diff --git a/src/core/hle/service/apt/apt.cpp b/src/core/hle/service/apt/apt.cpp
index b364beed9..3dd46c08c 100644
--- a/src/core/hle/service/apt/apt.cpp
+++ b/src/core/hle/service/apt/apt.cpp
@@ -19,6 +19,8 @@
 #include "core/hle/kernel/shared_memory.h"
 #include "core/hle/kernel/thread.h"
 
+#include "core/hle/service/ptm/ptm.h"
+
 namespace Service {
 namespace APT {
 
@@ -327,6 +329,23 @@ void GetAppCpuTimeLimit(Service::Interface* self) {
     LOG_WARNING(Service_APT, "(STUBBED) called value=%u", value);
 }
 
+void Unknown_0x01010000(Service::Interface* self){
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+
+    cmd_buff[1] = RESULT_SUCCESS.raw;
+
+    // When a certain NS state field (internal NS state in .data/.bss.) is non-zero, the output value is zero
+    // If/Else is to indicate that a check should occur here.
+    if (false){
+        cmd_buff[2] = 0;
+    }
+    else{
+        cmd_buff[2] = PTM::CheckNew3DS();
+    }
+
+    LOG_WARNING(Service_APT, "(STUBBED) does not check internal NS state field");
+}
+
 void PrepareToStartLibraryApplet(Service::Interface* self) {
     u32* cmd_buff = Kernel::GetCommandBuffer();
     AppletId applet_id = static_cast<AppletId>(cmd_buff[1]);
diff --git a/src/core/hle/service/apt/apt.h b/src/core/hle/service/apt/apt.h
index 72972d05b..f8d19ded6 100644
--- a/src/core/hle/service/apt/apt.h
+++ b/src/core/hle/service/apt/apt.h
@@ -299,6 +299,15 @@ void PrepareToStartLibraryApplet(Service::Interface* self);
  */
 void StartLibraryApplet(Service::Interface* self);
 
+/**
+* From 3Ds Brew:
+*	This writes an output u8 to cmdreply indexword[2].
+*	This uses PTMSYSM:CheckNew3DS.
+*	When a certain NS state field (internal NS state in .data/.bss.) is non-zero, the output value is zero, otherwise the output is from PTMSYSM:CheckNew3DS. 
+*	Normally this NS state field is zero, however this state field is set to 1 when APT:PrepareToStartApplication is used with flags bit8 is set.
+*/
+void Unknown_0x01010000(Service::Interface* self);
+
 /// Initialize the APT service
 void Init();
 
diff --git a/src/core/hle/service/apt/apt_a.cpp b/src/core/hle/service/apt/apt_a.cpp
index 88de339f9..db900ed88 100644
--- a/src/core/hle/service/apt/apt_a.cpp
+++ b/src/core/hle/service/apt/apt_a.cpp
@@ -28,6 +28,7 @@ const Interface::FunctionInfo FunctionTable[] = {
     {0x00440000, GetSharedFont,                "GetSharedFont?"},
     {0x004B00C2, AppletUtility,                "AppletUtility?"},
     {0x00550040, nullptr,                      "WriteInputToNsState?"},
+    {0x01010000, Unknown_0x01010000,           "Unknown_0x01010000"},
 };
 
 APT_A_Interface::APT_A_Interface() {
diff --git a/src/core/hle/service/apt/apt_s.cpp b/src/core/hle/service/apt/apt_s.cpp
index 396d1f04a..99acec9a6 100644
--- a/src/core/hle/service/apt/apt_s.cpp
+++ b/src/core/hle/service/apt/apt_s.cpp
@@ -91,6 +91,7 @@ const Interface::FunctionInfo FunctionTable[] = {
     {0x004E0000, nullptr,               "HardwareResetAsync"},
     {0x004F0080, nullptr,               "SetApplicationCpuTimeLimit"},
     {0x00500040, nullptr,               "GetApplicationCpuTimeLimit"},
+    {0x01010000, Unknown_0x01010000,    "Unknown_0x01010000" },
 };
 
 APT_S_Interface::APT_S_Interface() {
diff --git a/src/core/hle/service/apt/apt_u.cpp b/src/core/hle/service/apt/apt_u.cpp
index b724cd72b..999071092 100644
--- a/src/core/hle/service/apt/apt_u.cpp
+++ b/src/core/hle/service/apt/apt_u.cpp
@@ -92,6 +92,7 @@ const Interface::FunctionInfo FunctionTable[] = {
     {0x004E0000, nullptr,                         "HardwareResetAsync"},
     {0x004F0080, SetAppCpuTimeLimit,              "SetAppCpuTimeLimit"},
     {0x00500040, GetAppCpuTimeLimit,              "GetAppCpuTimeLimit"},
+    {0x01010000, Unknown_0x01010000,              "Unknown_0x01010000"},
 };
 
 APT_U_Interface::APT_U_Interface() {
diff --git a/src/core/hle/service/ptm/ptm.cpp b/src/core/hle/service/ptm/ptm.cpp
index 2c7d49c9f..740071f42 100644
--- a/src/core/hle/service/ptm/ptm.cpp
+++ b/src/core/hle/service/ptm/ptm.cpp
@@ -77,6 +77,10 @@ void IsLegacyPowerOff(Service::Interface* self) {
     LOG_WARNING(Service_PTM, "(STUBBED) called");
 }
 
+u8 CheckNew3DS(){
+    return static_cast<u8>(PhysicalVersion::Old3DS);
+}
+
 void Init() {
     AddService(new PTM_Play_Interface);
     AddService(new PTM_Sysm_Interface);
diff --git a/src/core/hle/service/ptm/ptm.h b/src/core/hle/service/ptm/ptm.h
index b690003cb..26203d790 100644
--- a/src/core/hle/service/ptm/ptm.h
+++ b/src/core/hle/service/ptm/ptm.h
@@ -79,6 +79,12 @@ void GetBatteryChargeState(Interface* self);
  */
 void IsLegacyPowerOff(Interface* self);
 
+/**
+* Checks the physical version of the 3Ds
+* @returns The physical version of the 3Ds
+*/
+u8 CheckNew3DS(void);
+
 /// Initialize the PTM service
 void Init();
 
diff --git a/src/core/hle/service/ptm/ptm_sysm.cpp b/src/core/hle/service/ptm/ptm_sysm.cpp
index 655658f3b..8b433cd18 100644
--- a/src/core/hle/service/ptm/ptm_sysm.cpp
+++ b/src/core/hle/service/ptm/ptm_sysm.cpp
@@ -5,10 +5,24 @@
 #include "core/hle/hle.h"
 #include "core/hle/service/ptm/ptm.h"
 #include "core/hle/service/ptm/ptm_sysm.h"
+#include "core/hle/service/ptm/ptm.h"
 
 namespace Service {
 namespace PTM {
 
+/**
+* Returns whether the system is an Old3DS, or a New3DS
+*   Outputs:
+*     1: Result code, 0 on success, otherwise error code
+*     2: Result of function, 0 for Old3DS, or 1 for New3DS
+*/
+void CheckNew3DS(Service::Interface* self){
+    u32* cmd_buff = Kernel::GetCommandBuffer();
+
+    cmd_buff[1] = RESULT_SUCCESS.raw;
+    cmd_buff[2] = PTM::CheckNew3DS();
+}
+
 const Interface::FunctionInfo FunctionTable[] = {
     {0x040100C0, nullptr,             "SetRtcAlarmEx"},
     {0x04020042, nullptr,             "ReplySleepQuery"},
@@ -19,7 +33,7 @@ const Interface::FunctionInfo FunctionTable[] = {
     {0x040700C0, nullptr,             "ShutdownAsync"},
     {0x04080000, nullptr,             "Awake"},
     {0x04090080, nullptr,             "RebootAsync"},
-    {0x040A0000, nullptr,             "CheckNew3DS"},
+    {0x040A0000, CheckNew3DS, "CheckNew3DS"},
     {0x08010640, nullptr,             "SetInfoLEDPattern"},
     {0x08020040, nullptr,             "SetInfoLEDPatternHeader"},
     {0x08030000, nullptr,             "GetInfoLEDStatus"},
diff --git a/src/core/hle/service/ptm/ptm_sysm.h b/src/core/hle/service/ptm/ptm_sysm.h
index e37f20546..ad28186c3 100644
--- a/src/core/hle/service/ptm/ptm_sysm.h
+++ b/src/core/hle/service/ptm/ptm_sysm.h
@@ -9,6 +9,12 @@
 namespace Service {
 namespace PTM {
 
+/// Physical version of the 3DS
+enum class PhysicalVersion : u8 {
+    Old3DS = 0,
+    New3DS = 1,
+};
+
 class PTM_Sysm_Interface : public Interface {
 public:
     PTM_Sysm_Interface();