diff --git a/app/components/post_draft/send_handler/send_handler.tsx b/app/components/post_draft/send_handler/send_handler.tsx
index e9aa0d71fb8..a936bbe81ad 100644
--- a/app/components/post_draft/send_handler/send_handler.tsx
+++ b/app/components/post_draft/send_handler/send_handler.tsx
@@ -166,7 +166,7 @@ export default function SendHandler({
 
     const sendCommand = useCallback(async () => {
         if (value.trim().startsWith('/call')) {
-            const {handled, error} = await handleCallsSlashCommand(value.trim(), serverUrl, channelId, rootId, currentUserId, intl);
+            const {handled, error} = await handleCallsSlashCommand(value.trim(), serverUrl, channelId, channelType ?? '', rootId, currentUserId, intl);
             if (handled) {
                 setSendingMessage(false);
                 clearDraft();
diff --git a/app/products/calls/actions/calls.ts b/app/products/calls/actions/calls.ts
index 1b851f87e20..2c7d6b2947a 100644
--- a/app/products/calls/actions/calls.ts
+++ b/app/products/calls/actions/calls.ts
@@ -30,6 +30,7 @@ import {
     setSpeakerPhone,
 } from '@calls/state';
 import {type AudioDevice, type Call, type CallSession, type CallsConnection, EndCallReturn} from '@calls/types/calls';
+import {areGroupCallsAllowed} from '@calls/utils';
 import {General, Preferences} from '@constants';
 import Calls from '@constants/calls';
 import DatabaseManager from '@database/manager';
@@ -493,7 +494,7 @@ export const dismissIncomingCall = async (serverUrl: string, channelId: string)
 };
 
 // handleCallsSlashCommand will return true if the slash command was handled
-export const handleCallsSlashCommand = async (value: string, serverUrl: string, channelId: string, rootId: string, currentUserId: string, intl: IntlShape):
+export const handleCallsSlashCommand = async (value: string, serverUrl: string, channelId: string, channelType: string, rootId: string, currentUserId: string, intl: IntlShape):
     Promise<{ handled?: boolean; error?: string }> => {
     const tokens = value.split(' ');
     if (tokens.length < 2 || tokens[0] !== '/call') {
@@ -505,6 +506,15 @@ export const handleCallsSlashCommand = async (value: string, serverUrl: string,
             await handleEndCall(serverUrl, channelId, currentUserId, intl);
             return {handled: true};
         case 'start': {
+            if (!areGroupCallsAllowed(getCallsConfig(serverUrl)) && channelType !== General.DM_CHANNEL) {
+                return {
+                    error: intl.formatMessage({
+                        id: 'mobile.calls_group_calls_not_available',
+                        defaultMessage: 'Calls are only available in DM channels.',
+                    }),
+                };
+            }
+
             if (getChannelsWithCalls(serverUrl)[channelId]) {
                 return {
                     error: intl.formatMessage({
@@ -518,6 +528,15 @@ export const handleCallsSlashCommand = async (value: string, serverUrl: string,
             return {handled: true};
         }
         case 'join': {
+            if (!areGroupCallsAllowed(getCallsConfig(serverUrl)) && channelType !== General.DM_CHANNEL) {
+                return {
+                    error: intl.formatMessage({
+                        id: 'mobile.calls_group_calls_not_available',
+                        defaultMessage: 'Calls are only available in DM channels.',
+                    }),
+                };
+            }
+
             const title = tokens.length > 2 ? tokens.slice(2).join(' ') : undefined;
             await leaveAndJoinWithAlert(intl, serverUrl, channelId, title, rootId);
             return {handled: true};
diff --git a/app/products/calls/types/calls.ts b/app/products/calls/types/calls.ts
index dc2da1f8918..c1d5111fa25 100644
--- a/app/products/calls/types/calls.ts
+++ b/app/products/calls/types/calls.ts
@@ -177,6 +177,7 @@ export const DefaultCallsConfig: CallsConfigState = {
     HostControlsAllowed: false,
     EnableAV1: false,
     TranscribeAPI: TranscribeAPI.WhisperCPP,
+    GroupCallsAllowed: true, // Set to true to keep backward compatibility with older servers.
 };
 
 export type ApiResp = {
diff --git a/app/products/calls/utils.ts b/app/products/calls/utils.ts
index 7f8b162afa9..086df8ec3cf 100644
--- a/app/products/calls/utils.ts
+++ b/app/products/calls/utils.ts
@@ -108,6 +108,10 @@ export function isHostControlsAllowed(config: CallsConfigState) {
     return Boolean(config.HostControlsAllowed);
 }
 
+export function areGroupCallsAllowed(config: CallsConfigState) {
+    return Boolean(config.GroupCallsAllowed);
+}
+
 export function isCallsCustomMessage(post: PostModel | Post): boolean {
     return Boolean(post.type && post.type === Post.POST_TYPES.CUSTOM_CALLS);
 }
diff --git a/app/screens/channel/channel.tsx b/app/screens/channel/channel.tsx
index 55e07186452..845d20e6bbf 100644
--- a/app/screens/channel/channel.tsx
+++ b/app/screens/channel/channel.tsx
@@ -34,6 +34,7 @@ type ChannelProps = {
     showJoinCallBanner: boolean;
     isInACall: boolean;
     isCallsEnabledInChannel: boolean;
+    groupCallsAllowed: boolean;
     showIncomingCalls: boolean;
     isTabletView?: boolean;
     dismissedGMasDMNotice: PreferenceModel[];
@@ -58,6 +59,7 @@ const Channel = ({
     showJoinCallBanner,
     isInACall,
     isCallsEnabledInChannel,
+    groupCallsAllowed,
     showIncomingCalls,
     isTabletView,
     dismissedGMasDMNotice,
@@ -125,6 +127,7 @@ const Channel = ({
                     channelId={channelId}
                     componentId={componentId}
                     callsEnabledInChannel={isCallsEnabledInChannel}
+                    groupCallsAllowed={groupCallsAllowed}
                     isTabletView={isTabletView}
                     shouldRenderBookmarks={shouldRender}
                 />
diff --git a/app/screens/channel/header/header.tsx b/app/screens/channel/header/header.tsx
index 27b58498053..d9ea6981eec 100644
--- a/app/screens/channel/header/header.tsx
+++ b/app/screens/channel/header/header.tsx
@@ -46,6 +46,7 @@ type ChannelProps = {
     searchTerm: string;
     teamId: string;
     callsEnabledInChannel: boolean;
+    groupCallsAllowed: boolean;
     isTabletView?: boolean;
     shouldRenderBookmarks: boolean;
 };
@@ -78,7 +79,7 @@ const getStyleSheet = makeStyleSheetFromTheme((theme: Theme) => ({
 const ChannelHeader = ({
     canAddBookmarks, channelId, channelType, componentId, customStatus, displayName, hasBookmarks,
     isBookmarksEnabled, isCustomStatusEnabled, isCustomStatusExpired, isOwnDirectMessage, memberCount,
-    searchTerm, teamId, callsEnabledInChannel, isTabletView, shouldRenderBookmarks,
+    searchTerm, teamId, callsEnabledInChannel, groupCallsAllowed, isTabletView, shouldRenderBookmarks,
 }: ChannelProps) => {
     const intl = useIntl();
     const isTablet = useIsTablet();
@@ -89,7 +90,10 @@ const ChannelHeader = ({
 
     // NOTE: callsEnabledInChannel will be true/false (not undefined) based on explicit state + the DefaultEnabled system setting
     //   which ultimately comes from channel/index.tsx, and observeIsCallsEnabledInChannel
-    const callsAvailable = callsEnabledInChannel;
+    let callsAvailable = callsEnabledInChannel;
+    if (!groupCallsAllowed && channelType !== General.DM_CHANNEL) {
+        callsAvailable = false;
+    }
 
     const isDMorGM = isTypeDMorGM(channelType);
     const contextStyle = useMemo(() => ({
diff --git a/app/screens/channel/index.tsx b/app/screens/channel/index.tsx
index 049452fde9e..f7b20dc1d99 100644
--- a/app/screens/channel/index.tsx
+++ b/app/screens/channel/index.tsx
@@ -5,6 +5,7 @@ import {withDatabase, withObservables} from '@nozbe/watermelondb/react';
 import {combineLatestWith, distinctUntilChanged, of as of$, switchMap} from 'rxjs';
 
 import {observeCallStateInChannel, observeIsCallsEnabledInChannel} from '@calls/observers';
+import {observeCallsConfig} from '@calls/state';
 import {Preferences} from '@constants';
 import {withServerUrl} from '@context/server';
 import {observeCurrentChannel} from '@queries/servers/channel';
@@ -43,10 +44,16 @@ const enhanced = withObservables([], ({database, serverUrl}: EnhanceProps) => {
         }),
     );
 
+    const groupCallsAllowed = observeCallsConfig(serverUrl).pipe(
+        switchMap((config) => of$(config.GroupCallsAllowed)),
+        distinctUntilChanged(),
+    );
+
     return {
         channelId,
         ...observeCallStateInChannel(serverUrl, database, channelId),
         isCallsEnabledInChannel: observeIsCallsEnabledInChannel(database, serverUrl, channelId),
+        groupCallsAllowed,
         dismissedGMasDMNotice,
         channelType,
         currentUserId,
diff --git a/app/screens/channel_info/channel_info.tsx b/app/screens/channel_info/channel_info.tsx
index 40d8214119d..060ebbec5f4 100644
--- a/app/screens/channel_info/channel_info.tsx
+++ b/app/screens/channel_info/channel_info.tsx
@@ -28,13 +28,14 @@ import type {AvailableScreens} from '@typings/screens/navigation';
 type Props = {
     canAddBookmarks: boolean;
     canEnableDisableCalls: boolean;
-    canManageMembers: boolean;
     canManageSettings: boolean;
     channelId: string;
     closeButtonId: string;
     componentId: AvailableScreens;
     isBookmarksEnabled: boolean;
     isCallsEnabledInChannel: boolean;
+    groupCallsAllowed: boolean;
+    canManageMembers: boolean;
     isConvertGMFeatureAvailable: boolean;
     isCRTEnabled: boolean;
     isGuestUser: boolean;
@@ -68,6 +69,7 @@ const ChannelInfo = ({
     componentId,
     isBookmarksEnabled,
     isCallsEnabledInChannel,
+    groupCallsAllowed,
     isConvertGMFeatureAvailable,
     isCRTEnabled,
     isGuestUser,
@@ -79,7 +81,10 @@ const ChannelInfo = ({
 
     // NOTE: isCallsEnabledInChannel will be true/false (not undefined) based on explicit state + the DefaultEnabled system setting
     //   which comes from observeIsCallsEnabledInChannel
-    const callsAvailable = isCallsEnabledInChannel;
+    let callsAvailable = isCallsEnabledInChannel;
+    if (!groupCallsAllowed && type !== General.DM_CHANNEL) {
+        callsAvailable = false;
+    }
 
     const onPressed = useCallback(() => {
         return dismissModal({componentId});
diff --git a/app/screens/channel_info/index.ts b/app/screens/channel_info/index.ts
index e6b2c2761c9..da0b1a64ba1 100644
--- a/app/screens/channel_info/index.ts
+++ b/app/screens/channel_info/index.ts
@@ -102,6 +102,10 @@ const enhanced = withObservables([], ({serverUrl, database}: Props) => {
         }),
     );
     const isCallsEnabledInChannel = observeIsCallsEnabledInChannel(database, serverUrl, observeCurrentChannelId(database));
+    const groupCallsAllowed = observeCallsConfig(serverUrl).pipe(
+        switchMap((config) => of$(config.GroupCallsAllowed)),
+        distinctUntilChanged(),
+    );
 
     const canManageMembers = currentUser.pipe(
         combineLatestWith(channelId),
@@ -135,11 +139,12 @@ const enhanced = withObservables([], ({serverUrl, database}: Props) => {
     return {
         type,
         canEnableDisableCalls,
+        isCallsEnabledInChannel,
+        groupCallsAllowed,
         canAddBookmarks,
         canManageMembers,
         canManageSettings,
         isBookmarksEnabled,
-        isCallsEnabledInChannel,
         isCRTEnabled: observeIsCRTEnabled(database),
         isGuestUser,
         isConvertGMFeatureAvailable,
diff --git a/assets/base/i18n/en.json b/assets/base/i18n/en.json
index 3705d2bd090..e03c2695e82 100644
--- a/assets/base/i18n/en.json
+++ b/assets/base/i18n/en.json
@@ -486,6 +486,7 @@
   "mobile.calls_ended_at": "Ended at",
   "mobile.calls_error_message": "Error: {error}",
   "mobile.calls_error_title": "Error",
+  "mobile.calls_group_calls_not_available": "Calls are only available in DM channels.",
   "mobile.calls_headset": "Headset",
   "mobile.calls_hide_cc": "Hide live captions",
   "mobile.calls_host": "host",
diff --git a/package-lock.json b/package-lock.json
index dc8da8df33d..f6c549742d1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,7 +17,7 @@
         "@formatjs/intl-numberformat": "8.10.3",
         "@formatjs/intl-pluralrules": "5.2.14",
         "@gorhom/bottom-sheet": "4.6.4",
-        "@mattermost/calls": "github:mattermost/calls-common#5cc5598fe9574125a61a3b54501deb6b65fcc70f",
+        "@mattermost/calls": "github:mattermost/calls-common#1ce6defb1ee0c1e0f106ddff8f46c37d10d60b76",
         "@mattermost/compass-icons": "0.1.45",
         "@mattermost/hardware-keyboard": "file:./libraries/@mattermost/hardware-keyboard",
         "@mattermost/keyboard-tracker": "file:./libraries/@mattermost/keyboard-tracker",
@@ -5860,8 +5860,8 @@
     "node_modules/@mattermost/calls": {
       "name": "@mattermost/calls-common",
       "version": "0.27.2",
-      "resolved": "git+ssh://git@github.com/mattermost/calls-common.git#5cc5598fe9574125a61a3b54501deb6b65fcc70f",
-      "integrity": "sha512-oJkw51naheYGDlxV4iRx0rnI1zAjWE/InRG6QXPvq2nbJ9U0QUPsk/H9/O6trP2ZuXR/v1u72z/OwqLud1blbQ=="
+      "resolved": "git+ssh://git@github.com/mattermost/calls-common.git#1ce6defb1ee0c1e0f106ddff8f46c37d10d60b76",
+      "integrity": "sha512-VeX0GT1g8bl7AqG5TJEnbkTTVbc+CqZttpPBKYDkMJd86CGjtURc4o83OUu3TNsEI3opSpJfbetScUTG9TWNLw=="
     },
     "node_modules/@mattermost/commonmark": {
       "version": "0.30.1-2",
diff --git a/package.json b/package.json
index 2c31d2015d1..c587d91d24f 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "@formatjs/intl-numberformat": "8.10.3",
     "@formatjs/intl-pluralrules": "5.2.14",
     "@gorhom/bottom-sheet": "4.6.4",
-    "@mattermost/calls": "github:mattermost/calls-common#5cc5598fe9574125a61a3b54501deb6b65fcc70f",
+    "@mattermost/calls": "github:mattermost/calls-common#1ce6defb1ee0c1e0f106ddff8f46c37d10d60b76",
     "@mattermost/compass-icons": "0.1.45",
     "@mattermost/hardware-keyboard": "file:./libraries/@mattermost/hardware-keyboard",
     "@mattermost/keyboard-tracker": "file:./libraries/@mattermost/keyboard-tracker",