diff --git a/telethon/client/auth.py b/telethon/client/auth.py
index 7c1ed6b6..5650cd97 100644
--- a/telethon/client/auth.py
+++ b/telethon/client/auth.py
@@ -291,7 +291,6 @@ class AuthMethods(MessageParseMethods, UserMethods):
         self._self_input_peer = utils.get_input_peer(
             result.user, allow_self=False
         )
-        self._authorized = True
         return result.user
 
     async def sign_up(self, code, first_name, last_name=''):
@@ -344,7 +343,6 @@ class AuthMethods(MessageParseMethods, UserMethods):
         self._self_input_peer = utils.get_input_peer(
             result.user, allow_self=False
         )
-        self._authorized = True
         return result.user
 
     async def send_code_request(self, phone, *, force_sms=False):
@@ -398,9 +396,10 @@ class AuthMethods(MessageParseMethods, UserMethods):
         except errors.RPCError:
             return False
 
+        self._self_input_peer = None
+        self._state.pts = -1
         await self.disconnect()
         await self.session.delete()
-        self._authorized = False
         return True
 
     async def edit_2fa(
diff --git a/telethon/client/telegrambaseclient.py b/telethon/client/telegrambaseclient.py
index 98e14592..cecd6236 100644
--- a/telethon/client/telegrambaseclient.py
+++ b/telethon/client/telegrambaseclient.py
@@ -246,9 +246,6 @@ class TelegramBaseClient(abc.ABC):
         self._borrowed_senders = {}
         self._borrow_sender_lock = asyncio.Lock(loop=self._loop)
 
-        # Save whether the user is authorized here (a.k.a. logged in)
-        self._authorized = None  # None = We don't know yet
-
         self._updates_handle = None
         self._last_request = time.time()
         self._channel_pts = {}
@@ -380,7 +377,6 @@ class TelegramBaseClient(abc.ABC):
         Callback from the sender whenever it needed to generate a
         new authorization key. This means we are not authorized.
         """
-        self._authorized = None
         self.session.auth_key = auth_key
         await self.session.save()
 
@@ -487,7 +483,6 @@ class TelegramBaseClient(abc.ABC):
         # when needed by ._get_dc, and also it's static so it's likely
         # set already. Avoid invoking non-CDN methods by not syncing updates.
         client.connect(_sync_updates=False)
-        client._authorized = self._authorized
         return client
 
     # endregion