diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5a11806..1ea675b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,22 +6,27 @@ bump may contain breaking changes, and each one is listed below.
 
 ## [Unreleased]
 
+## [0.7.1] - 2026-09-08
+
 ### Fixed
 
-- Disabling speakerphone now removes `defaultToSpeaker` before clearing the
-  output override, allowing audio to return to the receiver. Failed speaker
+- Speakerphone uses a temporary output override, without `defaultToSpeaker`,
+  allowing both the host button and CallKit to return audio to the receiver. Failed speaker
   changes restore the previous preference; an override failure also attempts
   to restore the category configuration.
 - Connecting headphones during a call no longer forces audio back to the
-  speaker. A saved speaker preference is restored on `oldDeviceUnavailable`,
-  rather than on every route change.
+  speaker. An explicit system route selection updates the saved speaker preference.
+  Recovery is limited to `oldDeviceUnavailable` and never overrides an external output.
 
 ### Changed
 
-- The audio category includes `defaultToSpeaker` only while speakerphone is
-  requested. Hosts that never call `setSpeakerEnabled` no longer receive this
-  category option. CallKit controls activation and initial routing; the normal
-  built-in route remains the receiver when no external device is selected.
+- The audio category no longer includes `defaultToSpeaker`. Hosts should use
+  `setSpeakerEnabled` for the initial speaker route; CallKit controls activation.
+- Added regression coverage for CallKit speaker/receiver selections, headset
+  selection and receiver-compatible category configuration.
+
+Physical-device verification of 0.7.1 is pending; simulator audio tests cannot
+confirm actual earpiece/speaker playback on an iPhone.
 
 ## [0.7.0] - 2026-09-07
 
diff --git a/CallWaveKit.podspec b/CallWaveKit.podspec
index a5e1342..e350d5c 100644
--- a/CallWaveKit.podspec
+++ b/CallWaveKit.podspec
@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
   spec.name = 'CallWaveKit'
-  spec.version = '0.7.0'
+  spec.version = '0.7.1'
   spec.summary = 'Incoming SIP SDK for iOS intercoms.'
   spec.description = <<-DESC
     CallWaveKit owns a PJSUA runtime, SIP registration, incoming audio calls,
diff --git a/CallWaveKit/CallWaveAudioSessionCoordinator.h b/CallWaveKit/CallWaveAudioSessionCoordinator.h
index 6b6258b..356fcc2 100644
--- a/CallWaveKit/CallWaveAudioSessionCoordinator.h
+++ b/CallWaveKit/CallWaveAudioSessionCoordinator.h
@@ -50,7 +50,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nonatomic, assign) BOOL audioSessionActive;
 
 /// The user's speaker choice. Survives route losses and session reactivation;
-/// only `-setSpeakerEnabled:error:` changes it.
+/// updated by the API and by system route selections (including CallKit).
 @property (nonatomic, assign) BOOL desiredSpeakerEnabled;
 
 @property (nonatomic, strong, readonly) CallWaveAudioRoute *currentAudioRoute;
diff --git a/CallWaveKit/CallWaveAudioSessionCoordinator.m b/CallWaveKit/CallWaveAudioSessionCoordinator.m
index f97cf0c..2e40606 100644
--- a/CallWaveKit/CallWaveAudioSessionCoordinator.m
+++ b/CallWaveKit/CallWaveAudioSessionCoordinator.m
@@ -109,9 +109,7 @@ - (BOOL)configureAudioSessionWithError:(NSError **)error {
         // Renamed to …AllowBluetoothHFP in the iOS 26 SDK; same raw value.
         AVAudioSessionCategoryOptionAllowBluetooth;
 #endif
-    if (self.desiredSpeakerEnabled) {
-        options |= AVAudioSessionCategoryOptionDefaultToSpeaker;
-    }
+
     if ([session setCategory:AVAudioSessionCategoryPlayAndRecord
                         mode:AVAudioSessionModeVoiceChat
                      options:options
@@ -219,17 +217,35 @@ - (BOOL)setSpeakerEnabled:(BOOL)enabled error:(NSError **)error {
 
 #pragma mark - AVAudioSession notifications
 
+- (CallWaveAudioRoute *)readCurrentAudioRoute {
+    return [CallWaveAudioRoute routeForAudioSession:AVAudioSession.sharedInstance];
+}
+
+- (BOOL)restoreSpeakerWithError:(NSError **)error {
+    return [AVAudioSession.sharedInstance overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker
+                                                           error:error];
+}
+
 - (void)handleRouteChangeNotification:(NSNotification *)notification {
+    CallWaveAudioRoute *route = [self readCurrentAudioRoute];
     AVAudioSessionRouteChangeReason reason =
         [notification.userInfo[AVAudioSessionRouteChangeReasonKey] unsignedIntegerValue];
-    CallWaveAudioRoute *route =
-        [CallWaveAudioRoute routeForAudioSession:AVAudioSession.sharedInstance];
-    // Let newly connected headphones take over; restore the preference on removal.
-    if (reason == AVAudioSessionRouteChangeReasonOldDeviceUnavailable &&
-        self.desiredSpeakerEnabled && !route.isSpeakerActive) {
+    BOOL externalOutput = NO;
+    for (NSString *port in route.outputPortTypes) {
+        if (![port isEqualToString:AVAudioSessionPortBuiltInSpeaker] &&
+            ![port isEqualToString:AVAudioSessionPortBuiltInReceiver]) {
+            externalOutput = YES;
+        }
+    }
+    // CallKit's speaker button changes AVAudioSession directly. Treat that
+    // override (and a newly selected accessory) as the user's new preference.
+    // Restoring our old preference here would immediately undo their action.
+    if (reason == AVAudioSessionRouteChangeReasonOverride || externalOutput) {
+        self.desiredSpeakerEnabled = route.isSpeakerActive;
+    } else if (self.desiredSpeakerEnabled && !route.isSpeakerActive &&
+               reason == AVAudioSessionRouteChangeReasonOldDeviceUnavailable) {
         NSError *error = nil;
-        [AVAudioSession.sharedInstance overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker
-                                                         error:&error];
+        [self restoreSpeakerWithError:&error];
         if (error != nil) {
             CWLogWarning(CallWaveLogCategoryAudio,
                          @"could not restore the speaker after a route change: %@", error);
diff --git a/FIELD-TESTING.md b/FIELD-TESTING.md
index 0afdb59..c712071 100644
--- a/FIELD-TESTING.md
+++ b/FIELD-TESTING.md
@@ -9,6 +9,15 @@ done by hand, on a device, against an intercom.
 Run it before tagging a release, and after any change to the answer path, the
 push path, the audio session or the registration lifecycle.
 
+## 0.7.1 run record
+
+Physical-device pass: **not run**. The release is authorized to deliver the
+speaker-routing fix for another on-device QA run. Automated audio regression
+coverage includes system speaker/receiver selection and headset selection.
+Verify CallKit Speaker on/off repeatedly, repeat from the app, then interrupt
+and resume the call and connect/disconnect a headset. Confirm actual playback,
+not only the selected button.
+
 ## 0.4.0 release record
 
 On 2026-08-04 the maintainer confirmed registration and a real incoming call
diff --git a/README.md b/README.md
index 1dc1a46..4546d6b 100644
--- a/README.md
+++ b/README.md
@@ -36,13 +36,13 @@ not grant or transfer a proprietary PJSIP licence.
 ### Swift Package Manager
 
 In Xcode: **File → Add Package Dependencies**, enter
-`https://github.com/PetrShtuka/CallWaveKit.git`, pick version `0.7.0` or later,
+`https://github.com/PetrShtuka/CallWaveKit.git`, pick version `0.7.1` or later,
 and add the `CallWaveKit` product to your application target.
 
 Or in a `Package.swift`:
 
 ```swift
-.package(url: "https://github.com/PetrShtuka/CallWaveKit.git", from: "0.7.0")
+.package(url: "https://github.com/PetrShtuka/CallWaveKit.git", from: "0.7.1")
 ```
 
 The product vends two modules: `CallWaveKit` (the Objective-C API) and
@@ -63,7 +63,7 @@ To track the repository directly instead of the published pod — an unreleased
 fix, say — point at the tag:
 
 ```ruby
-pod 'CallWaveKit', git: 'https://github.com/PetrShtuka/CallWaveKit.git', tag: '0.7.0'
+pod 'CallWaveKit', git: 'https://github.com/PetrShtuka/CallWaveKit.git', tag: '0.7.1'
 ```
 
 ## Host application settings
@@ -215,7 +215,7 @@ SwiftPM releases use an immutable binary asset so package consumers do not
 download the 21 MB framework through Git history. To package a rebuilt binary:
 
 ```sh
-./Scripts/package-pjsip-release.sh 0.7.0
+./Scripts/package-pjsip-release.sh 0.7.1
 ```
 
 The script prints the archive checksum and the `.binaryTarget(url:checksum:)`
diff --git a/RELEASING.md b/RELEASING.md
index 040f22f..060e031 100644
--- a/RELEASING.md
+++ b/RELEASING.md
@@ -68,7 +68,7 @@ CocoaPods fail with a version mismatch, because `spec.source` resolves
 ### 3. Tag
 
 ```sh
-RELEASE_VERSION=0.7.0
+RELEASE_VERSION=0.7.1
 git checkout main
 git pull
 git tag -a "$RELEASE_VERSION" -m "CallWaveKit $RELEASE_VERSION"
diff --git a/Scripts/package-pjsip-release.sh b/Scripts/package-pjsip-release.sh
index 63884d5..8683116 100755
--- a/Scripts/package-pjsip-release.sh
+++ b/Scripts/package-pjsip-release.sh
@@ -6,8 +6,8 @@
 # checkout pays for it, so a tagged release should attach the zip instead and
 # Package.swift should point at that URL:
 #
-#   ./Scripts/package-pjsip-release.sh 0.7.0
-#   gh release upload 0.7.0 build/PJSIP.xcframework.zip
+#   ./Scripts/package-pjsip-release.sh 0.7.1
+#   gh release upload 0.7.1 build/PJSIP.xcframework.zip
 #
 # Then replace the `path:` binary target in Package.swift with the printed
 # `url:`/`checksum:` pair. Keep the local `path:` variant on a branch you
diff --git a/Tests/CallWaveKitRegistryTests/CallWaveAudioReliabilityTests.m b/Tests/CallWaveKitRegistryTests/CallWaveAudioReliabilityTests.m
index c00e61e..2769bc8 100644
--- a/Tests/CallWaveKitRegistryTests/CallWaveAudioReliabilityTests.m
+++ b/Tests/CallWaveKitRegistryTests/CallWaveAudioReliabilityTests.m
@@ -4,6 +4,7 @@
 #import "CallWaveClient.h"
 #import "CallWaveCallRegistry.h"
 #import "CallWaveAudioRouteInternal.h"
+#import "CallWaveAudioSessionCoordinator.h"
 
 // Private entry points are redeclared here so the tests can drive the audio
 // coordinator paths without changing the public API. `registry`,
@@ -19,11 +20,71 @@ - (void)audioSessionRouteDidChange:(NSNotification *)notification;
 - (void)audioMediaServicesWereReset:(NSNotification *)notification;
 @end
 
+
+@interface CallWaveTestAudioCoordinator : CallWaveAudioSessionCoordinator
+@property (nonatomic, strong) CallWaveAudioRoute *testRoute;
+@property (nonatomic, assign) NSUInteger restoreCount;
+@end
+@implementation CallWaveTestAudioCoordinator
+- (CallWaveAudioRoute *)readCurrentAudioRoute { return self.testRoute; }
+- (BOOL)restoreSpeakerWithError:(NSError **)error {
+    self.restoreCount += 1;
+    return YES;
+}
+@end
+
 @interface CallWaveAudioReliabilityTests : XCTestCase
 @end
 
 @implementation CallWaveAudioReliabilityTests
 
+
+- (void)testCallKitReceiverSelectionDoesNotRestoreSpeaker {
+    CallWaveTestAudioCoordinator *audio = [CallWaveTestAudioCoordinator new];
+    audio.desiredSpeakerEnabled = YES;
+    audio.testRoute = [[CallWaveAudioRoute alloc]
+        initWithInputPortTypes:@[AVAudioSessionPortBuiltInMic]
+        outputPortTypes:@[AVAudioSessionPortBuiltInReceiver]];
+    [audio handleRouteChangeNotification:[NSNotification
+        notificationWithName:AVAudioSessionRouteChangeNotification object:nil
+        userInfo:@{AVAudioSessionRouteChangeReasonKey: @(AVAudioSessionRouteChangeReasonOverride)}]];
+    XCTAssertFalse(audio.desiredSpeakerEnabled);
+    XCTAssertEqual(audio.restoreCount, 0u);
+}
+
+- (void)testCallKitSpeakerSelectionUpdatesPreference {
+    CallWaveTestAudioCoordinator *audio = [CallWaveTestAudioCoordinator new];
+    audio.testRoute = [[CallWaveAudioRoute alloc]
+        initWithInputPortTypes:@[AVAudioSessionPortBuiltInMic]
+        outputPortTypes:@[AVAudioSessionPortBuiltInSpeaker]];
+    [audio handleRouteChangeNotification:[NSNotification
+        notificationWithName:AVAudioSessionRouteChangeNotification object:nil
+        userInfo:@{AVAudioSessionRouteChangeReasonKey: @(AVAudioSessionRouteChangeReasonOverride)}]];
+    XCTAssertTrue(audio.desiredSpeakerEnabled);
+    XCTAssertEqual(audio.restoreCount, 0u);
+}
+
+- (void)testSelectingHeadsetDoesNotRestoreSpeaker {
+    CallWaveTestAudioCoordinator *audio = [CallWaveTestAudioCoordinator new];
+    audio.desiredSpeakerEnabled = YES;
+    audio.testRoute = [[CallWaveAudioRoute alloc]
+        initWithInputPortTypes:@[AVAudioSessionPortBluetoothHFP]
+        outputPortTypes:@[AVAudioSessionPortBluetoothHFP]];
+    [audio handleRouteChangeNotification:[NSNotification
+        notificationWithName:AVAudioSessionRouteChangeNotification object:nil
+        userInfo:@{AVAudioSessionRouteChangeReasonKey: @(AVAudioSessionRouteChangeReasonNewDeviceAvailable)}]];
+    XCTAssertFalse(audio.desiredSpeakerEnabled);
+    XCTAssertEqual(audio.restoreCount, 0u);
+}
+
+- (void)testConfigurationAllowsReturningToReceiver {
+    CallWaveAudioSessionCoordinator *audio = [CallWaveAudioSessionCoordinator new];
+    NSError *error = nil;
+    XCTAssertTrue([audio configureAudioSessionWithError:&error], @"%@", error);
+    XCTAssertEqual(AVAudioSession.sharedInstance.categoryOptions &
+                   AVAudioSessionCategoryOptionDefaultToSpeaker, 0u);
+}
+
 - (CallWaveClient *)makeClient {
     return [[CallWaveClient alloc] initWithConfiguration:nil
                                                  options:CallWaveIntegrationOptionNone