diff --git a/packages/ui/package.json b/packages/ui/package.json
index 139e48249..e241b6444 100644
--- a/packages/ui/package.json
+++ b/packages/ui/package.json
@@ -62,7 +62,6 @@
     "react-dom": "^18.0.0",
     "react-i18next": "^11.18.3",
     "react-modal": "^3.15.1",
-    "react-modal-promise": "^1.0.2",
     "react-router-dom": "^6.2.2",
     "react-string-replace": "^1.0.0",
     "react-timer-hook": "^3.0.5",
diff --git a/packages/ui/src/components/ConfirmModal/IframeConfirmModal.module.scss b/packages/ui/src/components/ConfirmModal/IframeConfirmModal.module.scss
deleted file mode 100644
index 8a1072fa0..000000000
--- a/packages/ui/src/components/ConfirmModal/IframeConfirmModal.module.scss
+++ /dev/null
@@ -1,51 +0,0 @@
-@use '@/scss/underscore' as _;
-
-.overlay {
-  z-index: 100;
-}
-
-.modal {
-  position: absolute;
-  left: 20px;
-  right: 20px;
-  top: 40px;
-  bottom: 40px;
-  outline: none;
-}
-
-.container {
-  background: var(--color-dialogue);
-  border-radius: 12px;
-  width: 100%;
-  height: 100%;
-  @include _.flex_column(stretch, center);
-}
-
-.content {
-  padding: _.unit(5);
-  flex: 1;
-  @include _.flex_column;
-}
-
-iframe {
-  display: block;
-
-  &.hidden {
-    display: none;
-  }
-}
-
-
-.footer {
-  border-top: 1px solid var(--color-divider);
-  @include _.flex_row;
-  padding: _.unit(5);
-
-  > * {
-    flex: 1;
-  }
-
-  > button:first-child {
-    margin-right: _.unit(2);
-  }
-}
diff --git a/packages/ui/src/components/ConfirmModal/IframeConfirmModal.tsx b/packages/ui/src/components/ConfirmModal/IframeConfirmModal.tsx
deleted file mode 100644
index 22ad550cc..000000000
--- a/packages/ui/src/components/ConfirmModal/IframeConfirmModal.tsx
+++ /dev/null
@@ -1,63 +0,0 @@
-import classNames from 'classnames';
-import { useState } from 'react';
-import ReactModal from 'react-modal';
-
-import Button from '@/components/Button';
-import { LoadingIcon } from '@/components/LoadingLayer';
-
-import * as modalStyles from '../../scss/modal.module.scss';
-import * as styles from './IframeConfirmModal.module.scss';
-import { ModalProps } from './type';
-
-type Props = { url: string } & Omit<ModalProps, 'children'>;
-
-const IframeConfirmModal = ({
-  className,
-  isOpen = false,
-  url,
-  cancelText = 'action.cancel',
-  confirmText = 'action.confirm',
-  onConfirm,
-  onClose,
-}: Props) => {
-  const [isLoading, setIsLoading] = useState(true);
-
-  return (
-    <ReactModal
-      role="dialog"
-      isOpen={isOpen}
-      className={classNames(styles.modal, className)}
-      overlayClassName={classNames(modalStyles.overlay, styles.overlay)}
-    >
-      <div className={styles.container}>
-        <div className={styles.content}>
-          {isLoading && <LoadingIcon />}
-          <iframe
-            sandbox={undefined}
-            className={isLoading ? styles.hidden : undefined}
-            // For styling use
-            // eslint-disable-next-line jsx-a11y/aria-role
-            role="iframe"
-            src={url}
-            title="terms"
-            frameBorder="0"
-            width="100%"
-            height="100%"
-            onLoad={() => {
-              setIsLoading(false);
-            }}
-            onError={() => {
-              setIsLoading(false);
-            }}
-          />
-        </div>
-        <div className={styles.footer}>
-          <Button title={cancelText} type="secondary" onClick={onClose} />
-          <Button title={confirmText} onClick={onConfirm ?? onClose} />
-        </div>
-      </div>
-    </ReactModal>
-  );
-};
-
-export default IframeConfirmModal;
diff --git a/packages/ui/src/components/ConfirmModal/MobileModal.module.scss b/packages/ui/src/components/ConfirmModal/MobileModal.module.scss
index af294a517..328f660fa 100644
--- a/packages/ui/src/components/ConfirmModal/MobileModal.module.scss
+++ b/packages/ui/src/components/ConfirmModal/MobileModal.module.scss
@@ -37,3 +37,29 @@
     margin-right: _.unit(2);
   }
 }
+
+.iframeModal {
+  top: 40px;
+  bottom: 40px;
+  transform: none;
+
+  .container {
+    padding: 0;
+    border-radius: 12px;
+    width: 100%;
+    height: 100%;
+    @include _.flex_column(stretch, center);
+  }
+
+  .content {
+    padding: _.unit(5);
+    flex: 1;
+    @include _.flex_column;
+  }
+
+  .footer {
+    margin-top: 0;
+    border-top: 1px solid var(--color-divider);
+    padding: _.unit(5);
+  }
+}
diff --git a/packages/ui/src/components/ConfirmModal/index.tsx b/packages/ui/src/components/ConfirmModal/index.tsx
index e9b809561..904135078 100644
--- a/packages/ui/src/components/ConfirmModal/index.tsx
+++ b/packages/ui/src/components/ConfirmModal/index.tsx
@@ -1,6 +1,4 @@
 export { default as WebModal } from './AcModal';
 export { default as MobileModal } from './MobileModal';
-export { default as IframeModal } from './IframeConfirmModal';
-export { modalPromisify } from './modalPromisify';
 
 export type { ModalProps } from './type';
diff --git a/packages/ui/src/components/ConfirmModal/modalPromisify/index.test.tsx b/packages/ui/src/components/ConfirmModal/modalPromisify/index.test.tsx
deleted file mode 100644
index f2bfcd54e..000000000
--- a/packages/ui/src/components/ConfirmModal/modalPromisify/index.test.tsx
+++ /dev/null
@@ -1,37 +0,0 @@
-import { fireEvent } from '@testing-library/react';
-
-import renderWithPageContext from '@/__mocks__/RenderWithPageContext';
-import TermsOfUseConfirmModal from '@/containers/TermsOfUse/TermsOfUseConfirmModal';
-
-import { modalPromisify } from '.';
-
-describe('modalPromisify', () => {
-  const onResolve = jest.fn();
-  const onReject = jest.fn();
-
-  it('resolve properly', () => {
-    const PromisifyModal = modalPromisify(TermsOfUseConfirmModal);
-
-    const { getByText } = renderWithPageContext(
-      <PromisifyModal isOpen instanceId="foo" onResolve={onResolve} onReject={onReject} />
-    );
-
-    const confirmButton = getByText('action.agree');
-    fireEvent.click(confirmButton);
-
-    expect(onResolve).toBeCalled();
-  });
-
-  it('reject', () => {
-    const PromisifyModal = modalPromisify(TermsOfUseConfirmModal);
-
-    const { getByText } = renderWithPageContext(
-      <PromisifyModal isOpen instanceId="foo" onResolve={onResolve} onReject={onReject} />
-    );
-
-    const cancelButton = getByText('action.cancel');
-    fireEvent.click(cancelButton);
-
-    expect(onReject).toBeCalled();
-  });
-});
diff --git a/packages/ui/src/components/ConfirmModal/modalPromisify/index.tsx b/packages/ui/src/components/ConfirmModal/modalPromisify/index.tsx
deleted file mode 100644
index 8866433de..000000000
--- a/packages/ui/src/components/ConfirmModal/modalPromisify/index.tsx
+++ /dev/null
@@ -1,29 +0,0 @@
-import { InstanceProps } from 'react-modal-promise';
-
-import { ConfirmModalMessage } from '@/types';
-
-type Props = {
-  isOpen?: boolean;
-  onConfirm: () => void;
-  onClose: (message?: ConfirmModalMessage) => void;
-};
-
-export const modalPromisify =
-  (ConfirmModal: (props: Props) => JSX.Element) =>
-  ({
-    isOpen,
-    onResolve,
-    onReject,
-  }: Omit<InstanceProps<boolean | ConfirmModalMessage>, 'open' | 'close'>) => {
-    return (
-      <ConfirmModal
-        isOpen={isOpen}
-        onConfirm={() => {
-          onResolve(true);
-        }}
-        onClose={(message?: ConfirmModalMessage) => {
-          onReject(message ?? false);
-        }}
-      />
-    );
-  };
diff --git a/packages/ui/src/containers/ConfirmModalProvider/index.tsx b/packages/ui/src/containers/ConfirmModalProvider/index.tsx
index 1e38bf8e2..f3683efe1 100644
--- a/packages/ui/src/containers/ConfirmModalProvider/index.tsx
+++ b/packages/ui/src/containers/ConfirmModalProvider/index.tsx
@@ -4,7 +4,7 @@ import { useState, useRef, useMemo, createContext, useCallback } from 'react';
 import { WebModal, MobileModal, ModalProps } from '@/components/ConfirmModal';
 import usePlatform from '@/hooks/use-platform';
 
-export type ChildRenderProps = {
+export type ModalContentRenderProps = {
   confirm: (data?: unknown) => void;
   cancel: (data?: unknown) => void;
 };
@@ -12,7 +12,7 @@ export type ChildRenderProps = {
 type ConfirmModalType = 'alert' | 'confirm';
 
 type ConfirmModalState = Omit<ModalProps, 'onClose' | 'onConfirm' | 'children'> & {
-  ModalContent: string | ((props: ChildRenderProps) => Nullable<JSX.Element>);
+  ModalContent: string | ((props: ModalContentRenderProps) => Nullable<JSX.Element>);
   type: ConfirmModalType;
 };
 
diff --git a/packages/ui/src/containers/TermsOfUse/IframeConfirmModalContent/index.module.scss b/packages/ui/src/containers/TermsOfUse/IframeConfirmModalContent/index.module.scss
new file mode 100644
index 000000000..ee6993d5a
--- /dev/null
+++ b/packages/ui/src/containers/TermsOfUse/IframeConfirmModalContent/index.module.scss
@@ -0,0 +1,7 @@
+.hidden {
+  display: none;
+}
+
+.iframe {
+  display: block;
+}
diff --git a/packages/ui/src/containers/TermsOfUse/IframeConfirmModalContent/index.tsx b/packages/ui/src/containers/TermsOfUse/IframeConfirmModalContent/index.tsx
new file mode 100644
index 000000000..fe4d49f51
--- /dev/null
+++ b/packages/ui/src/containers/TermsOfUse/IframeConfirmModalContent/index.tsx
@@ -0,0 +1,39 @@
+import { useState } from 'react';
+
+import { LoadingIcon } from '@/components/LoadingLayer';
+
+import * as styles from './index.module.scss';
+
+type Props = { url?: string; title?: string };
+
+const IframeConfirmModalContent = ({ url, title }: Props) => {
+  const [isLoading, setIsLoading] = useState(true);
+
+  return (
+    <>
+      {isLoading && <LoadingIcon />}
+      <iframe
+        role="article"
+        sandbox={undefined}
+        className={isLoading ? styles.hidden : styles.iframe}
+        src={url}
+        title={title}
+        frameBorder="0"
+        width="100%"
+        height="100%"
+        onLoad={() => {
+          setIsLoading(false);
+        }}
+        onError={() => {
+          setIsLoading(false);
+        }}
+      />
+    </>
+  );
+};
+
+export default IframeConfirmModalContent;
+
+export const createIframeConfirmModalContent = (url?: string, title?: string) => (
+  <IframeConfirmModalContent url={url} title={title} />
+);
diff --git a/packages/ui/src/containers/TermsOfUse/TermsOfUseConfirmModal/index.test.tsx b/packages/ui/src/containers/TermsOfUse/TermsOfUseConfirmModal/index.test.tsx
deleted file mode 100644
index b062d3ff0..000000000
--- a/packages/ui/src/containers/TermsOfUse/TermsOfUseConfirmModal/index.test.tsx
+++ /dev/null
@@ -1,16 +0,0 @@
-import renderWithPageContext from '@/__mocks__/RenderWithPageContext';
-
-import TermsOfUseModal from '.';
-
-describe('TermsOfUseModal', () => {
-  const onConfirm = jest.fn();
-  const onCancel = jest.fn();
-
-  it('render properly', () => {
-    const { queryByText } = renderWithPageContext(
-      <TermsOfUseModal isOpen onConfirm={onConfirm} onClose={onCancel} />
-    );
-
-    expect(queryByText('description.agree_with_terms_modal')).not.toBeNull();
-  });
-});
diff --git a/packages/ui/src/containers/TermsOfUse/TermsOfUseConfirmModal/index.tsx b/packages/ui/src/containers/TermsOfUse/TermsOfUseConfirmModal/index.tsx
deleted file mode 100644
index 65ed8bb8c..000000000
--- a/packages/ui/src/containers/TermsOfUse/TermsOfUseConfirmModal/index.tsx
+++ /dev/null
@@ -1,67 +0,0 @@
-import { useContext } from 'react';
-import { useTranslation, Trans } from 'react-i18next';
-import { create } from 'react-modal-promise';
-
-import { WebModal, MobileModal, modalPromisify } from '@/components/ConfirmModal';
-import TextLink from '@/components/TextLink';
-import { PageContext } from '@/hooks/use-page-context';
-import usePlatform from '@/hooks/use-platform';
-import { ConfirmModalMessage } from '@/types';
-
-/**
- * For web use only confirm modal, does not contain Terms iframe
- */
-
-type Props = {
-  isOpen?: boolean;
-  onConfirm: () => void;
-  onClose: (message?: ConfirmModalMessage) => void;
-};
-
-const TermsOfUseConfirmModal = ({ isOpen = false, onConfirm, onClose }: Props) => {
-  const { t } = useTranslation();
-  const { isMobile } = usePlatform();
-  const { setTermsAgreement, experienceSettings } = useContext(PageContext);
-  const { termsOfUse } = experienceSettings ?? {};
-
-  const ConfirmModal = isMobile ? MobileModal : WebModal;
-
-  const terms = t('description.terms_of_use');
-
-  const linkProps = isMobile
-    ? {
-        onClick: () => {
-          onClose(ConfirmModalMessage.SHOW_TERMS_DETAIL_MODAL);
-        },
-      }
-    : {
-        href: termsOfUse?.contentUrl,
-        target: '_blank',
-      };
-
-  return (
-    <ConfirmModal
-      isOpen={isOpen}
-      confirmText="action.agree"
-      onConfirm={() => {
-        setTermsAgreement(true);
-        onConfirm();
-      }}
-      onClose={() => {
-        onClose();
-      }}
-    >
-      <Trans
-        components={{
-          link: <TextLink key={terms} text="description.terms_of_use" {...linkProps} />,
-        }}
-      >
-        {t('description.agree_with_terms_modal')}
-      </Trans>
-    </ConfirmModal>
-  );
-};
-
-export default TermsOfUseConfirmModal;
-
-export const termsOfUseConfirmModalPromise = create(modalPromisify(TermsOfUseConfirmModal));
diff --git a/packages/ui/src/containers/TermsOfUse/TermsOfUseConfirmModalContent/index.tsx b/packages/ui/src/containers/TermsOfUse/TermsOfUseConfirmModalContent/index.tsx
new file mode 100644
index 000000000..5ebefc27c
--- /dev/null
+++ b/packages/ui/src/containers/TermsOfUse/TermsOfUseConfirmModalContent/index.tsx
@@ -0,0 +1,45 @@
+import { useContext } from 'react';
+import { useTranslation, Trans } from 'react-i18next';
+
+import TextLink from '@/components/TextLink';
+import { ModalContentRenderProps } from '@/hooks/use-confirm-modal';
+import { PageContext } from '@/hooks/use-page-context';
+import usePlatform from '@/hooks/use-platform';
+import { ConfirmModalMessage } from '@/types';
+
+const TermsOfUseConfirmModalContent = ({ cancel }: ModalContentRenderProps) => {
+  const { experienceSettings } = useContext(PageContext);
+  const { termsOfUse } = experienceSettings ?? {};
+
+  const { t } = useTranslation();
+  const { isMobile } = usePlatform();
+
+  const linkProps = isMobile
+    ? {
+        onClick: () => {
+          cancel(ConfirmModalMessage.SHOW_TERMS_DETAIL_MODAL);
+        },
+      }
+    : {
+        href: termsOfUse?.contentUrl,
+        target: '_blank',
+      };
+
+  return (
+    <Trans
+      components={{
+        link: (
+          <TextLink
+            key={t('description.terms_of_use')}
+            text="description.terms_of_use"
+            {...linkProps}
+          />
+        ),
+      }}
+    >
+      {t('description.agree_with_terms_modal')}
+    </Trans>
+  );
+};
+
+export default TermsOfUseConfirmModalContent;
diff --git a/packages/ui/src/containers/TermsOfUse/TermsOfUseIframeModal/index.test.tsx b/packages/ui/src/containers/TermsOfUse/TermsOfUseIframeModal/index.test.tsx
deleted file mode 100644
index 9a3bc63ce..000000000
--- a/packages/ui/src/containers/TermsOfUse/TermsOfUseIframeModal/index.test.tsx
+++ /dev/null
@@ -1,36 +0,0 @@
-import { screen, fireEvent } from '@testing-library/react';
-
-import renderWithPageContext from '@/__mocks__/RenderWithPageContext';
-import SettingsProvider from '@/__mocks__/RenderWithPageContext/SettingsProvider';
-import { mockSignInExperienceSettings } from '@/__mocks__/logto';
-
-import TermsOfUseIframeModal from '.';
-
-describe('TermsOfUseModal', () => {
-  const onConfirm = jest.fn();
-  const onCancel = jest.fn();
-
-  it('render properly', () => {
-    const { queryByText, getByText } = renderWithPageContext(
-      <SettingsProvider>
-        <TermsOfUseIframeModal isOpen onConfirm={onConfirm} onClose={onCancel} />
-      </SettingsProvider>
-    );
-
-    expect(queryByText('action.agree')).not.toBeNull();
-
-    const iframe = screen.queryByRole('iframe');
-
-    expect(iframe).not.toBeNull();
-
-    if (iframe) {
-      expect(iframe).toHaveProperty('src', mockSignInExperienceSettings.termsOfUse.contentUrl);
-    }
-
-    const confirmButton = getByText('action.agree');
-
-    fireEvent.click(confirmButton);
-
-    expect(onConfirm).toBeCalled();
-  });
-});
diff --git a/packages/ui/src/containers/TermsOfUse/TermsOfUseIframeModal/index.tsx b/packages/ui/src/containers/TermsOfUse/TermsOfUseIframeModal/index.tsx
deleted file mode 100644
index f66068131..000000000
--- a/packages/ui/src/containers/TermsOfUse/TermsOfUseIframeModal/index.tsx
+++ /dev/null
@@ -1,36 +0,0 @@
-import { useContext } from 'react';
-import { create } from 'react-modal-promise';
-
-import { IframeModal, modalPromisify } from '@/components/ConfirmModal';
-import { PageContext } from '@/hooks/use-page-context';
-
-/**
- * For mobile use only, includes embedded Terms iframe
- */
-type Props = {
-  isOpen?: boolean;
-  onConfirm: () => void;
-  onClose: () => void;
-};
-
-const TermsOfUseIframeModal = ({ isOpen = false, onConfirm, onClose }: Props) => {
-  const { setTermsAgreement, experienceSettings } = useContext(PageContext);
-  const { termsOfUse } = experienceSettings ?? {};
-
-  return (
-    <IframeModal
-      isOpen={isOpen}
-      confirmText="action.agree"
-      url={termsOfUse?.contentUrl ?? ''}
-      onConfirm={() => {
-        setTermsAgreement(true);
-        onConfirm();
-      }}
-      onClose={onClose}
-    />
-  );
-};
-
-export default TermsOfUseIframeModal;
-
-export const termsOfUseIframeModalPromise = create(modalPromisify(TermsOfUseIframeModal));
diff --git a/packages/ui/src/containers/TermsOfUse/index.tsx b/packages/ui/src/containers/TermsOfUse/index.tsx
index 926382eee..82ac87227 100644
--- a/packages/ui/src/containers/TermsOfUse/index.tsx
+++ b/packages/ui/src/containers/TermsOfUse/index.tsx
@@ -1,5 +1,3 @@
-import ModalContainer from 'react-modal-promise';
-
 import TermsOfUseComponent from '@/components/TermsOfUse';
 import usePlatform from '@/hooks/use-platform';
 import useTerms from '@/hooks/use-terms';
@@ -18,19 +16,16 @@ const TermsOfUse = ({ className }: Props) => {
   }
 
   return (
-    <>
-      <TermsOfUseComponent
-        className={className}
-        name="termsAgreement"
-        termsUrl={termsSettings.contentUrl}
-        isChecked={termsAgreement}
-        onChange={(checked) => {
-          setTermsAgreement(checked);
-        }}
-        onTermsClick={isMobile ? termsOfUseIframeModalHandler : undefined}
-      />
-      <ModalContainer />
-    </>
+    <TermsOfUseComponent
+      className={className}
+      name="termsAgreement"
+      termsUrl={termsSettings.contentUrl}
+      isChecked={termsAgreement}
+      onChange={(checked) => {
+        setTermsAgreement(checked);
+      }}
+      onTermsClick={isMobile ? termsOfUseIframeModalHandler : undefined}
+    />
   );
 };
 
diff --git a/packages/ui/src/containers/UsernameSignIn/index.test.tsx b/packages/ui/src/containers/UsernameSignIn/index.test.tsx
index eb5d152db..c74ab6224 100644
--- a/packages/ui/src/containers/UsernameSignIn/index.test.tsx
+++ b/packages/ui/src/containers/UsernameSignIn/index.test.tsx
@@ -4,22 +4,14 @@ import { act } from 'react-dom/test-utils';
 import renderWithPageContext from '@/__mocks__/RenderWithPageContext';
 import SettingsProvider from '@/__mocks__/RenderWithPageContext/SettingsProvider';
 import { signInBasic } from '@/apis/sign-in';
-import { termsOfUseConfirmModalPromise } from '@/containers/TermsOfUse/TermsOfUseConfirmModal';
-import { termsOfUseIframeModalPromise } from '@/containers/TermsOfUse/TermsOfUseIframeModal';
-import { ConfirmModalMessage } from '@/types';
+import ConfirmModalProvider from '@/containers/ConfirmModalProvider';
 
 import UsernameSignIn from '.';
 
 jest.mock('@/apis/sign-in', () => ({ signInBasic: jest.fn(async () => 0) }));
-jest.mock('@/containers/TermsOfUse/TermsOfUseConfirmModal', () => ({
-  termsOfUseConfirmModalPromise: jest.fn().mockResolvedValue(true),
+jest.mock('react-device-detect', () => ({
+  isMobile: true,
 }));
-jest.mock('@/containers/TermsOfUse/TermsOfUseIframeModal', () => ({
-  termsOfUseIframeModalPromise: jest.fn().mockResolvedValue(true),
-}));
-
-const termsOfUseConfirmModalPromiseMock = termsOfUseConfirmModalPromise as jest.Mock;
-const termsOfUseIframeModalPromiseMock = termsOfUseIframeModalPromise as jest.Mock;
 
 describe('<UsernameSignIn>', () => {
   afterEach(() => {
@@ -70,41 +62,11 @@ describe('<UsernameSignIn>', () => {
   });
 
   test('should show terms confirm modal', async () => {
-    const { getByText, container } = renderWithPageContext(
+    const { queryByText, getByText, container } = renderWithPageContext(
       <SettingsProvider>
-        <UsernameSignIn />
-      </SettingsProvider>
-    );
-    const submitButton = getByText('action.sign_in');
-
-    const usernameInput = container.querySelector('input[name="username"]');
-    const passwordInput = container.querySelector('input[name="password"]');
-
-    if (usernameInput) {
-      fireEvent.change(usernameInput, { target: { value: 'username' } });
-    }
-
-    if (passwordInput) {
-      fireEvent.change(passwordInput, { target: { value: 'password' } });
-    }
-
-    await act(async () => {
-      fireEvent.click(submitButton);
-
-      await waitFor(() => {
-        expect(termsOfUseConfirmModalPromiseMock).toBeCalled();
-      });
-    });
-  });
-
-  test('should show terms detail modal', async () => {
-    termsOfUseConfirmModalPromiseMock.mockRejectedValue(
-      ConfirmModalMessage.SHOW_TERMS_DETAIL_MODAL
-    );
-
-    const { getByText, container } = renderWithPageContext(
-      <SettingsProvider>
-        <UsernameSignIn />
+        <ConfirmModalProvider>
+          <UsernameSignIn />
+        </ConfirmModalProvider>
       </SettingsProvider>
     );
     const submitButton = getByText('action.sign_in');
@@ -124,10 +86,49 @@ describe('<UsernameSignIn>', () => {
       fireEvent.click(submitButton);
     });
 
-    expect(signInBasic).not.toBeCalled();
+    await waitFor(() => {
+      expect(queryByText('description.agree_with_terms_modal')).not.toBeNull();
+    });
+  });
+
+  test('should show terms detail modal', async () => {
+    const { getByText, queryByText, container, queryByRole } = renderWithPageContext(
+      <SettingsProvider>
+        <ConfirmModalProvider>
+          <UsernameSignIn />
+        </ConfirmModalProvider>
+      </SettingsProvider>
+    );
+    const submitButton = getByText('action.sign_in');
+
+    const usernameInput = container.querySelector('input[name="username"]');
+    const passwordInput = container.querySelector('input[name="password"]');
+
+    if (usernameInput) {
+      fireEvent.change(usernameInput, { target: { value: 'username' } });
+    }
+
+    if (passwordInput) {
+      fireEvent.change(passwordInput, { target: { value: 'password' } });
+    }
+
+    act(() => {
+      fireEvent.click(submitButton);
+    });
 
     await waitFor(() => {
-      expect(termsOfUseIframeModalPromiseMock).toBeCalled();
+      expect(queryByText('description.agree_with_terms_modal')).not.toBeNull();
+    });
+
+    const termsLink = getByText('description.terms_of_use');
+
+    act(() => {
+      fireEvent.click(termsLink);
+    });
+
+    await waitFor(() => {
+      expect(queryByText('action.agree')).not.toBeNull();
+      expect(queryByRole('article')).not.toBeNull();
     });
   });
 
diff --git a/packages/ui/src/hooks/use-confirm-modal.ts b/packages/ui/src/hooks/use-confirm-modal.ts
index 7535110a8..d6df97059 100644
--- a/packages/ui/src/hooks/use-confirm-modal.ts
+++ b/packages/ui/src/hooks/use-confirm-modal.ts
@@ -2,4 +2,6 @@ import { useContext } from 'react';
 
 import { ConfirmModalContext } from '@/containers/ConfirmModalProvider';
 
+export type { ModalContentRenderProps } from '@/containers/ConfirmModalProvider';
+
 export const useConfirmModal = () => useContext(ConfirmModalContext);
diff --git a/packages/ui/src/hooks/use-terms.ts b/packages/ui/src/hooks/use-terms.ts
index 357a9efef..a51a4f4e6 100644
--- a/packages/ui/src/hooks/use-terms.ts
+++ b/packages/ui/src/hooks/use-terms.ts
@@ -1,34 +1,54 @@
 import { useContext, useCallback } from 'react';
 
-import { termsOfUseConfirmModalPromise } from '@/containers/TermsOfUse/TermsOfUseConfirmModal';
-import { termsOfUseIframeModalPromise } from '@/containers/TermsOfUse/TermsOfUseIframeModal';
+import { createIframeConfirmModalContent } from '@/containers/TermsOfUse/IframeConfirmModalContent';
+import TermsOfUseConfirmModalContent from '@/containers/TermsOfUse/TermsOfUseConfirmModalContent';
 import { ConfirmModalMessage } from '@/types';
-import { flattenPromiseResult } from '@/utils/promisify';
 
+import * as styles from '../components/ConfirmModal/MobileModal.module.scss';
+import { useConfirmModal } from './use-confirm-modal';
 import { PageContext } from './use-page-context';
 
 const useTerms = () => {
   const { termsAgreement, setTermsAgreement, experienceSettings } = useContext(PageContext);
+  const { show } = useConfirmModal();
 
   const { termsOfUse } = experienceSettings ?? {};
 
   const termsOfUseIframeModalHandler = useCallback(async () => {
-    const [result] = await flattenPromiseResult<boolean>(termsOfUseIframeModalPromise());
+    const [result] = await show({
+      className: styles.iframeModal,
+      ModalContent: () => createIframeConfirmModalContent(termsOfUse?.contentUrl),
+      confirmText: 'action.agree',
+    });
 
-    return Boolean(result);
-  }, []);
-
-  const termsOfUseConfirmModalHandler = useCallback(async () => {
-    const [result, error] = await flattenPromiseResult<boolean>(termsOfUseConfirmModalPromise());
-
-    if (error === ConfirmModalMessage.SHOW_TERMS_DETAIL_MODAL) {
-      const result = await termsOfUseIframeModalHandler();
-
-      return result;
+    // Update the local terms status
+    if (result) {
+      setTermsAgreement(true);
     }
 
-    return Boolean(result);
-  }, [termsOfUseIframeModalHandler]);
+    return result;
+  }, [setTermsAgreement, show, termsOfUse?.contentUrl]);
+
+  const termsOfUseConfirmModalHandler = useCallback(async () => {
+    const [result, data] = await show({
+      ModalContent: TermsOfUseConfirmModalContent,
+      confirmText: 'action.agree',
+    });
+
+    // Show Terms Detail Confirm Modal
+    if (data === ConfirmModalMessage.SHOW_TERMS_DETAIL_MODAL) {
+      const detailResult = await termsOfUseIframeModalHandler();
+
+      return detailResult;
+    }
+
+    // Update the local terms status
+    if (result) {
+      setTermsAgreement(true);
+    }
+
+    return result;
+  }, [setTermsAgreement, show, termsOfUseIframeModalHandler]);
 
   const termsValidation = useCallback(async () => {
     if (termsAgreement || !termsOfUse?.enabled || !termsOfUse.contentUrl) {
diff --git a/packages/ui/src/utils/promisify.test.ts b/packages/ui/src/utils/promisify.test.ts
deleted file mode 100644
index 331ef074d..000000000
--- a/packages/ui/src/utils/promisify.test.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-import { flattenPromiseResult } from './promisify';
-
-describe('promisify', () => {
-  test('flattenPromiseResult', async () => {
-    const promiseResolve = Promise.resolve('resolved');
-    const [result, rejection] = await flattenPromiseResult(promiseResolve);
-
-    expect(result).toBe('resolved');
-    expect(rejection).toBeUndefined();
-
-    // eslint-disable-next-line prefer-promise-reject-errors
-    const promiseRejection = Promise.reject('rejected');
-    const [_result, _rejection] = await flattenPromiseResult(promiseRejection);
-
-    expect(_result).toBeUndefined();
-    expect(_rejection).toBe('rejected');
-  });
-});
diff --git a/packages/ui/src/utils/promisify.ts b/packages/ui/src/utils/promisify.ts
deleted file mode 100644
index 174249ae4..000000000
--- a/packages/ui/src/utils/promisify.ts
+++ /dev/null
@@ -1,9 +0,0 @@
-export const flattenPromiseResult = async <T>(promise: Promise<T>): Promise<[T?, unknown?]> => {
-  try {
-    const result = await promise;
-
-    return [result];
-  } catch (error: unknown) {
-    return [undefined, error];
-  }
-};
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index c60b26b9d..86b29f420 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -692,7 +692,6 @@ importers:
       react-dom: ^18.0.0
       react-i18next: ^11.18.3
       react-modal: ^3.15.1
-      react-modal-promise: ^1.0.2
       react-router-dom: ^6.2.2
       react-string-replace: ^1.0.0
       react-timer-hook: ^3.0.5
@@ -746,7 +745,6 @@ importers:
       react-dom: 18.2.0_react@18.2.0
       react-i18next: 11.18.3_shxxmfhtk2bc4pbx5cyq3uoph4
       react-modal: 3.15.1_biqbaboplfbrettd7655fr4n2y
-      react-modal-promise: 1.0.2_biqbaboplfbrettd7655fr4n2y
       react-router-dom: 6.2.2_biqbaboplfbrettd7655fr4n2y
       react-string-replace: 1.0.0
       react-timer-hook: 3.0.5_biqbaboplfbrettd7655fr4n2y
@@ -13344,16 +13342,6 @@ packages:
       - supports-color
     dev: true
 
-  /react-modal-promise/1.0.2_biqbaboplfbrettd7655fr4n2y:
-    resolution: {integrity: sha512-dqT618ROhG8qh1+O6EZkia5ELw3zaZWGpMX2YfEH4bgwYENPuFonqKw1W70LFx3K/SCZvVBcD6UYEI12yzYXzg==}
-    peerDependencies:
-      react: '>=16.8.0 || ^18.0.0'
-      react-dom: '>=16.8.0'
-    dependencies:
-      react: 18.2.0
-      react-dom: 18.2.0_react@18.2.0
-    dev: true
-
   /react-modal/3.15.1_biqbaboplfbrettd7655fr4n2y:
     resolution: {integrity: sha512-duB9bxOaYg7Zt6TMFldIFxQRtSP+Dg3F1ZX3FXxSUn+3tZZ/9JCgeAQKDg7rhZSAqopq8TFRw3yIbnx77gyFTw==}
     engines: {node: '>=8'}