diff --git a/libs/binder/RpcState.cpp b/libs/binder/RpcState.cpp
index 5046253..26a2f4f 100644
--- a/libs/binder/RpcState.cpp
+++ b/libs/binder/RpcState.cpp
@@ -20,7 +20,6 @@
 
 #include <android-base/macros.h>
 #include <android-base/scopeguard.h>
-#include <android-base/stringprintf.h>
 #include <binder/BpBinder.h>
 #include <binder/IPCThreadState.h>
 #include <binder/RpcServer.h>
@@ -30,6 +29,7 @@
 #include "Utils.h"
 
 #include <random>
+#include <sstream>
 
 #include <inttypes.h>
 
@@ -39,8 +39,6 @@
 
 namespace android {
 
-using base::StringPrintf;
-
 #if RPC_FLAKE_PRONE
 void rpcMaybeWaitToFlake() {
     [[clang::no_destroy]] static std::random_device r;
@@ -329,8 +327,10 @@
         desc = "(not promotable)";
     }
 
-    return StringPrintf("node{%p times sent: %zu times recd: %zu type: %s}",
-                        this->binder.unsafe_get(), this->timesSent, this->timesRecd, desc);
+    std::stringstream ss;
+    ss << "node{" << intptr_t(this->binder.unsafe_get()) << " times sent: " << this->timesSent
+       << " times recd: " << this->timesRecd << " type: " << desc << "}";
+    return ss.str();
 }
 
 RpcState::CommandData::CommandData(size_t size) : mSize(size) {
@@ -1220,10 +1220,11 @@
     uint32_t protocolVersion = session->getProtocolVersion().value();
     if (protocolVersion < RPC_WIRE_PROTOCOL_VERSION_RPC_HEADER_FEATURE_EXPLICIT_PARCEL_SIZE &&
         !rpcFields->mObjectPositions.empty()) {
-        *errorMsg = StringPrintf("Parcel has attached objects but the session's protocol version "
-                                 "(%" PRIu32 ") is too old, must be at least %" PRIu32,
-                                 protocolVersion,
-                                 RPC_WIRE_PROTOCOL_VERSION_RPC_HEADER_FEATURE_EXPLICIT_PARCEL_SIZE);
+        std::stringstream ss;
+        ss << "Parcel has attached objects but the session's protocol version (" << protocolVersion
+           << ") is too old, must be at least "
+           << RPC_WIRE_PROTOCOL_VERSION_RPC_HEADER_FEATURE_EXPLICIT_PARCEL_SIZE;
+        *errorMsg = ss.str();
         return BAD_VALUE;
     }
 
@@ -1236,9 +1237,10 @@
             case RpcSession::FileDescriptorTransportMode::UNIX: {
                 constexpr size_t kMaxFdsPerMsg = 253;
                 if (rpcFields->mFds->size() > kMaxFdsPerMsg) {
-                    *errorMsg = StringPrintf("Too many file descriptors in Parcel for unix "
-                                             "domain socket: %zu (max is %zu)",
-                                             rpcFields->mFds->size(), kMaxFdsPerMsg);
+                    std::stringstream ss;
+                    ss << "Too many file descriptors in Parcel for unix domain socket: "
+                       << rpcFields->mFds->size() << " (max is " << kMaxFdsPerMsg << ")";
+                    *errorMsg = ss.str();
                     return BAD_VALUE;
                 }
                 break;
@@ -1249,9 +1251,10 @@
                 // available on Android
                 constexpr size_t kMaxFdsPerMsg = 8;
                 if (rpcFields->mFds->size() > kMaxFdsPerMsg) {
-                    *errorMsg = StringPrintf("Too many file descriptors in Parcel for Trusty "
-                                             "IPC connection: %zu (max is %zu)",
-                                             rpcFields->mFds->size(), kMaxFdsPerMsg);
+                    std::stringstream ss;
+                    ss << "Too many file descriptors in Parcel for Trusty IPC connection: "
+                       << rpcFields->mFds->size() << " (max is " << kMaxFdsPerMsg << ")";
+                    *errorMsg = ss.str();
                     return BAD_VALUE;
                 }
                 break;
diff --git a/libs/binder/servicedispatcher.cpp b/libs/binder/servicedispatcher.cpp
index 5bf9680..f2693dd 100644
--- a/libs/binder/servicedispatcher.cpp
+++ b/libs/binder/servicedispatcher.cpp
@@ -22,7 +22,6 @@
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/properties.h>
-#include <android-base/stringprintf.h>
 #include <android/debug/BnAdbCallback.h>
 #include <android/debug/IAdbManager.h>
 #include <android/os/BnServiceManager.h>
@@ -46,7 +45,6 @@
 using android::base::LogId;
 using android::base::LogSeverity;
 using android::base::StdioLogger;
-using android::base::StringPrintf;
 using std::string_view_literals::operator""sv;
 
 namespace {
@@ -57,11 +55,12 @@
 
 int Usage(const char* program) {
     auto basename = Basename(program);
-    auto format = R"(dispatch calls to RPC service.
+    // clang-format off
+    LOG(ERROR) << R"(dispatch calls to RPC service.
 Usage:
-  %s [-g] [-i <ip_address>] <service_name>
+  )" << basename << R"( [-g] [-i <ip_address>] <service_name>
     <service_name>: the service to connect to.
-  %s [-g] manager
+  )" << basename << R"( [-g] manager
     Runs an RPC-friendly service that redirects calls to servicemanager.
 
   -g: use getService() instead of checkService().
@@ -71,7 +70,7 @@
   blocks until killed.
   Otherwise, writes error message to stderr and exits with non-zero code.
 )";
-    LOG(ERROR) << StringPrintf(format, basename.c_str(), basename.c_str());
+    // clang-format on
     return EX_USAGE;
 }
 
diff --git a/libs/binder/tests/binderRpcTest.cpp b/libs/binder/tests/binderRpcTest.cpp
index 1340ea1..bc34d4c 100644
--- a/libs/binder/tests/binderRpcTest.cpp
+++ b/libs/binder/tests/binderRpcTest.cpp
@@ -18,7 +18,6 @@
 // only used on NDK tests outside of vendor
 #include <aidl/IBinderRpcTest.h>
 #endif
-#include <android-base/stringprintf.h>
 
 #include <chrono>
 #include <cstdlib>
@@ -59,12 +58,12 @@
 
 static std::string WaitStatusToString(int wstatus) {
     if (WIFEXITED(wstatus)) {
-        return base::StringPrintf("exit status %d", WEXITSTATUS(wstatus));
+        return std::format("exit status {}", WEXITSTATUS(wstatus));
     }
     if (WIFSIGNALED(wstatus)) {
-        return base::StringPrintf("term signal %d", WTERMSIG(wstatus));
+        return std::format("term signal {}", WTERMSIG(wstatus));
     }
-    return base::StringPrintf("unexpected state %d", wstatus);
+    return std::format("unexpected state {}", wstatus);
 }
 
 static void debugBacktrace(pid_t pid) {
@@ -260,9 +259,9 @@
     bool noKernel = GetParam().noKernel;
 
     std::string path = android::base::GetExecutableDirectory();
-    auto servicePath = android::base::StringPrintf("%s/binder_rpc_test_service%s%s", path.c_str(),
-                                                   singleThreaded ? "_single_threaded" : "",
-                                                   noKernel ? "_no_kernel" : "");
+    auto servicePath =
+            std::format("{}/binder_rpc_test_service{}{}", path,
+                        singleThreaded ? "_single_threaded" : "", noKernel ? "_no_kernel" : "");
 
     base::unique_fd bootstrapClientFd, socketFd;
 
diff --git a/libs/binder/tests/binderRpcTestCommon.h b/libs/binder/tests/binderRpcTestCommon.h
index eceff35..786fab8 100644
--- a/libs/binder/tests/binderRpcTestCommon.h
+++ b/libs/binder/tests/binderRpcTestCommon.h
@@ -22,7 +22,6 @@
 #include <BnBinderRpcCallback.h>
 #include <BnBinderRpcSession.h>
 #include <BnBinderRpcTest.h>
-#include <android-base/stringprintf.h>
 #include <binder/Binder.h>
 #include <binder/BpBinder.h>
 #include <binder/IPCThreadState.h>
@@ -58,6 +57,7 @@
 #include "../BuildFlags.h"
 #include "../FdTrigger.h"
 #include "../RpcState.h" // for debugging
+#include "format.h"
 #include "utils/Errors.h"
 
 namespace android {
@@ -91,7 +91,7 @@
 }
 
 static inline std::string trustyIpcPort(uint32_t serverVersion) {
-    return base::StringPrintf("com.android.trusty.binderRpcTestService.V%" PRIu32, serverVersion);
+    return std::format("com.android.trusty.binderRpcTestService.V{}", serverVersion);
 }
 
 enum class SocketType {
diff --git a/libs/binder/tests/binderRpcTestServiceTrusty.cpp b/libs/binder/tests/binderRpcTestServiceTrusty.cpp
index cb632e9..aaca8d0 100644
--- a/libs/binder/tests/binderRpcTestServiceTrusty.cpp
+++ b/libs/binder/tests/binderRpcTestServiceTrusty.cpp
@@ -16,7 +16,6 @@
 
 #define TLOG_TAG "binderRpcTestService"
 
-#include <android-base/stringprintf.h>
 #include <binder/RpcServerTrusty.h>
 #include <inttypes.h>
 #include <lib/tipc/tipc.h>
@@ -28,7 +27,6 @@
 #include "binderRpcTestCommon.h"
 
 using namespace android;
-using android::base::StringPrintf;
 using binder::Status;
 
 static int gConnectionCounter = 0;
diff --git a/libs/binder/tests/binderRpcTestTrusty.cpp b/libs/binder/tests/binderRpcTestTrusty.cpp
index fcb83bd..8acaae6 100644
--- a/libs/binder/tests/binderRpcTestTrusty.cpp
+++ b/libs/binder/tests/binderRpcTestTrusty.cpp
@@ -16,7 +16,6 @@
 
 #define LOG_TAG "binderRpcTest"
 
-#include <android-base/stringprintf.h>
 #include <binder/RpcTransportTipcTrusty.h>
 #include <trusty-gtest.h>
 #include <trusty_ipc.h>
diff --git a/libs/binder/tests/format.h b/libs/binder/tests/format.h
new file mode 100644
index 0000000..b5440a4
--- /dev/null
+++ b/libs/binder/tests/format.h
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2023 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.
+ */
+
+// TODO(b/302723053): remove this header and replace with <format> once b/175635923 is done
+// ETA for this blocker is 2023-10-27~2023-11-10.
+// Also, remember to remove fmtlib's format.cc from trusty makefiles.
+
+#if __has_include(<format>)
+#include <format>
+#else
+#include <fmt/format.h>
+
+namespace std {
+using fmt::format;
+}
+#endif
\ No newline at end of file
diff --git a/libs/binder/trusty/binderRpcTest/rules.mk b/libs/binder/trusty/binderRpcTest/rules.mk
index 975f689..e46ccfb 100644
--- a/libs/binder/trusty/binderRpcTest/rules.mk
+++ b/libs/binder/trusty/binderRpcTest/rules.mk
@@ -21,6 +21,7 @@
 MANIFEST := $(LOCAL_DIR)/manifest.json
 
 MODULE_SRCS += \
+	$(FMTLIB_DIR)/src/format.cc \
 	$(LIBBINDER_TESTS_DIR)/binderRpcUniversalTests.cpp \
 	$(LIBBINDER_TESTS_DIR)/binderRpcTestCommon.cpp \
 	$(LIBBINDER_TESTS_DIR)/binderRpcTestTrusty.cpp \
diff --git a/libs/binder/trusty/binderRpcTest/service/rules.mk b/libs/binder/trusty/binderRpcTest/service/rules.mk
index 5d1a51d..50ae3d2 100644
--- a/libs/binder/trusty/binderRpcTest/service/rules.mk
+++ b/libs/binder/trusty/binderRpcTest/service/rules.mk
@@ -21,6 +21,7 @@
 MANIFEST := $(LOCAL_DIR)/manifest.json
 
 MODULE_SRCS := \
+	$(FMTLIB_DIR)/src/format.cc \
 	$(LIBBINDER_TESTS_DIR)/binderRpcTestCommon.cpp \
 	$(LIBBINDER_TESTS_DIR)/binderRpcTestServiceTrusty.cpp \