diff --git a/.changeset/six-numbers-thank.md b/.changeset/six-numbers-thank.md
new file mode 100644
index 000000000000..cde19ec366bf
--- /dev/null
+++ b/.changeset/six-numbers-thank.md
@@ -0,0 +1,6 @@
+---
+"ledger-live-desktop": patch
+"live-mobile": patch
+---
+
+Add locale and ticker query params for buy/sell
diff --git a/apps/ledger-live-desktop/src/renderer/screens/exchange/index.tsx b/apps/ledger-live-desktop/src/renderer/screens/exchange/index.tsx
index e2cd295eeb91..91e13c956b16 100644
--- a/apps/ledger-live-desktop/src/renderer/screens/exchange/index.tsx
+++ b/apps/ledger-live-desktop/src/renderer/screens/exchange/index.tsx
@@ -4,7 +4,12 @@ import { RouteComponentProps, useLocation } from "react-router-dom";
 import { useSelector } from "react-redux";
 import { RampCatalog } from "@ledgerhq/live-common/platform/providers/RampCatalogProvider/types";
 import Card from "~/renderer/components/Box/Card";
-import { developerModeSelector, languageSelector } from "~/renderer/reducers/settings";
+import {
+  counterValueCurrencySelector,
+  developerModeSelector,
+  languageSelector,
+  localeSelector,
+} from "~/renderer/reducers/settings";
 import { accountsSelector } from "~/renderer/reducers/accounts";
 import { useRemoteLiveAppManifest } from "@ledgerhq/live-common/platform/providers/RemoteLiveAppProvider/index";
 import useTheme from "~/renderer/hooks/useTheme";
@@ -34,7 +39,9 @@ type ExchangeState = { account?: string } | undefined;
 const LiveAppExchange = ({ appId }: { appId: string }) => {
   const { state: urlParams, search } = useLocation<ExchangeState>();
   const searchParams = new URLSearchParams(search);
-  const locale = useSelector(languageSelector);
+  const lang = useSelector(languageSelector);
+  const locale = useSelector(localeSelector);
+  const { ticker: currencyTicker } = useSelector(counterValueCurrencySelector);
   const devMode = useSelector(developerModeSelector);
   const accounts = useSelector(accountsSelector);
 
@@ -96,7 +103,9 @@ const LiveAppExchange = ({ appId }: { appId: string }) => {
           inputs={{
             theme: themeType,
             ...customUrlParams,
-            lang: locale,
+            lang,
+            locale,
+            currencyTicker,
             devMode,
             ...Object.fromEntries(searchParams.entries()),
           }}
diff --git a/apps/ledger-live-desktop/tests/specs/services/buy.spec.ts b/apps/ledger-live-desktop/tests/specs/services/buy.spec.ts
index 217cda137327..c623e5fe7f8a 100644
--- a/apps/ledger-live-desktop/tests/specs/services/buy.spec.ts
+++ b/apps/ledger-live-desktop/tests/specs/services/buy.spec.ts
@@ -58,6 +58,8 @@ test("Buy / Sell @smoke", async ({ page }) => {
     await liveAppWebview.waitForLoaded();
     expect(await liveAppWebview.waitForCorrectTextInWebview("theme: dark")).toBe(true);
     expect(await liveAppWebview.waitForCorrectTextInWebview("lang: en")).toBe(true);
+    expect(await liveAppWebview.waitForCorrectTextInWebview("locale: en-US")).toBe(true);
+    expect(await liveAppWebview.waitForCorrectTextInWebview("currencyTicker: USD")).toBe(true);
     await expect
       .soft(page)
       .toHaveScreenshot("buy-app-opened.png", { mask: [page.locator("webview")] });
@@ -74,6 +76,8 @@ test("Buy / Sell @smoke", async ({ page }) => {
     ).toBe(true);
     expect(await liveAppWebview.waitForCorrectTextInWebview("mode: buy")).toBe(true);
     expect(await liveAppWebview.waitForCorrectTextInWebview("lang: en")).toBe(true);
+    expect(await liveAppWebview.waitForCorrectTextInWebview("locale: en-US")).toBe(true);
+    expect(await liveAppWebview.waitForCorrectTextInWebview("currencyTicker: USD")).toBe(true);
   });
 
   await test.step("Navigate to Buy app from asset", async () => {
@@ -83,6 +87,8 @@ test("Buy / Sell @smoke", async ({ page }) => {
 
     expect(await liveAppWebview.waitForCorrectTextInWebview("theme: dark")).toBe(true);
     expect(await liveAppWebview.waitForCorrectTextInWebview("lang: en")).toBe(true);
+    expect(await liveAppWebview.waitForCorrectTextInWebview("locale: en-US")).toBe(true);
+    expect(await liveAppWebview.waitForCorrectTextInWebview("currencyTicker: USD")).toBe(true);
     expect(await liveAppWebview.waitForCorrectTextInWebview("currency: ethereum")).toBe(true);
     expect(await liveAppWebview.waitForCorrectTextInWebview("mode: buy")).toBe(true);
   });
@@ -98,6 +104,8 @@ test("Buy / Sell @smoke", async ({ page }) => {
       await liveAppWebview.waitForCorrectTextInWebview("account: mock:1:bitcoin:true_bitcoin_0:"),
     ).toBe(true);
     expect(await liveAppWebview.waitForCorrectTextInWebview("lang: en")).toBe(true);
+    expect(await liveAppWebview.waitForCorrectTextInWebview("locale: en-US")).toBe(true);
+    expect(await liveAppWebview.waitForCorrectTextInWebview("currencyTicker: USD")).toBe(true);
     expect(await liveAppWebview.waitForCorrectTextInWebview("mode: buy")).toBe(true);
   });
 
@@ -112,6 +120,8 @@ test("Buy / Sell @smoke", async ({ page }) => {
       await liveAppWebview.waitForCorrectTextInWebview("account: mock:1:bitcoin:true_bitcoin_0:"),
     ).toBe(true);
     expect(await liveAppWebview.waitForCorrectTextInWebview("lang: en")).toBe(true);
+    expect(await liveAppWebview.waitForCorrectTextInWebview("locale: en-US")).toBe(true);
+    expect(await liveAppWebview.waitForCorrectTextInWebview("currencyTicker: USD")).toBe(true);
     expect(await liveAppWebview.waitForCorrectTextInWebview("mode: sell")).toBe(true);
   });
 
@@ -123,5 +133,7 @@ test("Buy / Sell @smoke", async ({ page }) => {
 
     expect(await liveAppWebview.waitForCorrectTextInWebview("theme: light")).toBe(true);
     expect(await liveAppWebview.waitForCorrectTextInWebview("lang: fr")).toBe(true);
+    expect(await liveAppWebview.waitForCorrectTextInWebview("locale: en-US")).toBe(true);
+    expect(await liveAppWebview.waitForCorrectTextInWebview("currencyTicker: USD")).toBe(true);
   });
 });
diff --git a/apps/ledger-live-mobile/src/screens/PTX/BuyAndSell/index.tsx b/apps/ledger-live-mobile/src/screens/PTX/BuyAndSell/index.tsx
index 0c469163f066..3e2de88570b9 100644
--- a/apps/ledger-live-mobile/src/screens/PTX/BuyAndSell/index.tsx
+++ b/apps/ledger-live-mobile/src/screens/PTX/BuyAndSell/index.tsx
@@ -13,7 +13,6 @@ import { useTheme } from "styled-components/native";
 import { Flex, InfiniteLoader } from "@ledgerhq/native-ui";
 import TrackScreen from "~/analytics/TrackScreen";
 import GenericErrorView from "~/components/GenericErrorView";
-import { useLocale } from "~/context/Locale";
 import { WebPTXPlayer } from "~/components/WebPTXPlayer";
 import { ExchangeNavigatorParamList } from "~/components/RootNavigator/types/ExchangeNavigator";
 import { StackNavigatorProps } from "~/components/RootNavigator/types/helpers";
@@ -23,6 +22,8 @@ import { useInternalAppIds } from "@ledgerhq/live-common/hooks/useInternalAppIds
 import { INTERNAL_APP_IDS, WALLET_API_VERSION } from "@ledgerhq/live-common/wallet-api/constants";
 import { walletSelector } from "~/reducers/wallet";
 import useEnv from "@ledgerhq/live-common/hooks/useEnv";
+import { counterValueCurrencySelector } from "~/reducers/settings";
+import { useSettings } from "~/hooks";
 
 export type Props = StackNavigatorProps<
   ExchangeNavigatorParamList,
@@ -42,7 +43,8 @@ export function BuyAndSellScreen({ route }: Props) {
   const localManifest = useLocalLiveAppManifest(platform);
   const remoteManifest = useRemoteLiveAppManifest(platform);
   const { state: remoteLiveAppState } = useRemoteLiveAppContext();
-  const { locale } = useLocale();
+  const { language, locale } = useSettings();
+  const { ticker: currencyTicker } = useSelector(counterValueCurrencySelector);
   const manifest = localManifest || remoteManifest;
   const internalAppIds = useInternalAppIds() || INTERNAL_APP_IDS;
   const walletState = useSelector(walletSelector);
@@ -95,7 +97,9 @@ export function BuyAndSellScreen({ route }: Props) {
         manifest={manifest}
         inputs={{
           theme,
-          lang: locale,
+          lang: language,
+          locale,
+          currencyTicker,
           devMode,
           ...customParams,
           ...Object.fromEntries(searchParams.entries()),