diff --git a/src/client/components/emoji-picker.vue b/src/client/components/emoji-picker.vue
index c2d1008e1..9a261ef83 100644
--- a/src/client/components/emoji-picker.vue
+++ b/src/client/components/emoji-picker.vue
@@ -99,7 +99,8 @@ import { faHeart, faFlag, faLaugh } from '@fortawesome/free-regular-svg-icons';
 import MkModal from '@/components/ui/modal.vue';
 import Particle from '@/components/particle.vue';
 import * as os from '@/os';
-import { isDeviceTouch } from '../scripts/is-device-touch';
+import { isDeviceTouch } from '@/scripts/is-device-touch';
+import { isMobile } from '@/scripts/is-mobile';
 import { emojiCategories } from '@/instance';
 
 export default defineComponent({
@@ -322,7 +323,7 @@ export default defineComponent({
 	},
 
 	mounted() {
-		if (!os.isMobile) {
+		if (!isMobile && !isDeviceTouch) {
 			this.$refs.search.focus({
 				preventScroll: true
 			});
diff --git a/src/client/components/post-form.vue b/src/client/components/post-form.vue
index d2c0cffa1..fa9aeff8a 100644
--- a/src/client/components/post-form.vue
+++ b/src/client/components/post-form.vue
@@ -69,6 +69,7 @@ import { noteVisibilities } from '../../types';
 import * as os from '@/os';
 import { selectFile } from '@/scripts/select-file';
 import { notePostInterruptors, postFormActions } from '@/store';
+import { isMobile } from '@/scripts/is-mobile';
 
 export default defineComponent({
 	components: {
@@ -554,7 +555,7 @@ export default defineComponent({
 				localOnly: this.localOnly,
 				visibility: this.visibility,
 				visibleUserIds: this.visibility == 'specified' ? this.visibleUsers.map(u => u.id) : undefined,
-				viaMobile: os.isMobile
+				viaMobile: isMobile
 			};
 
 			// plugin
diff --git a/src/client/init.ts b/src/client/init.ts
index c3be85a85..146c54fa6 100644
--- a/src/client/init.ts
+++ b/src/client/init.ts
@@ -49,15 +49,16 @@ import { router } from '@/router';
 import { applyTheme } from '@/scripts/theme';
 import { isDeviceDarkmode } from '@/scripts/is-device-darkmode';
 import { i18n } from '@/i18n';
-import { stream, isMobile, dialog, post } from '@/os';
+import { stream, dialog, post } from '@/os';
 import * as sound from '@/scripts/sound';
 import { $i, refreshAccount, login, updateAccount, signout } from '@/account';
 import { defaultStore, ColdDeviceStorage } from '@/store';
 import { fetchInstance, instance } from '@/instance';
-import { makeHotkey } from './scripts/hotkey';
-import { search } from './scripts/search';
-import { getThemes } from './theme-store';
-import { initializeSw } from './scripts/initialize-sw';
+import { makeHotkey } from '@/scripts/hotkey';
+import { search } from '@/scripts/search';
+import { isMobile } from '@/scripts/is-mobile';
+import { getThemes } from '@/theme-store';
+import { initializeSw } from '@/scripts/initialize-sw';
 
 console.info(`Misskey v${version}`);
 
diff --git a/src/client/os.ts b/src/client/os.ts
index 95dcd3eb6..59ee3617e 100644
--- a/src/client/os.ts
+++ b/src/client/os.ts
@@ -9,9 +9,6 @@ import { resolve } from '@/router';
 import { $i } from '@/account';
 import { defaultStore } from '@/store';
 
-const ua = navigator.userAgent.toLowerCase();
-export const isMobile = /mobile|iphone|ipad|android/.test(ua);
-
 export const stream = markRaw(new Stream());
 
 export const pendingApiRequestsCount = ref(0);
diff --git a/src/client/scripts/is-mobile.ts b/src/client/scripts/is-mobile.ts
new file mode 100644
index 000000000..60cb59f91
--- /dev/null
+++ b/src/client/scripts/is-mobile.ts
@@ -0,0 +1,2 @@
+const ua = navigator.userAgent.toLowerCase();
+export const isMobile = /mobile|iphone|ipad|android/.test(ua);
diff --git a/src/client/ui/chat/post-form.vue b/src/client/ui/chat/post-form.vue
index 833c4b406..38fe48cc6 100644
--- a/src/client/ui/chat/post-form.vue
+++ b/src/client/ui/chat/post-form.vue
@@ -64,6 +64,7 @@ import { noteVisibilities } from '../../../types';
 import * as os from '@/os';
 import { selectFile } from '@/scripts/select-file';
 import { notePostInterruptors, postFormActions } from '@/store';
+import { isMobile } from '@/scripts/is-mobile';
 
 export default defineComponent({
 	components: {
@@ -541,7 +542,7 @@ export default defineComponent({
 				localOnly: this.localOnly,
 				visibility: this.visibility,
 				visibleUserIds: this.visibility == 'specified' ? this.visibleUsers.map(u => u.id) : undefined,
-				viaMobile: os.isMobile
+				viaMobile: isMobile
 			};
 
 			// plugin