQueriesManager;
 class HashtagHints;
+class LanguagePackManager;
 class MessagesManager;
 class NetStatsManager;
 class PasswordManager;
@@ -152,6 +153,7 @@ class Td final : public NetQueryCallback {
   ActorOwn<PhoneNumberManager> confirm_phone_number_manager_;
   ActorOwn<DeviceTokenManager> device_token_manager_;
   ActorOwn<HashtagHints> hashtag_hints_;
+  ActorOwn<LanguagePackManager> language_pack_manager_;
   ActorOwn<NetStatsManager> net_stats_manager_;
   ActorOwn<PasswordManager> password_manager_;
   ActorOwn<PrivacyManager> privacy_manager_;
@@ -749,6 +751,10 @@ class Td final : public NetQueryCallback {
 
   void on_request(uint64 id, td_api::reportChat &request);
 
+  void on_request(uint64 id, const td_api::getLanguagePack &request);
+
+  void on_request(uint64 id, td_api::getLanguagePackStrings &request);
+
   void on_request(uint64 id, td_api::getOption &request);
 
   void on_request(uint64 id, td_api::setOption &request);
diff --git a/td/telegram/cli.cpp b/td/telegram/cli.cpp
index 635eb701e..67cad2455 100644
--- a/td/telegram/cli.cpp
+++ b/td/telegram/cli.cpp
@@ -1699,6 +1699,14 @@ class CliClient final : public Actor {
 
       std::tie(chat_id, message_id) = split(args);
       send_request(make_tl_object<td_api::deleteChatReplyMarkup>(as_chat_id(chat_id), as_message_id(message_id)));
+    } else if (op == "glp") {
+      send_request(make_tl_object<td_api::getLanguagePack>());
+    } else if (op == "glps") {
+      string language_code;
+      string keys;
+
+      std::tie(language_code, keys) = split(args);
+      send_request(make_tl_object<td_api::getLanguagePackStrings>(language_code, full_split(keys)));
     } else if (op == "go") {
       send_request(make_tl_object<td_api::getOption>(args));
     } else if (op == "sob") {
diff --git a/tdactor/td/actor/Condition.h b/tdactor/td/actor/Condition.h
index c3799df48..e5065dc97 100644
--- a/tdactor/td/actor/Condition.h
+++ b/tdactor/td/actor/Condition.h
@@ -11,6 +11,7 @@
 #include "td/utils/logging.h"
 
 namespace td {
+
 class Condition {
   class Helper : public Actor {
    public:
@@ -44,4 +45,5 @@ class Condition {
   ActorId<Helper> actor_;
   ActorOwn<Helper> own_actor_;
 };
+
 }  // namespace td
diff --git a/tdactor/td/actor/MultiPromise.cpp b/tdactor/td/actor/MultiPromise.cpp
index 0d98f5cfb..9000cfeca 100644
--- a/tdactor/td/actor/MultiPromise.cpp
+++ b/tdactor/td/actor/MultiPromise.cpp
@@ -7,6 +7,7 @@
 #include "td/actor/MultiPromise.h"
 
 namespace td {
+
 void MultiPromiseActor::add_promise(Promise<Unit> &&promise) {
   promises_.emplace_back(std::move(promise));
 }
@@ -87,4 +88,5 @@ MultiPromiseActorSafe::~MultiPromiseActorSafe() {
     register_existing_actor(std::move(multi_promise_)).release();
   }
 }
+
 }  // namespace td
diff --git a/tdactor/td/actor/PromiseFuture.h b/tdactor/td/actor/PromiseFuture.h
index 81af29e24..57ee33252 100644
--- a/tdactor/td/actor/PromiseFuture.h
+++ b/tdactor/td/actor/PromiseFuture.h
@@ -22,6 +22,7 @@
 #include <utility>
 
 namespace td {
+
 template <class T = Unit>
 class PromiseInterface {
  public:
@@ -651,4 +652,5 @@ class PromiseCreator {
     return Promise<T>(std::make_unique<PromiseActor<T>>(std::move(from)));
   }
 };
+
 }  // namespace td
diff --git a/tdactor/td/actor/SchedulerLocalStorage.h b/tdactor/td/actor/SchedulerLocalStorage.h
index f505836a1..ab245a895 100644
--- a/tdactor/td/actor/SchedulerLocalStorage.h
+++ b/tdactor/td/actor/SchedulerLocalStorage.h
@@ -14,6 +14,7 @@
 #include <functional>
 
 namespace td {
+
 template <class T>
 class SchedulerLocalStorage {
  public:
diff --git a/tdactor/td/actor/SignalSlot.h b/tdactor/td/actor/SignalSlot.h
index 73b48f58e..74e46754e 100644
--- a/tdactor/td/actor/SignalSlot.h
+++ b/tdactor/td/actor/SignalSlot.h
@@ -9,7 +9,9 @@
 #include "td/actor/actor.h"
 
 namespace td {
+
 class Slot;
+
 class Signal {
  public:
   void emit();
@@ -20,6 +22,7 @@ class Signal {
  private:
   ActorId<Slot> slot_id_;
 };
+
 class Slot final : public Actor {
  public:
   Slot() = default;
@@ -101,6 +104,7 @@ class Slot final : public Actor {
     signal();
   }
 };
+
 inline void Signal::emit() {
   send_closure(slot_id_, &Slot::signal);
 }
diff --git a/tdactor/td/actor/Timeout.h b/tdactor/td/actor/Timeout.h
index a3a9ba191..11ee040da 100644
--- a/tdactor/td/actor/Timeout.h
+++ b/tdactor/td/actor/Timeout.h
@@ -15,6 +15,7 @@
 #include <set>
 
 namespace td {
+
 class Timeout final : public Actor {
  public:
   using Data = void *;