diff --git a/src/geolocation/util.ts b/src/geolocation/util.ts
index e9250b0b4c..74311e7b90 100644
--- a/src/geolocation/util.ts
+++ b/src/geolocation/util.ts
@@ -3,6 +3,7 @@ import {type LocationGeocodedAddress} from 'expo-location'
 import {IS_ANDROID} from '#/env'
 import {logger} from '#/geolocation/logger'
 import {type Geolocation} from '#/geolocation/types'
+import {device} from '#/storage'
 
 /**
  * Maps full US region names to their short codes.
@@ -125,3 +126,21 @@ export function mergeGeolocations(
   })
   return geolocation
 }
+
+/**
+ * Get's the merged geolocation as a string in the format of
+ * "countryCode-regionCode", or just "countryCode" if regionCode is not
+ * available.
+ */
+export function getGeolocationString() {
+  const geo = device.get(['mergedGeolocation'])
+  if (!geo) return
+  const {countryCode, regionCode} = geo
+  if (countryCode) {
+    if (regionCode) {
+      return `${countryCode}-${regionCode}`
+    } else {
+      return countryCode
+    }
+  }
+}
diff --git a/src/lib/api/feed/custom.ts b/src/lib/api/feed/custom.ts
index 18bb8c8f07..540325fc5b 100644
--- a/src/lib/api/feed/custom.ts
+++ b/src/lib/api/feed/custom.ts
@@ -9,6 +9,7 @@ import {
   getAppLanguageAsContentLanguage,
   getContentLanguages,
 } from '#/state/preferences/languages'
+import {getDeviceId} from '#/analytics/identifiers'
 import {type FeedAPI, type FeedAPIResponse} from './types'
 import {createBskyTopicsHeader, isBlueskyOwnedFeed} from './utils'
 
@@ -62,12 +63,15 @@ export class CustomFeedAPI implements FeedAPI {
             limit,
           },
           {
-            headers: {
-              ...(isBlueskyOwned
-                ? createBskyTopicsHeader(this.userInterests)
-                : {}),
-              'Accept-Language': contentLangs,
-            },
+            headers: isBlueskyOwned
+              ? {
+                  ...createBskyTopicsHeader(this.userInterests),
+                  'X-Bsky-Stable-Id': getDeviceId(),
+                  'Accept-Language': contentLangs,
+                }
+              : {
+                  'Accept-Language': contentLangs,
+                },
           },
         )
       : await loggedOutFetch({...this.params, cursor, limit})