diff --git a/device-cheetah.mk b/device-cheetah.mk
index 9a2600a..b604573 100644
--- a/device-cheetah.mk
+++ b/device-cheetah.mk
@@ -343,6 +343,11 @@ PRODUCT_VENDOR_PROPERTIES += \
 PRODUCT_PROPERTY_OVERRIDES += \
 	persist.vendor.audio.cca.enabled=false
 
+# The default value of this variable is false and should only be set to true when
+# the device allows users to enable the seamless transfer feature.
+PRODUCT_PRODUCT_PROPERTIES += \
+   euicc.seamless_transfer_enabled_in_non_qs=true
+
 # Device features
 PRODUCT_COPY_FILES += \
     frameworks/native/data/etc/handheld_core_hardware.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/handheld_core_hardware.xml
diff --git a/device-cloudripper.mk b/device-cloudripper.mk
index 1582fe1..447bf2a 100644
--- a/device-cloudripper.mk
+++ b/device-cloudripper.mk
@@ -26,6 +26,7 @@ include device/google/gs201/device-shipping-common.mk
 include device/google/pantah/audio/cloudripper/audio-tables.mk
 include hardware/google/pixel/vibrator/cs40l26/device.mk
 include device/google/gs-common/bcmbt/bluetooth.mk
+include device/google/gs-common/touch/syna/syna.mk
 
 # go/lyric-soong-variables
 $(call soong_config_set,lyric,camera_hardware,cloudripper)
diff --git a/device-panther.mk b/device-panther.mk
index ea9f44d..94f88c6 100644
--- a/device-panther.mk
+++ b/device-panther.mk
@@ -326,6 +326,11 @@ PRODUCT_VENDOR_PROPERTIES += \
 PRODUCT_PROPERTY_OVERRIDES += \
 	persist.vendor.audio.cca.enabled=false
 
+# The default value of this variable is false and should only be set to true when
+# the device allows users to enable the seamless transfer feature.
+PRODUCT_PRODUCT_PROPERTIES += \
+   euicc.seamless_transfer_enabled_in_non_qs=true
+
 # Device features
 PRODUCT_COPY_FILES += \
     frameworks/native/data/etc/handheld_core_hardware.xml:$(TARGET_COPY_OUT_VENDOR)/etc/permissions/handheld_core_hardware.xml
diff --git a/device-ravenclaw.mk b/device-ravenclaw.mk
index eb00889..2fcef30 100644
--- a/device-ravenclaw.mk
+++ b/device-ravenclaw.mk
@@ -26,6 +26,7 @@ include device/google/gs201/device-shipping-common.mk
 include device/google/pantah/audio/ravenclaw/audio-tables.mk
 include hardware/google/pixel/vibrator/cs40l26/device.mk
 include device/google/gs-common/bcmbt/bluetooth.mk
+include device/google/gs-common/touch/syna/syna.mk
 
 ifeq ($(filter factory_ravenclaw, $(TARGET_PRODUCT)),)
 include device/google/gs101/uwb/uwb.mk