diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 630f3ebef8..49bc67ada9 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -21,7 +21,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        job: [lint, prettier, typecheck, 'typecheck:web']
+        job:
+          [lint, prettier, 'typecheck:ios', 'typecheck:android', 'typecheck:web']
     steps:
       - name: Check out Git repository
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
diff --git a/modules/expo-bluesky-swiss-army/src/Referrer/index.ios.ts b/modules/expo-bluesky-swiss-army/src/Referrer/index.ios.ts
index 1bef0f74e9..5b0e566abd 100644
--- a/modules/expo-bluesky-swiss-army/src/Referrer/index.ios.ts
+++ b/modules/expo-bluesky-swiss-army/src/Referrer/index.ios.ts
@@ -6,7 +6,15 @@ export function getGooglePlayReferrerInfoAsync(): Promise<GooglePlayReferrerInfo
   throw new NotImplementedError()
 }
 
-export function getReferrerInfo(): ReferrerInfo | null {
+/*
+ * Promise-returning for parity with Android, whose native referrer API only
+ * exposes a promise.
+ */
+export function getReferrerInfo(): Promise<ReferrerInfo | null> {
+  return Promise.resolve(getReferrerInfoSync())
+}
+
+function getReferrerInfoSync(): ReferrerInfo | null {
   const referrer = SharedPrefs.getString('referrer')
   if (referrer) {
     SharedPrefs.removeValue('referrer')
diff --git a/modules/expo-bluesky-swiss-army/src/Referrer/index.ts b/modules/expo-bluesky-swiss-army/src/Referrer/index.ts
index 89ed4f58a3..3771e071de 100644
--- a/modules/expo-bluesky-swiss-army/src/Referrer/index.ts
+++ b/modules/expo-bluesky-swiss-army/src/Referrer/index.ts
@@ -5,6 +5,6 @@ export function getGooglePlayReferrerInfoAsync(): Promise<GooglePlayReferrerInfo
   throw new NotImplementedError()
 }
 
-export function getReferrerInfo(): ReferrerInfo | null {
+export function getReferrerInfo(): Promise<ReferrerInfo | null> {
   throw new NotImplementedError()
 }
diff --git a/modules/expo-bluesky-swiss-army/src/Referrer/index.web.ts b/modules/expo-bluesky-swiss-army/src/Referrer/index.web.ts
index 3f8671ac31..d0510ef89f 100644
--- a/modules/expo-bluesky-swiss-army/src/Referrer/index.web.ts
+++ b/modules/expo-bluesky-swiss-army/src/Referrer/index.web.ts
@@ -7,7 +7,15 @@ export function getGooglePlayReferrerInfoAsync(): Promise<GooglePlayReferrerInfo
   throw new NotImplementedError()
 }
 
-export function getReferrerInfo(): ReferrerInfo | null {
+/*
+ * Promise-returning for parity with Android, whose native referrer API only
+ * exposes a promise.
+ */
+export function getReferrerInfo(): Promise<ReferrerInfo | null> {
+  return Promise.resolve(getReferrerInfoSync())
+}
+
+function getReferrerInfoSync(): ReferrerInfo | null {
   if (
     Platform.OS === 'web' &&
     // for ssr
diff --git a/package.json b/package.json
index 3484bc643a..198e0e1c49 100644
--- a/package.json
+++ b/package.json
@@ -62,7 +62,9 @@
     "lint": "oxlint --quiet src modules",
     "lint-native": "swiftlint ./modules && ktlint ./modules",
     "lint-native:fix": "swiftlint --fix ./modules && ktlint --format ./modules",
-    "typecheck": "tsgo --project ./tsconfig.check.json",
+    "typecheck": "pnpm run typecheck:ios && pnpm run typecheck:android && pnpm run typecheck:web",
+    "typecheck:ios": "tsgo --project ./tsconfig.check.ios.json",
+    "typecheck:android": "tsgo --project ./tsconfig.check.android.json",
     "typecheck:web": "tsgo --project ./tsconfig.check.web.json",
     "e2e:mock-server": "cd dev-env && pnpm start",
     "e2e:build": "EXPO_PUBLIC_ENV=e2e NODE_ENV=test RN_SRC_EXT=e2e.ts,e2e.tsx expo run:ios",
diff --git a/src/Navigation.tsx b/src/Navigation.tsx
index 76fa7187b2..5207a3a123 100644
--- a/src/Navigation.tsx
+++ b/src/Navigation.tsx
@@ -1003,14 +1003,15 @@ function RoutesContainer({children}: React.PropsWithChildren<{}>) {
     })
 
     if (IS_WEB) {
-      const referrerInfo = Referrer.getReferrerInfo()
-      if (referrerInfo && referrerInfo.hostname !== 'bsky.app') {
-        ax.metric('deepLink:referrerReceived', {
-          to: window.location.href,
-          referrer: referrerInfo?.referrer,
-          hostname: referrerInfo?.hostname,
-        })
-      }
+      void Referrer.getReferrerInfo().then(referrerInfo => {
+        if (referrerInfo && referrerInfo.hostname !== 'bsky.app') {
+          ax.metric('deepLink:referrerReceived', {
+            to: window.location.href,
+            referrer: referrerInfo?.referrer,
+            hostname: referrerInfo?.hostname,
+          })
+        }
+      })
     }
 
     // temp, just testing
diff --git a/src/lib/hooks/useIntentHandler.ts b/src/lib/hooks/useIntentHandler.ts
index 5a9d0b39fe..eaa6482830 100644
--- a/src/lib/hooks/useIntentHandler.ts
+++ b/src/lib/hooks/useIntentHandler.ts
@@ -40,7 +40,7 @@ export function useIntentHandler() {
         await WebBrowser.dismissBrowser().catch(() => {})
       }
 
-      const referrerInfo = Referrer.getReferrerInfo()
+      const referrerInfo = await Referrer.getReferrerInfo()
       if (referrerInfo && referrerInfo.hostname !== 'bsky.app') {
         ax.metric('deepLink:referrerReceived', {
           to: url,
diff --git a/src/platform/misc.android-check.d.ts b/src/platform/misc.android-check.d.ts
new file mode 100644
index 0000000000..9c6361b5fb
--- /dev/null
+++ b/src/platform/misc.android-check.d.ts
@@ -0,0 +1,13 @@
+/*
+ * Used ONLY by the Android typecheck pass (tsconfig.check.android.json) - it
+ * is excluded from the other passes and has no runtime effect.
+ *
+ * react-native-device-attest's Android variant implements only the Play
+ * Integrity statics, so the iOS-only getDeviceCheckToken (whose app call
+ * site is IS_IOS-guarded) fails to resolve under .android module suffixes.
+ * Pin the module to its platform-neutral base class, which declares the
+ * full API surface.
+ */
+declare module 'react-native-device-attest' {
+  export {DeviceAttestBase as default} from 'react-native-device-attest/build/DeviceAttestBase'
+}
diff --git a/src/platform/misc.web-check.d.ts b/src/platform/misc.web-check.d.ts
index 81e0161353..d21fb93603 100644
--- a/src/platform/misc.web-check.d.ts
+++ b/src/platform/misc.web-check.d.ts
@@ -1,6 +1,6 @@
 /*
- * Used ONLY by the web typecheck pass (tsconfig.check.web.json) - it is not
- * included by the main tsconfig, and it has no runtime effect. See
+ * Used ONLY by the web typecheck pass (tsconfig.check.web.json) - it is
+ * excluded from the other passes and has no runtime effect. See
  * react-native-svg.web-check.d.ts for the full background on why some
  * packages need to be pinned to their native declarations under
  * `moduleSuffixes: [".web", ""]`.
diff --git a/src/platform/react-native-svg.web-check.d.ts b/src/platform/react-native-svg.web-check.d.ts
index c8886ee362..c969d0fe7a 100644
--- a/src/platform/react-native-svg.web-check.d.ts
+++ b/src/platform/react-native-svg.web-check.d.ts
@@ -1,13 +1,13 @@
 /*
- * Used ONLY by the web typecheck pass (tsconfig.check.web.json) - it is not
- * included by the main tsconfig, and it has no runtime effect.
+ * Used ONLY by the web typecheck pass (tsconfig.check.web.json) - it is
+ * excluded from the other passes and has no runtime effect.
  *
  * Under `moduleSuffixes: [".web", ""]`, react-native-svg's type entry
  * resolves to its DOM-flavored `ReactNativeSVG.web.d.ts`, a different API
  * surface (no SvgProps/PathProps, react-native-web style types) than the
  * native one the app is written against. At runtime the web build accepts
  * the same props, so this ambient declaration pins the package to its
- * native declarations for one coherent type surface across both passes.
+ * native declarations for one coherent type surface across all passes.
  *
  * moduleSuffixes remaps even explicit `.d.ts` specifiers, so this mirrors
  * the package's ReactNativeSVG.d.ts + elements.d.ts via deep module paths
diff --git a/tsconfig.check.android.json b/tsconfig.check.android.json
new file mode 100644
index 0000000000..3aa14b5615
--- /dev/null
+++ b/tsconfig.check.android.json
@@ -0,0 +1,14 @@
+{
+  "extends": "./tsconfig.check.json",
+  "compilerOptions": {
+    /*
+     * Mirrors Metro's resolution order for platform=android.
+     */
+    "moduleSuffixes": [".android", ".native", ""]
+  },
+  /*
+   * Narrows the base exclude so the *.android-check.d.ts ambient shims
+   * apply to this pass.
+   */
+  "exclude": ["src/platform/*.web-check.d.ts"]
+}
diff --git a/tsconfig.check.ios.json b/tsconfig.check.ios.json
new file mode 100644
index 0000000000..c91d6f804e
--- /dev/null
+++ b/tsconfig.check.ios.json
@@ -0,0 +1,9 @@
+{
+  "extends": "./tsconfig.check.json",
+  "compilerOptions": {
+    /*
+     * Mirrors Metro's resolution order for platform=ios.
+     */
+    "moduleSuffixes": [".ios", ".native", ""]
+  }
+}
diff --git a/tsconfig.check.json b/tsconfig.check.json
index f9f1370f6d..6a3a0ed03d 100644
--- a/tsconfig.check.json
+++ b/tsconfig.check.json
@@ -1,4 +1,12 @@
 {
   "extends": "./tsconfig.json",
-  "include": ["src", "modules", "app.config.js"]
+  "include": ["src", "modules", "app.config.js"],
+  /*
+   * Ambient check shims apply only to the platform pass that includes them
+   * back (tsconfig.check.android.json, tsconfig.check.web.json).
+   */
+  "exclude": [
+    "src/platform/*.android-check.d.ts",
+    "src/platform/*.web-check.d.ts"
+  ]
 }