diff --git a/app/components/chat-list.tsx b/app/components/chat-list.tsx
index 7ba55585..f76b369f 100644
--- a/app/components/chat-list.tsx
+++ b/app/components/chat-list.tsx
@@ -18,6 +18,7 @@ import { MaskAvatar } from "./mask";
 import { Mask } from "../store/mask";
 import { useRef, useEffect } from "react";
 import { showConfirm } from "./ui-lib";
+import { useMobileScreen } from "../utils";
 
 export function ChatItem(props: {
   onClick?: () => void;
@@ -80,7 +81,11 @@ export function ChatItem(props: {
 
           <div
             className={styles["chat-item-delete"]}
-            onClickCapture={props.onDelete}
+            onClickCapture={(e) => {
+              props.onDelete?.();
+              e.preventDefault();
+              e.stopPropagation();
+            }}
           >
             <DeleteIcon />
           </div>
@@ -101,6 +106,7 @@ export function ChatList(props: { narrow?: boolean }) {
   );
   const chatStore = useChatStore();
   const navigate = useNavigate();
+  const isMobileScreen = useMobileScreen();
 
   const onDragEnd: OnDragEndResponder = (result) => {
     const { destination, source } = result;
@@ -142,7 +148,7 @@ export function ChatList(props: { narrow?: boolean }) {
                 }}
                 onDelete={async () => {
                   if (
-                    !props.narrow ||
+                    (!props.narrow && !isMobileScreen) ||
                     (await showConfirm(Locale.Home.DeleteChat))
                   ) {
                     chatStore.deleteSession(i);
diff --git a/app/components/sidebar.tsx b/app/components/sidebar.tsx
index 85af3ed2..beeee865 100644
--- a/app/components/sidebar.tsx
+++ b/app/components/sidebar.tsx
@@ -1,4 +1,4 @@
-import { useEffect, useRef, useCallback, useMemo } from "react";
+import { useEffect, useRef, useMemo } from "react";
 
 import styles from "./home.module.scss";
 
@@ -8,6 +8,7 @@ import GithubIcon from "../icons/github.svg";
 import ChatGptIcon from "../icons/chatgpt.svg";
 import AddIcon from "../icons/add.svg";
 import CloseIcon from "../icons/close.svg";
+import DeleteIcon from "../icons/delete.svg";
 import MaskIcon from "../icons/mask.svg";
 import PluginIcon from "../icons/plugin.svg";
 import DragIcon from "../icons/drag.svg";
@@ -202,7 +203,7 @@ export function SideBar(props: { className?: string }) {
         <div className={styles["sidebar-actions"]}>
           <div className={styles["sidebar-action"] + " " + styles.mobile}>
             <IconButton
-              icon={<CloseIcon />}
+              icon={<DeleteIcon />}
               onClick={async () => {
                 if (await showConfirm(Locale.Home.DeleteChat)) {
                   chatStore.deleteSession(chatStore.currentSessionIndex);
diff --git a/app/store/chat.ts b/app/store/chat.ts
index 95822c19..ff7eb51b 100644
--- a/app/store/chat.ts
+++ b/app/store/chat.ts
@@ -85,33 +85,6 @@ function getSummarizeModel(currentModel: string) {
   return currentModel.startsWith("gpt") ? SUMMARIZE_MODEL : currentModel;
 }
 
-interface ChatStore {
-  sessions: ChatSession[];
-  currentSessionIndex: number;
-  clearSessions: () => void;
-  moveSession: (from: number, to: number) => void;
-  selectSession: (index: number) => void;
-  newSession: (mask?: Mask) => void;
-  deleteSession: (index: number) => void;
-  currentSession: () => ChatSession;
-  nextSession: (delta: number) => void;
-  onNewMessage: (message: ChatMessage) => void;
-  onUserInput: (content: string) => Promise<void>;
-  summarizeSession: () => void;
-  updateStat: (message: ChatMessage) => void;
-  updateCurrentSession: (updater: (session: ChatSession) => void) => void;
-  updateMessage: (
-    sessionIndex: number,
-    messageIndex: number,
-    updater: (message?: ChatMessage) => void,
-  ) => void;
-  resetSession: () => void;
-  getMessagesWithMemory: () => ChatMessage[];
-  getMemoryPrompt: () => ChatMessage;
-
-  clearAllData: () => void;
-}
-
 function countMessages(msgs: ChatMessage[]) {
   return msgs.reduce((pre, cur) => pre + estimateTokenLength(cur.content), 0);
 }