diff --git a/lib/providers/content/call.dart b/lib/providers/content/call.dart
index 9f9b6da..a78841c 100644
--- a/lib/providers/content/call.dart
+++ b/lib/providers/content/call.dart
@@ -31,8 +31,6 @@ class ChatCallProvider extends GetxController {
   Rx<MediaDevice?> videoDevice = Rx(null);
   Rx<MediaDevice?> audioDevice = Rx(null);
 
-  final VideoParameters videoParameters = VideoParametersPresets.h720_169;
-
   late Room room;
   late EventsListener<RoomEvent> listener;
 
@@ -105,29 +103,27 @@ class ChatCallProvider extends GetxController {
       await room.connect(
         url,
         token,
-        roomOptions: RoomOptions(
+        roomOptions: const RoomOptions(
           dynacast: true,
           adaptiveStream: true,
-          defaultAudioPublishOptions: const AudioPublishOptions(
+          defaultAudioPublishOptions: AudioPublishOptions(
             name: 'call_voice',
             stream: 'call_stream',
           ),
-          defaultVideoPublishOptions: const VideoPublishOptions(
+          defaultVideoPublishOptions: VideoPublishOptions(
             name: 'call_video',
             stream: 'call_stream',
             simulcast: true,
             backupVideoCodec: BackupVideoCodec(enabled: true),
           ),
-          defaultScreenShareCaptureOptions: const ScreenShareCaptureOptions(
+          defaultScreenShareCaptureOptions: ScreenShareCaptureOptions(
             useiOSBroadcastExtension: true,
-            params: VideoParameters(
-              dimensions: VideoDimensionsPresets.h1080_169,
-              encoding:
-                  VideoEncoding(maxBitrate: 3 * 1000 * 1000, maxFramerate: 30),
-            ),
+            params: VideoParametersPresets.screenShareH1080FPS30,
+          ),
+          defaultCameraCaptureOptions: CameraCaptureOptions(
+            maxFrameRate: 30,
+            params: VideoParametersPresets.h1080_169,
           ),
-          defaultCameraCaptureOptions:
-              CameraCaptureOptions(maxFrameRate: 30, params: videoParameters),
         ),
         fastConnectOptions: FastConnectOptions(
           microphone: TrackOption(track: audioTrack.value),
@@ -334,7 +330,7 @@ class ChatCallProvider extends GetxController {
       videoTrack.value = await LocalVideoTrack.createCameraTrack(
         CameraCaptureOptions(
           deviceId: videoDevice.value!.deviceId,
-          params: videoParameters,
+          params: VideoParametersPresets.h1080_169,
         ),
       );
       await videoTrack.value!.start();
diff --git a/lib/providers/content/channel.dart b/lib/providers/content/channel.dart
index ce96d77..b99546c 100644
--- a/lib/providers/content/channel.dart
+++ b/lib/providers/content/channel.dart
@@ -19,6 +19,20 @@ class ChannelProvider extends GetxController {
     return resp;
   }
 
+  Future<Response> getMyChannelProfile(String alias, {String realm = 'global'}) async {
+    final AuthProvider auth = Get.find();
+    if (!await auth.isAuthorized) throw Exception('unauthorized');
+
+    final client = auth.configureClient(service: 'messaging');
+
+    final resp = await client.get('/api/channels/$realm/$alias/me');
+    if (resp.statusCode != 200) {
+      throw Exception(resp.bodyString);
+    }
+
+    return resp;
+  }
+
   Future<Response?> getChannelOngoingCall(String alias,
       {String realm = 'global'}) async {
     final AuthProvider auth = Get.find();
diff --git a/lib/router.dart b/lib/router.dart
index 0af4ad8..56f66ef 100644
--- a/lib/router.dart
+++ b/lib/router.dart
@@ -1,5 +1,4 @@
 import 'package:go_router/go_router.dart';
-import 'package:solian/models/channel.dart';
 import 'package:solian/models/realm.dart';
 import 'package:solian/screens/about.dart';
 import 'package:solian/screens/account.dart';
@@ -102,10 +101,14 @@ abstract class AppRouter {
           GoRoute(
             path: '/chat/:alias/detail',
             name: 'channelDetail',
-            builder: (context, state) => ChannelDetailScreen(
-              channel: state.extra as Channel,
-              realm: state.uri.queryParameters['realm'] ?? 'global',
-            ),
+            builder: (context, state) {
+              final arguments = state.extra as ChannelDetailArguments;
+              return ChannelDetailScreen(
+                channel: arguments.channel,
+                profile: arguments.profile,
+                realm: state.uri.queryParameters['realm'] ?? 'global',
+              );
+            },
           ),
         ],
       ),
diff --git a/lib/screens/account/notification.dart b/lib/screens/account/notification.dart
index ad04e25..4700f9a 100644
--- a/lib/screens/account/notification.dart
+++ b/lib/screens/account/notification.dart
@@ -33,7 +33,6 @@ class _NotificationScreenState extends State<NotificationScreen> {
 
     if (markList.isNotEmpty) {
       final client = auth.configureClient(service: 'passport');
-
       await client.put('/api/notifications/batch/read', {'messages': markList});
     }
 
@@ -129,6 +128,7 @@ class _NotificationScreenState extends State<NotificationScreen> {
                           ),
                           title: Text(element.subject),
                           subtitle: Column(
+                            crossAxisAlignment: CrossAxisAlignment.start,
                             children: [
                               Text(element.content),
                               if (element.links != null)
diff --git a/lib/screens/auth/signin.dart b/lib/screens/auth/signin.dart
index 46c6f05..a3aa1e6 100644
--- a/lib/screens/auth/signin.dart
+++ b/lib/screens/auth/signin.dart
@@ -25,6 +25,7 @@ class _SignInPopupState extends State<SignInPopup> {
     if (username.isEmpty || password.isEmpty) return;
     provider.signin(context, username, password).then((_) async {
       await showDialog(
+        useRootNavigator: true,
         context: context,
         builder: (context) => const PushNotifyRegisterDialog(),
       );
diff --git a/lib/screens/channel/call/call.dart b/lib/screens/channel/call/call.dart
index 9d632d4..50432a8 100644
--- a/lib/screens/channel/call/call.dart
+++ b/lib/screens/channel/call/call.dart
@@ -55,6 +55,7 @@ class _CallScreenState extends State<CallScreen> {
       color: Theme.of(context).colorScheme.surface,
       child: Scaffold(
         appBar: AppBar(
+          centerTitle: true,
           title: RichText(
             textAlign: TextAlign.center,
             text: TextSpan(children: [
diff --git a/lib/screens/channel/channel_chat.dart b/lib/screens/channel/channel_chat.dart
index c822ba7..cdc24dc 100644
--- a/lib/screens/channel/channel_chat.dart
+++ b/lib/screens/channel/channel_chat.dart
@@ -15,6 +15,7 @@ import 'package:solian/providers/chat.dart';
 import 'package:solian/providers/content/call.dart';
 import 'package:solian/providers/content/channel.dart';
 import 'package:solian/router.dart';
+import 'package:solian/screens/channel/channel_detail.dart';
 import 'package:solian/theme.dart';
 import 'package:solian/widgets/chat/call/call_prejoin.dart';
 import 'package:solian/widgets/chat/call/chat_call_action.dart';
@@ -44,6 +45,7 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
   String? _overrideAlias;
 
   Channel? _channel;
+  ChannelMember? _channelProfile;
   Call? _ongoingCall;
   StreamSubscription<NetworkPackage>? _subscription;
 
@@ -61,16 +63,21 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
 
     setState(() => _isBusy = true);
 
-    if (overrideAlias != null) {
-      _overrideAlias = overrideAlias;
-    }
+    if (overrideAlias != null) _overrideAlias = overrideAlias;
 
     try {
       final resp = await provider.getChannel(
         _overrideAlias ?? widget.alias,
         realm: widget.realm,
       );
-      setState(() => _channel = Channel.fromJson(resp.body));
+      final respProfile = await provider.getMyChannelProfile(
+        _overrideAlias ?? widget.alias,
+        realm: widget.realm,
+      );
+      setState(() {
+        _channel = Channel.fromJson(resp.body);
+        _channelProfile = ChannelMember.fromJson(respProfile.body);
+      });
     } catch (e) {
       context.showErrorDialog(e);
     }
@@ -192,7 +199,7 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
   Message? _messageToReplying;
   Message? _messageToEditing;
 
-  Widget buildHistory(context, item, index) {
+  Widget buildHistory(context, Message item, index) {
     bool isMerged = false, hasMerged = false;
     if (index > 0) {
       hasMerged = checkMessageMergeable(
@@ -212,8 +219,8 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
       content = Column(
         children: [
           ChatMessage(
-            key: Key('m${item.replyTo.uuid}'),
-            item: item.replyTo,
+            key: Key('m${item.replyTo!.uuid}'),
+            item: item.replyTo!,
             isReply: true,
           ).paddingOnly(left: 24, right: 4, bottom: 2),
           ChatMessage(
@@ -273,8 +280,11 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
   @override
   Widget build(BuildContext context) {
     if (_isBusy || _channel == null) {
-      return const Center(
-        child: CircularProgressIndicator(),
+      return Material(
+        color: Theme.of(context).colorScheme.surface,
+        child: const Center(
+          child: CircularProgressIndicator(),
+        ),
       );
     }
 
@@ -315,7 +325,10 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
                 'channelDetail',
                 pathParameters: {'alias': widget.alias},
                 queryParameters: {'realm': widget.realm},
-                extra: _channel,
+                extra: ChannelDetailArguments(
+                  profile: _channelProfile!,
+                  channel: _channel!,
+                ),
               )
                   .then((value) {
                 if (value == false) AppRouter.instance.pop();
diff --git a/lib/screens/channel/channel_detail.dart b/lib/screens/channel/channel_detail.dart
index 525d7ed..0268396 100644
--- a/lib/screens/channel/channel_detail.dart
+++ b/lib/screens/channel/channel_detail.dart
@@ -1,6 +1,8 @@
+import 'package:dropdown_button2/dropdown_button2.dart';
 import 'package:flutter/material.dart';
 import 'package:font_awesome_flutter/font_awesome_flutter.dart';
 import 'package:get/get.dart';
+import 'package:solian/exts.dart';
 import 'package:solian/models/channel.dart';
 import 'package:solian/providers/auth.dart';
 import 'package:solian/router.dart';
@@ -8,14 +10,23 @@ import 'package:solian/screens/channel/channel_organize.dart';
 import 'package:solian/widgets/channel/channel_deletion.dart';
 import 'package:solian/widgets/channel/channel_member.dart';
 
+class ChannelDetailArguments {
+  final Channel channel;
+  final ChannelMember profile;
+
+  ChannelDetailArguments({required this.channel, required this.profile});
+}
+
 class ChannelDetailScreen extends StatefulWidget {
   final String realm;
   final Channel channel;
+  final ChannelMember profile;
 
   const ChannelDetailScreen({
     super.key,
     required this.channel,
     required this.realm,
+    required this.profile,
   });
 
   @override
@@ -23,7 +34,10 @@ class ChannelDetailScreen extends StatefulWidget {
 }
 
 class _ChannelDetailScreenState extends State<ChannelDetailScreen> {
+  bool _isBusy = false;
+
   bool _isOwned = false;
+  int _notifyLevel = 0;
 
   void checkOwner() async {
     final AuthProvider auth = Get.find();
@@ -59,15 +73,43 @@ class _ChannelDetailScreenState extends State<ChannelDetailScreen> {
     }
   }
 
+  void applyProfileChanges() async {
+    final AuthProvider auth = Get.find();
+    if (!await auth.isAuthorized) return;
+
+    setState(() => _isBusy = true);
+
+    final client = auth.configureClient(service: 'messaging');
+
+    final resp = await client
+        .put('/api/channels/${widget.realm}/${widget.channel.alias}/members/me', {
+      'nick': null,
+      'notify_level': _notifyLevel,
+    });
+    if (resp.statusCode != 200) {
+      context.showErrorDialog(resp.bodyString);
+    } else {
+      context.showSnackbar('channelNotifyLevelApplied'.tr);
+    }
+
+    setState(() => _isBusy = false);
+  }
+
   @override
   void initState() {
+    _notifyLevel = widget.profile.notify;
     super.initState();
-
     checkOwner();
   }
 
   @override
   Widget build(BuildContext context) {
+    final notifyTypes = {
+      0: 'channelNotifyLevelAll'.tr,
+      1: 'channelNotifyLevelMentioned'.tr,
+      2: 'channelNotifyLevelNone'.tr,
+    };
+
     final ownerActions = [
       ListTile(
         leading: const Icon(Icons.edit),
@@ -127,9 +169,38 @@ class _ChannelDetailScreenState extends State<ChannelDetailScreen> {
           child: ListView(
             children: [
               ListTile(
-                leading: const Icon(Icons.settings),
-                trailing: const Icon(Icons.chevron_right),
-                title: Text('channelSettings'.tr.capitalize!),
+                leading: const Icon(Icons.notifications_active),
+                title: Text('channelNotifyLevel'.tr.capitalize!),
+                trailing: DropdownButtonHideUnderline(
+                  child: DropdownButton2<int>(
+                    isExpanded: true,
+                    items: notifyTypes.entries
+                        .map((item) => DropdownMenuItem<int>(
+                      enabled: !_isBusy,
+                              value: item.key,
+                              child: Text(
+                                item.value,
+                                style: const TextStyle(
+                                  fontSize: 14,
+                                ),
+                              ),
+                            ))
+                        .toList(),
+                    value: _notifyLevel,
+                    onChanged: (int? value) {
+                      setState(() => _notifyLevel = value ?? 0);
+                      applyProfileChanges();
+                    },
+                    buttonStyleData: const ButtonStyleData(
+                      padding: EdgeInsets.only(left: 16, right: 1),
+                      height: 40,
+                      width: 140,
+                    ),
+                    menuItemStyleData: const MenuItemStyleData(
+                      height: 40,
+                    ),
+                  ),
+                ),
               ),
               ListTile(
                 leading: const Icon(Icons.supervisor_account),
diff --git a/lib/translations.dart b/lib/translations.dart
index 8f391a7..2494685 100644
--- a/lib/translations.dart
+++ b/lib/translations.dart
@@ -119,6 +119,9 @@ class SolianMessages extends Translations {
           'realmAdjust': 'Realm adjustment',
           'realmSettings': 'Realm settings',
           'realmEditingNotify': 'You\'re editing realm @realm',
+          'realmLeaveConfirm': 'Confirm realm quit',
+          'realmLeaveConfirmCaption':
+              'Are you sure you want leave realm @realm? Your content published in this realm will not be deleted.',
           'realmDeletionConfirm': 'Confirm realm deletion',
           'realmDeletionConfirmCaption':
               'Are you sure to delete realm @realm? This action cannot be undone!',
@@ -145,11 +148,19 @@ class SolianMessages extends Translations {
           'channelAdjust': 'Channel adjustment',
           'channelDetail': 'Channel detail',
           'channelSettings': 'Channel settings',
+          'channelLeaveConfirm': 'Confirm channel quit',
+          'channelLeaveConfirmCaption':
+              'Are you sure to leave channel @channel? All your messages will be deleted!',
           'channelDeletionConfirm': 'Confirm channel deletion',
           'channelDeletionConfirmCaption':
               'Are you sure to delete channel @channel? This action cannot be undone!',
           'channelCategoryDirect': 'DM',
           'channelCategoryDirectHint': 'Your direct messages',
+          'channelNotifyLevel': 'Notify level',
+          'channelNotifyLevelAll': 'All',
+          'channelNotifyLevelMentioned': 'Only mentioned',
+          'channelNotifyLevelNone': 'Ignore all',
+          'channelNotifyLevelApplied': 'Your notification settings has been applied.',
           'messageDecoding': 'Decoding...',
           'messageDecodeFailed': 'Unable to decode: @message',
           'messageInputPlaceholder': 'Message @channel',
@@ -309,6 +320,8 @@ class SolianMessages extends Translations {
           'realmAdjust': '调整领域',
           'realmSettings': '领域设置',
           'realmEditingNotify': '你正在编辑领域 @realm',
+          'realmLeaveConfirm': '确认离开领域',
+          'realmLeaveConfirmCaption': '你确认要离开领域 @realm 吗？你在该领域发表的内容不会被删除。',
           'realmDeletionConfirm': '确认删除领域',
           'realmDeletionConfirmCaption': '你确定要删除领域 @realm 嘛？该操作不可撤销。',
           'channelNew': '创建新频道',
@@ -334,10 +347,17 @@ class SolianMessages extends Translations {
           'channelAdjust': '调整频道',
           'channelDetail': '频道详情',
           'channelSettings': '频道设置',
+          'channelLeaveConfirm': '确认离开频道',
+          'channelLeaveConfirmCaption': '你确认要离开频道 @channel 吗？你在这个频道的消息将被删除。',
           'channelDeletionConfirm': '确认删除频道',
           'channelDeletionConfirmCaption': '你确认要删除频道 @channel 吗？该操作不可撤销。',
           'channelCategoryDirect': '私聊频道',
           'channelCategoryDirectHint': '你的所有私聊频道',
+          'channelNotifyLevel': '通知等级',
+          'channelNotifyLevelAll': '全部通知',
+          'channelNotifyLevelMentioned': '仅提及',
+          'channelNotifyLevelNone': '忽略一切',
+          'channelNotifyLevelApplied': '你的通知设置已经应用。',
           'messageDecoding': '解码信息中…',
           'messageDecodeFailed': '解码信息失败：@message',
           'messageInputPlaceholder': '在 @channel 发信息',
diff --git a/lib/widgets/channel/channel_deletion.dart b/lib/widgets/channel/channel_deletion.dart
index 2617325..7235e35 100644
--- a/lib/widgets/channel/channel_deletion.dart
+++ b/lib/widgets/channel/channel_deletion.dart
@@ -65,9 +65,14 @@ class _ChannelDeletionDialogState extends State<ChannelDeletionDialog> {
   @override
   Widget build(BuildContext context) {
     return AlertDialog(
-      title: Text('channelDeletionConfirm'.tr),
+      title: Text(widget.isOwned
+          ? 'channelDeletionConfirm'.tr
+          : 'channelLeaveConfirm'.tr),
       content: Text(
+        widget.isOwned ?
         'channelDeletionConfirmCaption'
+            .trParams({'channel': '#${widget.channel.alias}'}) :
+        'channelLeaveConfirmCaption'
             .trParams({'channel': '#${widget.channel.alias}'}),
       ),
       actions: <Widget>[
diff --git a/lib/widgets/chat/chat_message_input.dart b/lib/widgets/chat/chat_message_input.dart
index 468517f..4b8efc5 100644
--- a/lib/widgets/chat/chat_message_input.dart
+++ b/lib/widgets/chat/chat_message_input.dart
@@ -113,7 +113,7 @@ class _ChatMessageInputState extends State<ChatMessageInput> {
     Response resp;
     if (_editTo != null) {
       resp = await client.put(
-        '/api/channels/${widget.realm}/${widget.channel.alias}/messages/${widget.edit!.id}',
+        '/api/channels/${widget.realm}/${widget.channel.alias}/messages/${_editTo!.id}',
         payload,
       );
     } else {
@@ -171,6 +171,11 @@ class _ChatMessageInputState extends State<ChatMessageInput> {
           MaterialBanner(
             leading: const FaIcon(FontAwesomeIcons.reply, size: 18),
             dividerColor: Colors.transparent,
+            padding: const EdgeInsets.only(left: 20),
+            backgroundColor: Theme.of(context)
+                .colorScheme
+                .surfaceContainerHighest
+                .withOpacity(0.5),
             content: ChatMessage(
               item: _replyTo!,
               isContentPreviewing: true,
@@ -181,6 +186,11 @@ class _ChatMessageInputState extends State<ChatMessageInput> {
           MaterialBanner(
             leading: const Icon(Icons.edit),
             dividerColor: Colors.transparent,
+            padding: const EdgeInsets.only(left: 20),
+            backgroundColor: Theme.of(context)
+                .colorScheme
+                .surfaceContainerHighest
+                .withOpacity(0.5),
             content: ChatMessage(
               item: _editTo!,
               isContentPreviewing: true,
diff --git a/lib/widgets/realms/realm_deletion.dart b/lib/widgets/realms/realm_deletion.dart
index 13016f2..becae65 100644
--- a/lib/widgets/realms/realm_deletion.dart
+++ b/lib/widgets/realms/realm_deletion.dart
@@ -61,10 +61,15 @@ class _RealmDeletionDialogState extends State<RealmDeletionDialog> {
   @override
   Widget build(BuildContext context) {
     return AlertDialog(
-      title: Text('realmDeletionConfirm'.tr),
+      title: Text(widget.isOwned
+          ? 'realmDeletionConfirm'.tr
+          : 'channelLeaveConfirm'.tr),
       content: Text(
-        'realmDeletionConfirmCaption'
-            .trParams({'realm': '#${widget.realm.alias}'}),
+        widget.isOwned
+            ? 'realmDeletionConfirmCaption'
+                .trParams({'realm': '#${widget.realm.alias}'})
+            : 'realmLeaveConfirmCaption'
+                .trParams({'realm': '#${widget.realm.alias}'}),
       ),
       actions: <Widget>[
         TextButton(