diff --git a/current.txt b/current.txt
index 5dffdeb..986e0ec 100644
--- a/current.txt
+++ b/current.txt
@@ -202,6 +202,7 @@
 f79edf50a378a9c9bb737f93f205dab91b4c63ea49723afc6f856c138203ea81 android.hardware.radio@1.1::IRadio
 fcc5c8c88b85a9f63fba67d9e674da466c72a98ca287f343fb5721d098713f86 android.hardware.radio@1.1::IRadioIndication
 50f27e8c7ec009d5d4418b2ce8392b940bbf052ecc1d7251285f332485a5ba4e android.hardware.radio@1.1::IRadioResponse
+be981148c95c0089f3ae92854f0e7ae999d308e927db3e065f12a4fabe07852f android.hardware.radio@1.1::ISap
 d8d6bf7b4d36c04ce587df75953c3f723cfbe71c896c1aa8ab6478eae126723d android.hardware.radio@1.1::types
 d8aae01606bfd34bf2fb9a59cadc016f46f318e56cddb8f15a945c5b3c1222bc android.hardware.tetheroffload.config@1.0::IOffloadConfig
 447b00306bc95a7aafec1d660f6f3e9f76ac8bc0353193435e5579ab833da619 android.hardware.tetheroffload.control@1.0::IOffloadControl
diff --git a/radio/1.1/Android.bp b/radio/1.1/Android.bp
index 3583159..3a3f639 100644
--- a/radio/1.1/Android.bp
+++ b/radio/1.1/Android.bp
@@ -7,6 +7,7 @@
         "IRadio.hal",
         "IRadioIndication.hal",
         "IRadioResponse.hal",
+        "ISap.hal",
     ],
 }
 
@@ -22,6 +23,7 @@
         "android/hardware/radio/1.1/RadioAll.cpp",
         "android/hardware/radio/1.1/RadioIndicationAll.cpp",
         "android/hardware/radio/1.1/RadioResponseAll.cpp",
+        "android/hardware/radio/1.1/SapAll.cpp",
     ],
 }
 
@@ -50,6 +52,11 @@
         "android/hardware/radio/1.1/BnHwRadioResponse.h",
         "android/hardware/radio/1.1/BpHwRadioResponse.h",
         "android/hardware/radio/1.1/BsRadioResponse.h",
+        "android/hardware/radio/1.1/ISap.h",
+        "android/hardware/radio/1.1/IHwSap.h",
+        "android/hardware/radio/1.1/BnHwSap.h",
+        "android/hardware/radio/1.1/BpHwSap.h",
+        "android/hardware/radio/1.1/BsSap.h",
     ],
 }
 
diff --git a/radio/1.1/Android.mk b/radio/1.1/Android.mk
index b83ac80..b8aeb4f 100644
--- a/radio/1.1/Android.mk
+++ b/radio/1.1/Android.mk
@@ -364,6 +364,25 @@
 $(GEN): $(LOCAL_PATH)/IRadioResponse.hal
 	$(transform-generated-source)
 LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build ISap.hal
+#
+GEN := $(intermediates)/android/hardware/radio/V1_1/ISap.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/ISap.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.radio@1.1::ISap
+
+$(GEN): $(LOCAL_PATH)/ISap.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
 include $(BUILD_JAVA_LIBRARY)
 
 
@@ -729,6 +748,25 @@
 $(GEN): $(LOCAL_PATH)/IRadioResponse.hal
 	$(transform-generated-source)
 LOCAL_GENERATED_SOURCES += $(GEN)
+
+#
+# Build ISap.hal
+#
+GEN := $(intermediates)/android/hardware/radio/V1_1/ISap.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/ISap.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.radio@1.1::ISap
+
+$(GEN): $(LOCAL_PATH)/ISap.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
 include $(BUILD_STATIC_JAVA_LIBRARY)
 
 
diff --git a/radio/1.1/ISap.hal b/radio/1.1/ISap.hal
new file mode 100644
index 0000000..edcf176
--- /dev/null
+++ b/radio/1.1/ISap.hal
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.radio@1.1;
+
+import @1.0::ISap;
+
+interface ISap extends @1.0::ISap {
+    /**
+     * Empty top level interface.
+     */
+};