diff --git a/native/backup/use-client-backup.js b/native/backup/use-client-backup.js
--- a/native/backup/use-client-backup.js
+++ b/native/backup/use-client-backup.js
@@ -93,7 +93,12 @@
     }
 
     const backupSecret = await getBackupSecret();
-    return authVerifiedEndpoint(commCoreModule.createFullBackup(backupSecret));
+    const callback = (backupID: string) => {
+      console.log('Compaction created. Starting upload. backupID:', backupID);
+    };
+    return authVerifiedEndpoint(
+      commCoreModule.createFullBackup(backupSecret, callback),
+    );
   }, [loggedIn, currentUserID, getBackupSecret, authVerifiedEndpoint]);
 
   const createUserKeysBackup = React.useCallback(async () => {
diff --git a/native/cpp/CommonCpp/NativeModules/CommCoreModule.h b/native/cpp/CommonCpp/NativeModules/CommCoreModule.h
--- a/native/cpp/CommonCpp/NativeModules/CommCoreModule.h
+++ b/native/cpp/CommonCpp/NativeModules/CommCoreModule.h
@@ -209,8 +209,10 @@
   virtual void innerClearCommServicesAuthMetadata();
   virtual void startBackupHandler(jsi::Runtime &rt) override;
   virtual void stopBackupHandler(jsi::Runtime &rt) override;
-  virtual jsi::Value
-  createFullBackup(jsi::Runtime &rt, jsi::String backupSecret) override;
+  virtual jsi::Value createFullBackup(
+      jsi::Runtime &rt,
+      jsi::String backupSecret,
+      jsi::Function compactionCreationCallback) override;
   virtual jsi::Value
   createUserKeysBackup(jsi::Runtime &rt, jsi::String backupSecret) override;
   virtual jsi::Value restoreBackupData(
diff --git a/native/cpp/CommonCpp/NativeModules/CommCoreModule.cpp b/native/cpp/CommonCpp/NativeModules/CommCoreModule.cpp
--- a/native/cpp/CommonCpp/NativeModules/CommCoreModule.cpp
+++ b/native/cpp/CommonCpp/NativeModules/CommCoreModule.cpp
@@ -2383,9 +2383,23 @@
   return backupSIWEMessageFuture.get();
 }
 
-jsi::Value
-CommCoreModule::createFullBackup(jsi::Runtime &rt, jsi::String backupSecret) {
+jsi::Value CommCoreModule::createFullBackup(
+    jsi::Runtime &rt,
+    jsi::String backupSecret,
+    jsi::Function compactionCreationCallback) {
   std::string backupSecretStr = backupSecret.utf8(rt);
+
+  auto dummyReject = jsi::Function::createFromHostFunction(
+      rt,
+      jsi::PropNameID::forAscii(rt, "_reject"),
+      0,
+      [](jsi::Runtime &rt,
+         const jsi::Value &thisVal,
+         const jsi::Value *args,
+         size_t count) { return jsi::Value::undefined(); });
+  auto compactionCreationPromise = std::make_shared<Promise>(
+      rt, std::move(compactionCreationCallback), std::move(dummyReject));
+
   return createPromiseAsJSIValue(
       rt, [=](jsi::Runtime &innerRt, std::shared_ptr<Promise> promise) {
         std::string backupMessage;
@@ -2419,6 +2433,9 @@
           }
 
           if (!error.size()) {
+
+            auto compactionCreationID = RustPromiseManager::instance.addPromise(
+                {compactionCreationPromise, this->jsInvoker_, innerRt});
             auto currentID = RustPromiseManager::instance.addPromise(
                 {promise, this->jsInvoker_, innerRt});
             ::createBackup(
@@ -2427,6 +2444,7 @@
                 rust::string(pickleKey),
                 rust::string(pickledAccount),
                 rust::string(backupMessage),
+                compactionCreationID,
                 currentID);
           } else {
             this->jsInvoker_->invokeAsync(
diff --git a/native/cpp/CommonCpp/_generated/commJSI-generated.cpp b/native/cpp/CommonCpp/_generated/commJSI-generated.cpp
--- a/native/cpp/CommonCpp/_generated/commJSI-generated.cpp
+++ b/native/cpp/CommonCpp/_generated/commJSI-generated.cpp
@@ -161,7 +161,7 @@
   return static_cast<CommCoreModuleSchemaCxxSpecJSI *>(&turboModule)->createUserKeysBackup(rt, args[0].asString(rt));
 }
 static jsi::Value __hostFunction_CommCoreModuleSchemaCxxSpecJSI_createFullBackup(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
-  return static_cast<CommCoreModuleSchemaCxxSpecJSI *>(&turboModule)->createFullBackup(rt, args[0].asString(rt));
+  return static_cast<CommCoreModuleSchemaCxxSpecJSI *>(&turboModule)->createFullBackup(rt, args[0].asString(rt), args[1].asObject(rt).asFunction(rt));
 }
 static jsi::Value __hostFunction_CommCoreModuleSchemaCxxSpecJSI_restoreBackupData(jsi::Runtime &rt, TurboModule &turboModule, const jsi::Value* args, size_t count) {
   return static_cast<CommCoreModuleSchemaCxxSpecJSI *>(&turboModule)->restoreBackupData(rt, args[0].asString(rt), args[1].asString(rt), args[2].asString(rt), args[3].asString(rt));
@@ -288,7 +288,7 @@
   methodMap_["startBackupHandler"] = MethodMetadata {0, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_startBackupHandler};
   methodMap_["stopBackupHandler"] = MethodMetadata {0, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_stopBackupHandler};
   methodMap_["createUserKeysBackup"] = MethodMetadata {1, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_createUserKeysBackup};
-  methodMap_["createFullBackup"] = MethodMetadata {1, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_createFullBackup};
+  methodMap_["createFullBackup"] = MethodMetadata {2, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_createFullBackup};
   methodMap_["restoreBackupData"] = MethodMetadata {4, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_restoreBackupData};
   methodMap_["getQRAuthBackupData"] = MethodMetadata {0, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_getQRAuthBackupData};
   methodMap_["retrieveLatestBackupInfo"] = MethodMetadata {1, __hostFunction_CommCoreModuleSchemaCxxSpecJSI_retrieveLatestBackupInfo};
diff --git a/native/cpp/CommonCpp/_generated/commJSI.h b/native/cpp/CommonCpp/_generated/commJSI.h
--- a/native/cpp/CommonCpp/_generated/commJSI.h
+++ b/native/cpp/CommonCpp/_generated/commJSI.h
@@ -67,7 +67,7 @@
   virtual void startBackupHandler(jsi::Runtime &rt) = 0;
   virtual void stopBackupHandler(jsi::Runtime &rt) = 0;
   virtual jsi::Value createUserKeysBackup(jsi::Runtime &rt, jsi::String backupSecret) = 0;
-  virtual jsi::Value createFullBackup(jsi::Runtime &rt, jsi::String backupSecret) = 0;
+  virtual jsi::Value createFullBackup(jsi::Runtime &rt, jsi::String backupSecret, jsi::Function compactionCreationCallback) = 0;
   virtual jsi::Value restoreBackupData(jsi::Runtime &rt, jsi::String backupID, jsi::String backupDataKey, jsi::String backupLogDataKey, jsi::String maxVersion) = 0;
   virtual jsi::Value getQRAuthBackupData(jsi::Runtime &rt) = 0;
   virtual jsi::Value retrieveLatestBackupInfo(jsi::Runtime &rt, jsi::String userIdentifier) = 0;
@@ -490,13 +490,13 @@
       return bridging::callFromJs<jsi::Value>(
           rt, &T::createUserKeysBackup, jsInvoker_, instance_, std::move(backupSecret));
     }
-    jsi::Value createFullBackup(jsi::Runtime &rt, jsi::String backupSecret) override {
+    jsi::Value createFullBackup(jsi::Runtime &rt, jsi::String backupSecret, jsi::Function compactionCreationCallback) override {
       static_assert(
-          bridging::getParameterCount(&T::createFullBackup) == 2,
-          "Expected createFullBackup(...) to have 2 parameters");
+          bridging::getParameterCount(&T::createFullBackup) == 3,
+          "Expected createFullBackup(...) to have 3 parameters");
 
       return bridging::callFromJs<jsi::Value>(
-          rt, &T::createFullBackup, jsInvoker_, instance_, std::move(backupSecret));
+          rt, &T::createFullBackup, jsInvoker_, instance_, std::move(backupSecret), std::move(compactionCreationCallback));
     }
     jsi::Value restoreBackupData(jsi::Runtime &rt, jsi::String backupID, jsi::String backupDataKey, jsi::String backupLogDataKey, jsi::String maxVersion) override {
       static_assert(
diff --git a/native/native_rust_library/src/backup.rs b/native/native_rust_library/src/backup.rs
--- a/native/native_rust_library/src/backup.rs
+++ b/native/native_rust_library/src/backup.rs
@@ -37,6 +37,8 @@
 }
 
 pub mod ffi {
+  use std::convert::Infallible;
+
   use super::*;
 
   pub use upload_handler::ffi::*;
@@ -95,9 +97,10 @@
     pickle_key: String,
     pickled_account: String,
     siwe_backup_msg: String,
-    promise_id: u32,
+    compaction_promise_id: u32,
+    upload_promise_id: u32,
   ) {
-    compaction_upload_promises::insert(backup_id.clone(), promise_id);
+    compaction_upload_promises::insert(backup_id.clone(), upload_promise_id);
 
     RUNTIME.spawn(async move {
       let Ok((backup_data_key, backup_log_data_key)) =
@@ -120,10 +123,20 @@
         &backup_log_data_key
       ));
       if let Err(err) = future.await {
+        handle_string_result_as_callback(
+          Err::<String, _>(err.to_string()),
+          compaction_promise_id,
+        );
         handle_backup_creation_error(backup_id.clone(), err.to_string());
         return;
       }
 
+      // resolve compaction creation promise
+      handle_string_result_as_callback(
+        Ok::<_, Infallible>(backup_id),
+        compaction_promise_id,
+      );
+
       trigger_backup_file_upload();
       // The promise will be resolved when the backup is uploaded
     });
diff --git a/native/native_rust_library/src/lib.rs b/native/native_rust_library/src/lib.rs
--- a/native/native_rust_library/src/lib.rs
+++ b/native/native_rust_library/src/lib.rs
@@ -439,7 +439,8 @@
       pickle_key: String,
       pickled_account: String,
       siwe_backup_msg: String,
-      promise_id: u32,
+      compaction_promise_id: u32,
+      upload_promise_id: u32,
     );
 
     #[cxx_name = "createUserKeysBackup"]
diff --git a/native/schema/CommCoreModuleSchema.js b/native/schema/CommCoreModuleSchema.js
--- a/native/schema/CommCoreModuleSchema.js
+++ b/native/schema/CommCoreModuleSchema.js
@@ -159,7 +159,10 @@
   +startBackupHandler: () => void;
   +stopBackupHandler: () => void;
   +createUserKeysBackup: (backupSecret: string) => Promise<string>;
-  +createFullBackup: (backupSecret: string) => Promise<string>;
+  +createFullBackup: (
+    backupSecret: string,
+    compactionCreationCallback: (backupID: string) => void,
+  ) => Promise<string>;
   +restoreBackupData: (
     backupID: string,
     backupDataKey: string,