diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index d365851..ad9130b 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -1085,16 +1085,6 @@
     return physicalDisplayIds;
 }
 
-status_t SurfaceComposerClient::getPrimaryPhysicalDisplayId(PhysicalDisplayId* id) {
-    int64_t displayId;
-    binder::Status status =
-            ComposerServiceAIDL::getComposerService()->getPrimaryPhysicalDisplayId(&displayId);
-    if (status.isOk()) {
-        *id = *DisplayId::fromValue<PhysicalDisplayId>(static_cast<uint64_t>(displayId));
-    }
-    return statusTFromBinderStatus(status);
-}
-
 std::optional<PhysicalDisplayId> SurfaceComposerClient::getInternalDisplayId() {
     ComposerServiceAIDL& instance = ComposerServiceAIDL::getInstance();
     return instance.getInternalDisplayId();
diff --git a/libs/gui/aidl/android/gui/ISurfaceComposer.aidl b/libs/gui/aidl/android/gui/ISurfaceComposer.aidl
index 730d758..3c220fc 100644
--- a/libs/gui/aidl/android/gui/ISurfaceComposer.aidl
+++ b/libs/gui/aidl/android/gui/ISurfaceComposer.aidl
@@ -94,8 +94,6 @@
      */
     long[] getPhysicalDisplayIds();
 
-    long getPrimaryPhysicalDisplayId();
-
     /**
      * Get token for a physical display given its stable ID obtained via getPhysicalDisplayIds or
      * a DisplayEventReceiver hotplug event.
diff --git a/libs/gui/fuzzer/libgui_fuzzer_utils.h b/libs/gui/fuzzer/libgui_fuzzer_utils.h
index 98e2ea3..d17ce4a 100644
--- a/libs/gui/fuzzer/libgui_fuzzer_utils.h
+++ b/libs/gui/fuzzer/libgui_fuzzer_utils.h
@@ -71,7 +71,6 @@
                 (override));
     MOCK_METHOD(binder::Status, destroyDisplay, (const sp<IBinder>&), (override));
     MOCK_METHOD(binder::Status, getPhysicalDisplayIds, (std::vector<int64_t>*), (override));
-    MOCK_METHOD(binder::Status, getPrimaryPhysicalDisplayId, (int64_t*), (override));
     MOCK_METHOD(binder::Status, getPhysicalDisplayToken, (int64_t, sp<IBinder>*), (override));
     MOCK_METHOD(binder::Status, setPowerMode, (const sp<IBinder>&, int), (override));
     MOCK_METHOD(binder::Status, getSupportedFrameTimestamps, (std::vector<FrameEvent>*),
diff --git a/libs/gui/include/gui/SurfaceComposerClient.h b/libs/gui/include/gui/SurfaceComposerClient.h
index d5f4414..27a44a4 100644
--- a/libs/gui/include/gui/SurfaceComposerClient.h
+++ b/libs/gui/include/gui/SurfaceComposerClient.h
@@ -349,7 +349,6 @@
 
     //! Get stable IDs for connected physical displays
     static std::vector<PhysicalDisplayId> getPhysicalDisplayIds();
-    static status_t getPrimaryPhysicalDisplayId(PhysicalDisplayId*);
     static std::optional<PhysicalDisplayId> getInternalDisplayId();
 
     //! Get token for a physical display given its stable ID
diff --git a/libs/gui/tests/Surface_test.cpp b/libs/gui/tests/Surface_test.cpp
index 391a0aa..71f2ad4 100644
--- a/libs/gui/tests/Surface_test.cpp
+++ b/libs/gui/tests/Surface_test.cpp
@@ -745,10 +745,6 @@
         return binder::Status::ok();
     }
 
-    binder::Status getPrimaryPhysicalDisplayId(int64_t* /*outDisplayId*/) override {
-        return binder::Status::ok();
-    }
-
     binder::Status getPhysicalDisplayToken(int64_t /*displayId*/,
                                            sp<IBinder>* /*outDisplay*/) override {
         return binder::Status::ok();
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 215f083..24aed17 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -607,12 +607,6 @@
     return displayIds;
 }
 
-status_t SurfaceFlinger::getPrimaryPhysicalDisplayId(PhysicalDisplayId* id) const {
-    Mutex::Autolock lock(mStateLock);
-    *id = getPrimaryDisplayIdLocked();
-    return NO_ERROR;
-}
-
 sp<IBinder> SurfaceFlinger::getPhysicalDisplayToken(PhysicalDisplayId displayId) const {
     Mutex::Autolock lock(mStateLock);
     return getPhysicalDisplayTokenLocked(displayId);
@@ -7230,20 +7224,6 @@
     return binder::Status::ok();
 }
 
-binder::Status SurfaceComposerAIDL::getPrimaryPhysicalDisplayId(int64_t* outDisplayId) {
-    status_t status = checkAccessPermission();
-    if (status != OK) {
-        return binderStatusFromStatusT(status);
-    }
-
-    PhysicalDisplayId id;
-    status = mFlinger->getPrimaryPhysicalDisplayId(&id);
-    if (status == NO_ERROR) {
-        *outDisplayId = id.value;
-    }
-    return binderStatusFromStatusT(status);
-}
-
 binder::Status SurfaceComposerAIDL::getPhysicalDisplayToken(int64_t displayId,
                                                             sp<IBinder>* outDisplay) {
     const auto id = DisplayId::fromValue<PhysicalDisplayId>(static_cast<uint64_t>(displayId));
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 46d941f..39277aa 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -524,7 +524,6 @@
         Mutex::Autolock lock(mStateLock);
         return getPhysicalDisplayIdsLocked();
     }
-    status_t getPrimaryPhysicalDisplayId(PhysicalDisplayId*) const EXCLUDES(mStateLock);
 
     sp<IBinder> getPhysicalDisplayToken(PhysicalDisplayId displayId) const;
     status_t setTransactionState(const FrameTimelineInfo& frameTimelineInfo,
@@ -1420,7 +1419,6 @@
                                  sp<IBinder>* outDisplay) override;
     binder::Status destroyDisplay(const sp<IBinder>& display) override;
     binder::Status getPhysicalDisplayIds(std::vector<int64_t>* outDisplayIds) override;
-    binder::Status getPrimaryPhysicalDisplayId(int64_t* outDisplayId) override;
     binder::Status getPhysicalDisplayToken(int64_t displayId, sp<IBinder>* outDisplay) override;
     binder::Status setPowerMode(const sp<IBinder>& display, int mode) override;
     binder::Status getSupportedFrameTimestamps(std::vector<FrameEvent>* outSupported) override;