diff --git a/compiler/api/source/auth_key.tl b/compiler/api/source/auth_key.tl
index 77c4c602..e0af9dcd 100644
--- a/compiler/api/source/auth_key.tl
+++ b/compiler/api/source/auth_key.tl
@@ -29,6 +29,7 @@ destroy_auth_key_fail#ea109b13 = DestroyAuthKeyRes;
 ---functions---
 
 req_pq#60469778 nonce:int128 = ResPQ;
+req_pq_multi#be7e8ef1 nonce:int128 = ResPQ;
 
 req_DH_params#d712e4be nonce:int128 server_nonce:int128 p:bytes q:bytes public_key_fingerprint:long encrypted_data:bytes = Server_DH_Params;
 
diff --git a/examples/README.md b/examples/README.md
index 3e4a7b85..6f640ef4 100644
--- a/examples/README.md
+++ b/examples/README.md
@@ -8,7 +8,9 @@ you have to change are the target chats (username, id) and file paths for sendin
 - [**hello_world.py**](https://github.com/pyrogram/pyrogram/blob/master/examples/hello_world.py)
 - [**get_history.py**](https://github.com/pyrogram/pyrogram/blob/master/examples/get_history.py)
 - [**get_participants.py**](https://github.com/pyrogram/pyrogram/blob/master/examples/get_participants.py)
+- [**inline_bots.py**](https://github.com/pyrogram/pyrogram/blob/master/examples/inline_bots.py)
 - [**updates.py**](https://github.com/pyrogram/pyrogram/blob/master/examples/updates.py)
 - [**simple_echo.py**](https://github.com/pyrogram/pyrogram/blob/master/examples/simple_echo.py)
 - [**advanced_echo.py**](https://github.com/pyrogram/pyrogram/blob/master/examples/advanced_echo.py)
 - [**advanced_echo2.py**](https://github.com/pyrogram/pyrogram/blob/master/examples/advanced_echo2.py)
+- [**welcome_bot.py**](https://github.com/pyrogram/pyrogram/blob/master/examples/welcome_bot.py)
diff --git a/examples/welcome_bot.py b/examples/welcome_bot.py
new file mode 100644
index 00000000..d2e00a88
--- /dev/null
+++ b/examples/welcome_bot.py
@@ -0,0 +1,52 @@
+from pyrogram import Client, Emoji
+from pyrogram.api import types
+
+"""
+This is the Welcome Bot in @PyrogramChat
+The code is commented to help you understand each part
+
+It also uses the Emoji module to easily add emojis in your text messages
+"""
+
+# Your Supergroup ID
+SUPERGROUP_ID = 1387666944
+
+
+def update_handler(client, update, users, chats):
+    # Supergroup messages are contained in the "UpdateNewChannelMessage" update type
+    if isinstance(update, types.UpdateNewChannelMessage):
+        message = update.message
+        # When a user joins, a "MessageService" is received
+        if isinstance(message, types.MessageService):
+            # Check if the message is sent to your SUPERGROUP_ID
+            if message.to_id.channel_id == SUPERGROUP_ID:
+                # A "MessageService" contains the "action" field.
+                # The action for user joins is "MessageActionChatAddUser" if the user
+                # joined using the username, otherwise is "MessageActionChatJoinedByLink" if
+                # the user joined a private group by link
+                if isinstance(message.action, (types.MessageActionChatAddUser, types.MessageActionChatJoinedByLink)):
+                    # Now send the welcome message. Extra info about a user (such as the first_name, username, ...)
+                    # are contained in the users dictionary and can be accessed by the user ID
+                    client.send_message(
+                        SUPERGROUP_ID,
+                        "{} Welcome to [Pyrogram](https://docs.pyrogram.ml/)'s "
+                        "group chat, [{}](tg://user?id={})!".format(
+                            Emoji.SPARKLES,  # Add an emoji
+                            users[message.from_id].first_name,
+                            users[message.from_id].id
+                        ),
+                        reply_to_message_id=message.id,
+                        disable_web_page_preview=True
+                    )
+
+
+def main():
+    client = Client("example")
+    client.set_update_handler(update_handler)
+
+    client.start()
+    client.idle()
+
+
+if __name__ == "__main__":
+    main()
diff --git a/pyrogram/__init__.py b/pyrogram/__init__.py
index db7a3a84..b2b85d0c 100644
--- a/pyrogram/__init__.py
+++ b/pyrogram/__init__.py
@@ -23,7 +23,7 @@ __copyright__ = "Copyright (C) 2017-2018 Dan Tès <https://github.com/delivrance
     "e" if sys.getfilesystemencoding() == "ascii" else "\xe8"
 )
 __license__ = "GNU Lesser General Public License v3 or later (LGPLv3+)"
-__version__ = "0.6.1"
+__version__ = "0.6.2"
 
 from .api.errors import Error
 from .client import ChatAction
diff --git a/pyrogram/client/client.py b/pyrogram/client/client.py
index 0a5e6ef1..e554ae3a 100644
--- a/pyrogram/client/client.py
+++ b/pyrogram/client/client.py
@@ -256,15 +256,16 @@ class Client:
 
             if isinstance(entity, Chat):
                 chat_id = entity.id
+                peer_id = -chat_id
 
-                if chat_id in self.peers_by_id:
+                if peer_id in self.peers_by_id:
                     continue
 
                 input_peer = InputPeerChat(
                     chat_id=chat_id
                 )
 
-                self.peers_by_id[chat_id] = input_peer
+                self.peers_by_id[peer_id] = input_peer
 
             if isinstance(entity, Channel):
                 channel_id = entity.id
@@ -571,6 +572,8 @@ class Client:
                     elif confirm in ("n", "2"):
                         self.phone_number = input("Enter phone number: ")
 
+            self.phone_number = self.phone_number.strip("+")
+
             try:
                 r = self.send(
                     functions.auth.SendCode(
@@ -886,17 +889,20 @@ class Client:
             if isinstance(peer_id, types.PeerUser):
                 peer_id = peer_id.user_id
             elif isinstance(peer_id, types.PeerChat):
-                peer_id = peer_id.chat_id
+                peer_id = -peer_id.chat_id
             elif isinstance(peer_id, types.PeerChannel):
                 peer_id = int("-100" + str(peer_id.channel_id))
 
-        try:
+        try:  # User
             return self.peers_by_id[peer_id]
         except KeyError:
-            try:
-                return self.peers_by_id[int("-100" + str(peer_id))]
+            try:  # Chat
+                return self.peers_by_id[-peer_id]
             except KeyError:
-                raise PeerIdInvalid
+                try:  # Channel
+                    return self.peers_by_id[int("-100" + str(peer_id))]
+                except (KeyError, ValueError):
+                    raise PeerIdInvalid
 
     def get_me(self):
         """A simple method for testing the user authorization. Requires no parameters.
@@ -1014,7 +1020,8 @@ class Client:
                    parse_mode: str = "",
                    ttl_seconds: int = None,
                    disable_notification: bool = None,
-                   reply_to_message_id: int = None):
+                   reply_to_message_id: int = None,
+                   progress: callable = None):
         """Use this method to send photos.
 
         Args:
@@ -1047,6 +1054,17 @@ class Client:
             reply_to_message_id (:obj:`int`, optional):
                 If the message is a reply, ID of the original message.
 
+            progress (:obj:`callable`):
+                Pass a callback function to view the upload progress.
+                The function must accept two arguments (current, total).
+
+        Other Parameters:
+            current (:obj:`int`):
+                The amount of bytes uploaded so far.
+
+            total (:obj:`int`):
+                The size of the file.
+
         Returns:
             On success, the sent Message is returned.
 
@@ -1054,7 +1072,7 @@ class Client:
             :class:`pyrogram.Error`
         """
         style = self.html if parse_mode.lower() == "html" else self.markdown
-        file = self.save_file(photo)
+        file = self.save_file(photo, progress=progress)
 
         while True:
             try:
@@ -1085,7 +1103,8 @@ class Client:
                    performer: str = None,
                    title: str = None,
                    disable_notification: bool = None,
-                   reply_to_message_id: int = None):
+                   reply_to_message_id: int = None,
+                   progress: callable = None):
         """Use this method to send audio files.
 
         For sending voice messages, use the :obj:`send_voice` method instead.
@@ -1124,6 +1143,17 @@ class Client:
             reply_to_message_id (:obj:`int`, optional):
                 If the message is a reply, ID of the original message.
 
+            progress (:obj:`callable`):
+                Pass a callback function to view the upload progress.
+                The function must accept two arguments (current, total).
+
+        Other Parameters:
+            current (:obj:`int`):
+                The amount of bytes uploaded so far.
+
+            total (:obj:`int`):
+                The size of the file.
+
         Returns:
             On success, the sent Message is returned.
 
@@ -1131,7 +1161,7 @@ class Client:
             :class:`pyrogram.Error`
         """
         style = self.html if parse_mode.lower() == "html" else self.markdown
-        file = self.save_file(audio)
+        file = self.save_file(audio, progress=progress)
 
         while True:
             try:
@@ -1167,7 +1197,8 @@ class Client:
                       caption: str = "",
                       parse_mode: str = "",
                       disable_notification: bool = None,
-                      reply_to_message_id: int = None):
+                      reply_to_message_id: int = None,
+                      progress: callable = None):
         """Use this method to send general files.
 
         Args:
@@ -1195,6 +1226,17 @@ class Client:
             reply_to_message_id (:obj:`int`, optional):
                 If the message is a reply, ID of the original message.
 
+            progress (:obj:`callable`):
+                Pass a callback function to view the upload progress.
+                The function must accept two arguments (current, total).
+
+        Other Parameters:
+            current (:obj:`int`):
+                The amount of bytes uploaded so far.
+
+            total (:obj:`int`):
+                The size of the file.
+
         Returns:
             On success, the sent Message is returned.
 
@@ -1202,7 +1244,7 @@ class Client:
             :class:`pyrogram.Error`
         """
         style = self.html if parse_mode.lower() == "html" else self.markdown
-        file = self.save_file(document)
+        file = self.save_file(document, progress=progress)
 
         while True:
             try:
@@ -1231,7 +1273,8 @@ class Client:
                      chat_id: int or str,
                      sticker: str,
                      disable_notification: bool = None,
-                     reply_to_message_id: int = None):
+                     reply_to_message_id: int = None,
+                     progress: callable = None):
         """Use this method to send .webp stickers.
 
         Args:
@@ -1251,13 +1294,24 @@ class Client:
             reply_to_message_id (:obj:`int`, optional):
                 If the message is a reply, ID of the original message.
 
+            progress (:obj:`callable`):
+                Pass a callback function to view the upload progress.
+                The function must accept two arguments (current, total).
+
+        Other Parameters:
+            current (:obj:`int`):
+                The amount of bytes uploaded so far.
+
+            total (:obj:`int`):
+                The size of the file.
+
         Returns:
             On success, the sent Message is returned.
 
         Raises:
             :class:`pyrogram.Error`
         """
-        file = self.save_file(sticker)
+        file = self.save_file(sticker, progress=progress)
 
         while True:
             try:
@@ -1290,9 +1344,11 @@ class Client:
                    duration: int = 0,
                    width: int = 0,
                    height: int = 0,
+                   thumb: str = None,
                    supports_streaming: bool = None,
                    disable_notification: bool = None,
-                   reply_to_message_id: int = None):
+                   reply_to_message_id: int = None,
+                   progress: callable = None):
         """Use this method to send video files.
 
         Args:
@@ -1322,6 +1378,11 @@ class Client:
             height (:obj:`int`, optional):
                 Video height.
 
+            thumb (:obj:`str`, optional):
+                Video thumbnail.
+                Pass a file path as string to send an image that exists on your local machine.
+                Thumbnail should have 90 or less pixels of width and 90 or less pixels of height.
+
             supports_streaming (:obj:`bool`, optional):
                 Pass True, if the uploaded video is suitable for streaming.
 
@@ -1332,6 +1393,17 @@ class Client:
             reply_to_message_id (:obj:`int`, optional):
                 If the message is a reply, ID of the original message.
 
+            progress (:obj:`callable`):
+                Pass a callback function to view the upload progress.
+                The function must accept two arguments (current, total).
+
+        Other Parameters:
+            current (:obj:`int`):
+                The amount of bytes uploaded so far.
+
+            total (:obj:`int`):
+                The size of the file.
+
         Returns:
             On success, the sent Message is returned.
 
@@ -1339,7 +1411,8 @@ class Client:
             :class:`pyrogram.Error`
         """
         style = self.html if parse_mode.lower() == "html" else self.markdown
-        file = self.save_file(video)
+        file = self.save_file(video, progress=progress)
+        file_thumb = None if thumb is None else self.save_file(thumb)
 
         while True:
             try:
@@ -1349,6 +1422,7 @@ class Client:
                         media=types.InputMediaUploadedDocument(
                             mime_type=mimetypes.types_map[".mp4"],
                             file=file,
+                            thumb=file_thumb,
                             attributes=[
                                 types.DocumentAttributeVideo(
                                     supports_streaming=supports_streaming,
@@ -1377,7 +1451,8 @@ class Client:
                    parse_mode: str = "",
                    duration: int = 0,
                    disable_notification: bool = None,
-                   reply_to_message_id: int = None):
+                   reply_to_message_id: int = None,
+                   progress: callable = None):
         """Use this method to send audio files.
 
         Args:
@@ -1408,6 +1483,17 @@ class Client:
             reply_to_message_id (:obj:`int`, optional):
                 If the message is a reply, ID of the original message
 
+            progress (:obj:`callable`):
+                Pass a callback function to view the upload progress.
+                The function must accept two arguments (current, total).
+
+        Other Parameters:
+            current (:obj:`int`):
+                The amount of bytes uploaded so far.
+
+            total (:obj:`int`):
+                The size of the file.
+
         Returns:
             On success, the sent Message is returned.
 
@@ -1415,7 +1501,7 @@ class Client:
             :class:`pyrogram.Error`
         """
         style = self.html if parse_mode.lower() == "html" else self.markdown
-        file = self.save_file(voice)
+        file = self.save_file(voice, progress=progress)
 
         while True:
             try:
@@ -1449,7 +1535,8 @@ class Client:
                         duration: int = 0,
                         length: int = 1,
                         disable_notification: bool = None,
-                        reply_to_message_id: int = None):
+                        reply_to_message_id: int = None,
+                        progress: callable = None):
         """Use this method to send video messages.
 
         Args:
@@ -1475,13 +1562,24 @@ class Client:
             reply_to_message_id (:obj:`int`, optional):
                 If the message is a reply, ID of the original message
 
+            progress (:obj:`callable`):
+                Pass a callback function to view the upload progress.
+                The function must accept two arguments (current, total).
+
+        Other Parameters:
+            current (:obj:`int`):
+                The amount of bytes uploaded so far.
+
+            total (:obj:`int`):
+                The size of the file.
+
         Returns:
             On success, the sent Message is returned.
 
         Raises:
             :class:`pyrogram.Error`
         """
-        file = self.save_file(video_note)
+        file = self.save_file(video_note, progress=progress)
 
         while True:
             try:
@@ -1511,6 +1609,7 @@ class Client:
             else:
                 return r
 
+    # TODO: Add progress parameter
     def send_media_group(self,
                          chat_id: int or str,
                          media: list,
@@ -1965,7 +2064,11 @@ class Client:
             )
 
     # TODO: Remove redundant code
-    def save_file(self, path: str, file_id: int = None, file_part: int = 0):
+    def save_file(self,
+                  path: str,
+                  file_id: int = None,
+                  file_part: int = 0,
+                  progress: callable = None):
         part_size = 512 * 1024
         file_size = os.path.getsize(path)
         file_total_parts = math.ceil(file_size / part_size)
@@ -2005,6 +2108,9 @@ class Client:
                         md5_sum.update(chunk)
 
                     file_part += 1
+
+                    if progress:
+                        progress(min(file_part * part_size, file_size), file_size)
         except Exception as e:
             log.error(e)
         else:
@@ -2102,7 +2208,7 @@ class Client:
                         offset += limit
 
                         if progress:
-                            progress(offset, size)
+                            progress(min(offset, size), size)
 
                         r = session.send(
                             functions.upload.GetFile(
@@ -2466,10 +2572,10 @@ class Client:
 
             progress (:obj:`callable`):
                 Pass a callback function to view the download progress.
-                The function must accept two arguments (progress, total).
+                The function must accept two arguments (current, total).
 
         Other Parameters:
-            progress (:obj:`int`):
+            current (:obj:`int`):
                 The amount of bytes downloaded so far.
 
             total (:obj:`int`):
@@ -2648,3 +2754,39 @@ class Client:
                 reply_to_msg_id=reply_to_message_id
             )
         )
+
+    def get_messages(self,
+                     chat_id: int or str,
+                     message_ids: list):
+        """Use this method to get messages that belong to a specific chat.
+        You can retrieve up to 200 messages at once.
+
+        Args:
+            chat_id (:obj:`int` | :obj:`str`):
+                Unique identifier for the target chat or username of the target channel/supergroup
+                (in the format @username). For your personal cloud storage (Saved Messages) you can
+                simply use "me" or "self". Phone numbers that exist in your Telegram address book are also supported.
+
+            message_ids (:obj:`list`):
+                A list of Message identifiers in the chat specified in *chat_id*.
+
+        Returns:
+            List of the requested messages
+
+        Raises:
+            :class:`pyrogram.Error`
+        """
+        peer = self.resolve_peer(chat_id)
+        message_ids = [types.InputMessageID(i) for i in message_ids]
+
+        if isinstance(peer, types.InputPeerChannel):
+            rpc = functions.channels.GetMessages(
+                channel=peer,
+                id=message_ids
+            )
+        else:
+            rpc = functions.messages.GetMessages(
+                id=message_ids
+            )
+
+        return self.send(rpc)
diff --git a/pyrogram/client/input_phone_contact.py b/pyrogram/client/input_phone_contact.py
index 002a3121..9268ca0a 100644
--- a/pyrogram/client/input_phone_contact.py
+++ b/pyrogram/client/input_phone_contact.py
@@ -17,6 +17,7 @@
 # along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
 
 from pyrogram.api.types import InputPhoneContact as RawInputPhoneContact
+from pyrogram.session.internals import MsgId
 
 
 class InputPhoneContact:
@@ -36,7 +37,7 @@ class InputPhoneContact:
 
     def __new__(cls, phone: str, first_name: str, last_name: str = ""):
         return RawInputPhoneContact(
-            client_id=0,
+            client_id=MsgId(),
             phone="+" + phone.strip("+"),
             first_name=first_name,
             last_name=last_name
diff --git a/pyrogram/crypto/rsa.py b/pyrogram/crypto/rsa.py
index 1e733e8f..9f02e2cc 100644
--- a/pyrogram/crypto/rsa.py
+++ b/pyrogram/crypto/rsa.py
@@ -23,10 +23,16 @@ PublicKey = namedtuple("PublicKey", ["m", "e"])
 
 class RSA:
     # To get modulus and exponent:
+    #
+    # [RSA PUBLIC KEY]:
     # grep -v -- - public.key | tr -d \\n | base64 -d | openssl asn1parse -inform DER -i
+    #
+    # [PUBLIC KEY]:
+    # openssl rsa -pubin -in key -text -noout
 
     server_public_keys = {
-        0xc3b42b026ce86b21 - (1 << 64): PublicKey(  # Telegram servers
+        # -4344800451088585951
+        0xc3b42b026ce86b21 - (1 << 64): PublicKey(  # Telegram servers #1
             # -----BEGIN RSA PUBLIC KEY-----
             # MIIBCgKCAQEAwVACPi9w23mF3tBkdZz+zwrzKOaaQdr01vAbU4E1pvkfj4sqDsm6
             # lyDONS789sVoD/xCS9Y0hkkC3gtL1tSfTlgCMOOul9lcixlEKzwKENj1Yz/s7daS
@@ -48,6 +54,108 @@ class RSA:
             ),  # Modulus
             int("010001", 16)  # Exponent
         ),
+
+        # 847625836280919973
+        0x10bc35f3509f7b7a5 - (1 << 64): PublicKey(  # Telegram servers #2
+            # -----BEGIN PUBLIC KEY-----
+            # MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAruw2yP/BCcsJliRoW5eB
+            # VBVle9dtjJw+OYED160Wybum9SXtBBLXriwt4rROd9csv0t0OHCaTmRqBcQ0J8fx
+            # hN6/cpR1GWgOZRUAiQxoMnlt0R93LCX/j1dnVa/gVbCjdSxpbrfY2g2L4frzjJvd
+            # l84Kd9ORYjDEAyFnEA7dD556OptgLQQ2e2iVNq8NZLYTzLp5YpOdO1doK+ttrltg
+            # gTCy5SrKeLoCPPbOgGsdxJxyz5KKcZnSLj16yE5HvJQn0CNpRdENvRUXe6tBP78O
+            # 39oJ8BTHp9oIjd6XWXAsp2CvK45Ol8wFXGF710w9lwCGNbmNxNYhtIkdqfsEcwR5
+            # JwIDAQAB
+            # -----END PUBLIC KEY-----
+            int(
+                "AEEC36C8FFC109CB099624685B97815415657BD76D8C9C3E398103D7AD16C9BB"
+                "A6F525ED0412D7AE2C2DE2B44E77D72CBF4B7438709A4E646A05C43427C7F184"
+                "DEBF72947519680E651500890C6832796DD11F772C25FF8F576755AFE055B0A3"
+                "752C696EB7D8DA0D8BE1FAF38C9BDD97CE0A77D3916230C4032167100EDD0F9E"
+                "7A3A9B602D04367B689536AF0D64B613CCBA7962939D3B57682BEB6DAE5B6081"
+                "30B2E52ACA78BA023CF6CE806B1DC49C72CF928A7199D22E3D7AC84E47BC9427"
+                "D0236945D10DBD15177BAB413FBF0EDFDA09F014C7A7DA088DDE9759702CA760"
+                "AF2B8E4E97CC055C617BD74C3D97008635B98DC4D621B4891DA9FB0473047927",
+                16
+            ),  # Modulus
+            int("010001", 16)  # Exponent
+        ),
+
+        # 1562291298945373506
+        0x115ae5fa8b5529542 - (1 << 64): PublicKey(  # Telegram servers #3
+            # -----BEGIN PUBLIC KEY-----
+            # MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvfLHfYH2r9R70w8prHbl
+            # Wt/nDkh+XkgpflqQVcnAfSuTtO05lNPspQmL8Y2XjVT4t8cT6xAkdgfmmvnvRPOO
+            # KPi0OfJXoRVylFzAQG/j83u5K3kRLbae7fLccVhKZhY46lvsueI1hQdLgNV9n1cQ
+            # 3TDS2pQOCtovG4eDl9wacrXOJTG2990VjgnIKNA0UMoP+KF03qzryqIt3oTvZq03
+            # DyWdGK+AZjgBLaDKSnC6qD2cFY81UryRWOab8zKkWAnhw2kFpcqhI0jdV5QaSCEx
+            # vnsjVaX0Y1N0870931/5Jb9ICe4nweZ9kSDF/gip3kWLG0o8XQpChDfyvsqB9OLV
+            # /wIDAQAB
+            # -----END PUBLIC KEY-----
+            int(
+                "BDF2C77D81F6AFD47BD30F29AC76E55ADFE70E487E5E48297E5A9055C9C07D2B"
+                "93B4ED3994D3ECA5098BF18D978D54F8B7C713EB10247607E69AF9EF44F38E28"
+                "F8B439F257A11572945CC0406FE3F37BB92B79112DB69EEDF2DC71584A661638"
+                "EA5BECB9E23585074B80D57D9F5710DD30D2DA940E0ADA2F1B878397DC1A72B5"
+                "CE2531B6F7DD158E09C828D03450CA0FF8A174DEACEBCAA22DDE84EF66AD370F"
+                "259D18AF806638012DA0CA4A70BAA83D9C158F3552BC9158E69BF332A45809E1"
+                "C36905A5CAA12348DD57941A482131BE7B2355A5F4635374F3BD3DDF5FF925BF"
+                "4809EE27C1E67D9120C5FE08A9DE458B1B4A3C5D0A428437F2BECA81F4E2D5FF",
+                16
+            ),  # Modulus
+            int("010001", 16)  # Exponent
+        ),
+
+        # -5859577972006586033
+        0xaeae98e13cd7f94f - (1 << 64): PublicKey(  # Telegram servers #4
+            # -----BEGIN PUBLIC KEY-----
+            # MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAs/ditzm+mPND6xkhzwFI
+            # z6J/968CtkcSE/7Z2qAJiXbmZ3UDJPGrzqTDHkO30R8VeRM/Kz2f4nR05GIFiITl
+            # 4bEjvpy7xqRDspJcCFIOcyXm8abVDhF+th6knSU0yLtNKuQVP6voMrnt9MV1X92L
+            # GZQLgdHZbPQz0Z5qIpaKhdyA8DEvWWvSUwwc+yi1/gGaybwlzZwqXYoPOhwMebzK
+            # Uk0xW14htcJrRrq+PXXQbRzTMynseCoPIoke0dtCodbA3qQxQovE16q9zz4Otv2k
+            # 4j63cz53J+mhkVWAeWxVGI0lltJmWtEYK6er8VqqWot3nqmWMXogrgRLggv/Nbbo
+            # oQIDAQAB
+            # -----END PUBLIC KEY-----
+            int(
+                "B3F762B739BE98F343EB1921CF0148CFA27FF7AF02B6471213FED9DAA0098976"
+                "E667750324F1ABCEA4C31E43B7D11F1579133F2B3D9FE27474E462058884E5E1"
+                "B123BE9CBBC6A443B2925C08520E7325E6F1A6D50E117EB61EA49D2534C8BB4D"
+                "2AE4153FABE832B9EDF4C5755FDD8B19940B81D1D96CF433D19E6A22968A85DC"
+                "80F0312F596BD2530C1CFB28B5FE019AC9BC25CD9C2A5D8A0F3A1C0C79BCCA52"
+                "4D315B5E21B5C26B46BABE3D75D06D1CD33329EC782A0F22891ED1DB42A1D6C0"
+                "DEA431428BC4D7AABDCF3E0EB6FDA4E23EB7733E7727E9A1915580796C55188D"
+                "2596D2665AD1182BA7ABF15AAA5A8B779EA996317A20AE044B820BFF35B6E8A1",
+                16
+            ),  # Modulus
+            int("010001", 16)  # Exponent
+        ),
+
+        # 6491968696586960280
+        0x15a181b2235057d98 - (1 << 64): PublicKey(  # Telegram servers #5
+            # -----BEGIN PUBLIC KEY-----
+            # MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvmpxVY7ld/8DAjz6F6q0
+            # 5shjg8/4p6047bn6/m8yPy1RBsvIyvuDuGnP/RzPEhzXQ9UJ5Ynmh2XJZgHoE9xb
+            # nfxL5BXHplJhMtADXKM9bWB11PU1Eioc3+AXBB8QiNFBn2XI5UkO5hPhbb9mJpjA
+            # 9Uhw8EdfqJP8QetVsI/xrCEbwEXe0xvifRLJbY08/Gp66KpQvy7g8w7VB8wlgePe
+            # xW3pT13Ap6vuC+mQuJPyiHvSxjEKHgqePji9NP3tJUFQjcECqcm0yV7/2d0t/pbC
+            # m+ZH1sadZspQCEPPrtbkQBlvHb4OLiIWPGHKSMeRFvp3IWcmdJqXahxLCUS1Eh6M
+            # AQIDAQAB
+            # -----END PUBLIC KEY-----
+            int(
+                "BE6A71558EE577FF03023CFA17AAB4E6C86383CFF8A7AD38EDB9FAFE6F323F2D"
+                "5106CBC8CAFB83B869CFFD1CCF121CD743D509E589E68765C96601E813DC5B9D"
+                "FC4BE415C7A6526132D0035CA33D6D6075D4F535122A1CDFE017041F1088D141"
+                "9F65C8E5490EE613E16DBF662698C0F54870F0475FA893FC41EB55B08FF1AC21"
+                "1BC045DED31BE27D12C96D8D3CFC6A7AE8AA50BF2EE0F30ED507CC2581E3DEC5"
+                "6DE94F5DC0A7ABEE0BE990B893F2887BD2C6310A1E0A9E3E38BD34FDED254150"
+                "8DC102A9C9B4C95EFFD9DD2DFE96C29BE647D6C69D66CA500843CFAED6E44019"
+                "6F1DBE0E2E22163C61CA48C79116FA77216726749A976A1C4B0944B5121E8C01",
+                16
+            ),  # Modulus
+            int("010001", 16)  # Exponent
+        ),
+
+        # 6427105915145367799
         0x15931aac70e0d30f7 - (1 << 64): PublicKey(  # CDN DC-121
             # -----BEGIN RSA PUBLIC KEY-----
             # MIIBCgKCAQEA+Lf3PvgE1yxbJUCMaEAkV0QySTVpnaDjiednB5RbtNWjCeqSVakY
@@ -70,6 +178,8 @@ class RSA:
             ),  # Modulus
             int("010001", 16)  # Exponent
         ),
+
+        # 2685959930972952888
         0x1254672538e935938 - (1 << 64): PublicKey(  # CDN DC-140
             # -----BEGIN RSA PUBLIC KEY-----
             # MIIBCgKCAQEAzuHVC7sE50Kho/yDVZtWnlmA5Bf/aM8KZY3WzS16w6w1sBqipj8o
diff --git a/pyrogram/session/auth.py b/pyrogram/session/auth.py
index f48242e6..a1d8fd76 100644
--- a/pyrogram/session/auth.py
+++ b/pyrogram/session/auth.py
@@ -91,8 +91,19 @@ class Auth:
                 # Step 1; Step 2
                 nonce = int.from_bytes(urandom(16), "little", signed=True)
                 log.debug("Send req_pq: {}".format(nonce))
-                res_pq = self.send(functions.ReqPq(nonce))
+                res_pq = self.send(functions.ReqPqMulti(nonce))
                 log.debug("Got ResPq: {}".format(res_pq.server_nonce))
+                log.debug("Server public key fingerprints: {}".format(res_pq.server_public_key_fingerprints))
+
+                for i in res_pq.server_public_key_fingerprints:
+                    if i in RSA.server_public_keys:
+                        log.debug("Using fingerprint: {}".format(i))
+                        public_key_fingerprint = i
+                        break
+                    else:
+                        log.debug("Fingerprint unknown: {}".format(i))
+                else:
+                    raise Exception("Public key not found")
 
                 # Step 3
                 pq = int.from_bytes(res_pq.pq, "big")
@@ -118,7 +129,7 @@ class Auth:
                 sha = sha1(data).digest()
                 padding = urandom(- (len(data) + len(sha)) % 255)
                 data_with_hash = sha + data + padding
-                encrypted_data = RSA.encrypt(data_with_hash, res_pq.server_public_key_fingerprints[0])
+                encrypted_data = RSA.encrypt(data_with_hash, public_key_fingerprint)
 
                 log.debug("Done encrypt data with RSA")
 
@@ -130,7 +141,7 @@ class Auth:
                         server_nonce,
                         int.to_bytes(p, 4, "big"),
                         int.to_bytes(q, 4, "big"),
-                        res_pq.server_public_key_fingerprints[0],
+                        public_key_fingerprint,
                         encrypted_data
                     )
                 )