diff --git a/apps/mobile/src/connection/environment-owned-data-cleanup.test.ts b/apps/mobile/src/connection/environment-owned-data-cleanup.test.ts
new file mode 100644
index 0000000000000..efe489b0fde35
--- /dev/null
+++ b/apps/mobile/src/connection/environment-owned-data-cleanup.test.ts
@@ -0,0 +1,74 @@
+import { Persistence } from "@t3tools/client-runtime/platform";
+import { EnvironmentId } from "@t3tools/contracts";
+import { describe, expect, it } from "@effect/vitest";
+import * as Effect from "effect/Effect";
+import * as Layer from "effect/Layer";
+import * as Logger from "effect/Logger";
+import { vi } from "vite-plus/test";
+
+const harness = vi.hoisted(() => ({
+  clearOutbox: vi.fn<(environmentId: string) => Promise<void>>(),
+  clearDrafts: vi.fn<(environmentId: string) => Promise<void>>(),
+  clearComposerErrors: vi.fn(),
+}));
+
+vi.mock("../state/thread-outbox-removal", () => ({
+  clearThreadOutboxEnvironment: harness.clearOutbox,
+}));
+vi.mock("../state/use-composer-drafts", () => ({
+  clearComposerDraftsEnvironment: harness.clearDrafts,
+}));
+vi.mock("../state/thread-composer-error", () => ({
+  clearThreadComposerErrorsForEnvironment: harness.clearComposerErrors,
+}));
+
+import * as EnvironmentOwnedDataCleanup from "./environment-owned-data-cleanup";
+
+const ENVIRONMENT_ID = EnvironmentId.make("environment-1");
+
+describe("EnvironmentOwnedDataCleanup", () => {
+  it.effect("waits for the other clears and logs a bounded warning when one rejects", () => {
+    const warnings: Array<unknown> = [];
+    let releaseDrafts = () => {};
+    let draftsCleared = false;
+    // The drafts clear finishes only after the outbox failure is logged.
+    const logger = Logger.make(({ message }) => {
+      warnings.push(message);
+      releaseDrafts();
+    });
+    return Effect.gen(function* () {
+      harness.clearOutbox.mockRejectedValue(new Error("Some queued messages could not be read."));
+      harness.clearDrafts.mockImplementation(() =>
+        new Promise<void>((resolve) => {
+          releaseDrafts = resolve;
+        }).then(() => {
+          draftsCleared = true;
+        }),
+      );
+
+      const cleanup = yield* Persistence.EnvironmentOwnedDataCleanup;
+      yield* cleanup.clear(ENVIRONMENT_ID);
+
+      expect(draftsCleared).toBe(true);
+      expect(warnings).toEqual([
+        [
+          "Could not clear mobile environment-owned data.",
+          {
+            environmentId: ENVIRONMENT_ID,
+            operation: "outbox",
+            errorType: "error",
+            errorName: "Error",
+            stack: expect.any(String),
+          },
+        ],
+      ]);
+    }).pipe(
+      Effect.provide(
+        Layer.merge(
+          EnvironmentOwnedDataCleanup.layer,
+          Logger.layer([logger], { mergeWithExisting: false }),
+        ),
+      ),
+    );
+  });
+});
diff --git a/apps/mobile/src/connection/environment-owned-data-cleanup.ts b/apps/mobile/src/connection/environment-owned-data-cleanup.ts
new file mode 100644
index 0000000000000..28c6cda29a4d3
--- /dev/null
+++ b/apps/mobile/src/connection/environment-owned-data-cleanup.ts
@@ -0,0 +1,48 @@
+import { safeErrorLogAttributes } from "@t3tools/client-runtime/errors";
+import { Persistence } from "@t3tools/client-runtime/platform";
+import type { EnvironmentId } from "@t3tools/contracts";
+import * as Effect from "effect/Effect";
+import * as Layer from "effect/Layer";
+import * as Schema from "effect/Schema";
+
+import { clearThreadComposerErrorsForEnvironment } from "../state/thread-composer-error";
+import { clearThreadOutboxEnvironment } from "../state/thread-outbox-removal";
+import { clearComposerDraftsEnvironment } from "../state/use-composer-drafts";
+
+class EnvironmentOwnedDataClearError extends Schema.TaggedError<EnvironmentOwnedDataClearError>()(
+  "EnvironmentOwnedDataClearError",
+  { cause: Schema.Defect() },
+) {}
+
+export const layer = Layer.succeed(
+  Persistence.EnvironmentOwnedDataCleanup,
+  Persistence.EnvironmentOwnedDataCleanup.of({
+    clear: Effect.fn("Persistence.EnvironmentOwnedDataCleanup.clear")(function (environmentId) {
+      // Each clear settles on its own: a failure must not interrupt a clear that is still running.
+      const settle = (
+        operation: "outbox" | "drafts",
+        clear: (environmentId: EnvironmentId) => Promise<void>,
+      ) =>
+        Effect.tryPromise({
+          try: () => clear(environmentId),
+          catch: (cause) => new EnvironmentOwnedDataClearError({ cause }),
+        }).pipe(
+          Effect.catch((error) =>
+            Effect.logWarning("Could not clear mobile environment-owned data.", {
+              environmentId,
+              operation,
+              ...safeErrorLogAttributes(error.cause),
+            }),
+          ),
+        );
+      return Effect.all(
+        [
+          settle("outbox", clearThreadOutboxEnvironment),
+          settle("drafts", clearComposerDraftsEnvironment),
+          Effect.sync(() => clearThreadComposerErrorsForEnvironment(environmentId)),
+        ],
+        { concurrency: "unbounded", discard: true },
+      );
+    }),
+  }),
+);
diff --git a/apps/mobile/src/connection/platform.ts b/apps/mobile/src/connection/platform.ts
index 407016ab484d9..de461f35ab104 100644
--- a/apps/mobile/src/connection/platform.ts
+++ b/apps/mobile/src/connection/platform.ts
@@ -1,8 +1,4 @@
-import {
-  ClientCapabilities,
-  PlatformConnectionSource,
-  Persistence,
-} from "@t3tools/client-runtime/platform";
+import { ClientCapabilities, PlatformConnectionSource } from "@t3tools/client-runtime/platform";
 import {
   ConnectionBlockedError,
   ConnectionTransientError,
@@ -25,10 +21,8 @@ import { authClientMetadata } from "../lib/authClientMetadata";
 import * as Runtime from "../lib/runtime";
 import * as MobileStorage from "../persistence/mobile-storage";
 import { appAtomRegistry } from "../state/atom-registry";
-import { clearThreadOutboxEnvironment } from "../state/thread-outbox-removal";
-import { clearComposerDraftsEnvironment } from "../state/use-composer-drafts";
-import { clearThreadComposerErrorsForEnvironment } from "../state/thread-composer-error";
 import { mobileApplicationActiveWakeup } from "./app-state-wakeups";
+import * as EnvironmentOwnedDataCleanup from "./environment-owned-data-cleanup";
 import * as ConnectionStorage from "./storage";
 
 function networkStatus(state: Network.NetworkState): "unknown" | "offline" | "online" {
@@ -255,22 +249,6 @@ const layerPlatformConnectionSource = Layer.succeed(
 const layerProvidedConnectionStorage = ConnectionStorage.layer.pipe(Layer.provide(Runtime.layer));
 const layerProvidedCapabilities = layerCapabilities.pipe(Layer.provide(Runtime.layer));
 
-const layerEnvironmentOwnedDataCleanup = Layer.succeed(
-  Persistence.EnvironmentOwnedDataCleanup,
-  Persistence.EnvironmentOwnedDataCleanup.of({
-    clear: Effect.fn("Persistence.EnvironmentOwnedDataCleanup.clear")((environmentId) =>
-      Effect.all(
-        [
-          Effect.promise(() => clearThreadOutboxEnvironment(environmentId)),
-          Effect.promise(() => clearComposerDraftsEnvironment(environmentId)),
-          Effect.sync(() => clearThreadComposerErrorsForEnvironment(environmentId)),
-        ],
-        { concurrency: "unbounded", discard: true },
-      ),
-    ),
-  }),
-);
-
 type ConnectionPlatformLayerSource =
   | typeof layerProvidedConnectionStorage
   | typeof Runtime.layer
@@ -278,7 +256,7 @@ type ConnectionPlatformLayerSource =
   | typeof layerWakeups
   | typeof layerProvidedCapabilities
   | typeof layerPlatformConnectionSource
-  | typeof layerEnvironmentOwnedDataCleanup;
+  | typeof EnvironmentOwnedDataCleanup.layer;
 
 export const layer: Layer.Layer<
   Layer.Success<ConnectionPlatformLayerSource>,
@@ -291,5 +269,5 @@ export const layer: Layer.Layer<
   layerWakeups,
   layerProvidedCapabilities,
   layerPlatformConnectionSource,
-  layerEnvironmentOwnedDataCleanup,
+  EnvironmentOwnedDataCleanup.layer,
 );