diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ca3199c
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,16 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/app/release
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..26d3352
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/.idea/.name b/.idea/.name
new file mode 100644
index 0000000..7c28446
--- /dev/null
+++ b/.idea/.name
@@ -0,0 +1 @@
+Carrier Vanity Name
\ No newline at end of file
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..fb7f4a8
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
new file mode 100644
index 0000000..a9f4e52
--- /dev/null
+++ b/.idea/gradle.xml
@@ -0,0 +1,18 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..54d5acd
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,10 @@
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..7288e65
--- /dev/null
+++ b/README.md
@@ -0,0 +1,11 @@
+# Carrier Vanity Name
+Carrier Vanity Name is a very simple app to change the carrier names on unrooted Android devices.
+
+The changed names will persist through reboots. To revert them back, click the reset button in the app.
+
+The app uses [Shizuku](https://shizuku.rikka.app/) to achieve this using carrier config overrides. This method was inspired by Kyujin Cho's [pixel-volte-patch](https://github.com/kyujin-cho/pixel-volte-patch), which uses the same method to enable VoLTE on some Google Pixel and LG devices.
+
+**WARNING**: Anything using Shizuku might potentially cause harm to your device (and the data on it). I'm not responsible for any damage that might be caused by this app.
+You have been warned.
+
+[You can download a prebuilt APK here](https://github.com/nullbytepl/CarrierVanityName)
\ No newline at end of file
diff --git a/app/.gitignore b/app/.gitignore
new file mode 100644
index 0000000..42afabf
--- /dev/null
+++ b/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
new file mode 100644
index 0000000..6fb8196
--- /dev/null
+++ b/app/build.gradle
@@ -0,0 +1,55 @@
+plugins {
+ id 'com.android.application'
+ id 'org.jetbrains.kotlin.android'
+}
+
+android {
+ namespace 'gay.nullby.carriername'
+ compileSdk 33
+
+ defaultConfig {
+ applicationId "gay.nullby.carriername"
+ minSdk 28
+ targetSdk 33
+ versionCode 1
+ versionName "1.0"
+
+ testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+ }
+
+ buildTypes {
+ release {
+ minifyEnabled false
+ proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+ }
+ }
+ compileOptions {
+ sourceCompatibility JavaVersion.VERSION_1_8
+ targetCompatibility JavaVersion.VERSION_1_8
+ }
+ kotlinOptions {
+ jvmTarget = '1.8'
+ }
+ buildFeatures {
+ viewBinding true
+ }
+}
+
+dependencies {
+
+ implementation 'androidx.core:core-ktx:1.7.0'
+ implementation 'androidx.appcompat:appcompat:1.6.0'
+ implementation 'com.google.android.material:material:1.5.0'
+ implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+ implementation 'androidx.navigation:navigation-fragment-ktx:2.4.1'
+ implementation 'androidx.navigation:navigation-ui-ktx:2.4.1'
+ testImplementation 'junit:junit:4.13.2'
+ androidTestImplementation 'androidx.test.ext:junit:1.1.5'
+ androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+
+ def shizuku_version = "13.1.0"
+ implementation "dev.rikka.shizuku:api:$shizuku_version"
+ implementation "dev.rikka.shizuku:provider:$shizuku_version"
+
+ implementation 'org.lsposed.hiddenapibypass:hiddenapibypass:4.3'
+}
\ No newline at end of file
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
new file mode 100644
index 0000000..481bb43
--- /dev/null
+++ b/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+# http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+# public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/app/src/androidTest/java/gay/nullby/carriername/ExampleInstrumentedTest.kt b/app/src/androidTest/java/gay/nullby/carriername/ExampleInstrumentedTest.kt
new file mode 100644
index 0000000..2043b01
--- /dev/null
+++ b/app/src/androidTest/java/gay/nullby/carriername/ExampleInstrumentedTest.kt
@@ -0,0 +1,24 @@
+package gay.nullby.carriername
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+ @Test
+ fun useAppContext() {
+ // Context of the app under test.
+ val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+ assertEquals("gay.nullby.carriername", appContext.packageName)
+ }
+}
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..3afcd17
--- /dev/null
+++ b/app/src/main/AndroidManifest.xml
@@ -0,0 +1,34 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/app/src/main/java/gay/nullby/carriername/MainActivity.kt b/app/src/main/java/gay/nullby/carriername/MainActivity.kt
new file mode 100644
index 0000000..6163258
--- /dev/null
+++ b/app/src/main/java/gay/nullby/carriername/MainActivity.kt
@@ -0,0 +1,42 @@
+package gay.nullby.carriername
+
+import android.os.Build
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.WindowCompat
+import androidx.navigation.findNavController
+import androidx.navigation.ui.AppBarConfiguration
+import androidx.navigation.ui.navigateUp
+import androidx.navigation.ui.setupActionBarWithNavController
+import androidx.annotation.RequiresApi
+import gay.nullby.carriername.databinding.ActivityMainBinding
+import org.lsposed.hiddenapibypass.HiddenApiBypass
+
+class MainActivity : AppCompatActivity() {
+
+ private lateinit var appBarConfiguration: AppBarConfiguration
+ private lateinit var binding: ActivityMainBinding
+
+ override fun onCreate(savedInstanceState: Bundle?) {
+ WindowCompat.setDecorFitsSystemWindows(window, false)
+ super.onCreate(savedInstanceState)
+
+ HiddenApiBypass.addHiddenApiExemptions("L")
+ HiddenApiBypass.addHiddenApiExemptions("I")
+
+ binding = ActivityMainBinding.inflate(layoutInflater)
+ setContentView(binding.root)
+
+ setSupportActionBar(binding.toolbar)
+
+ val navController = findNavController(R.id.nav_host_fragment_content_main)
+ appBarConfiguration = AppBarConfiguration(navController.graph)
+ setupActionBarWithNavController(navController, appBarConfiguration)
+ }
+
+ override fun onSupportNavigateUp(): Boolean {
+ val navController = findNavController(R.id.nav_host_fragment_content_main)
+ return navController.navigateUp(appBarConfiguration)
+ || super.onSupportNavigateUp()
+ }
+}
\ No newline at end of file
diff --git a/app/src/main/java/gay/nullby/carriername/SetupFragment.kt b/app/src/main/java/gay/nullby/carriername/SetupFragment.kt
new file mode 100644
index 0000000..05bc594
--- /dev/null
+++ b/app/src/main/java/gay/nullby/carriername/SetupFragment.kt
@@ -0,0 +1,64 @@
+package gay.nullby.carriername
+
+import android.content.pm.PackageManager
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.navigation.fragment.findNavController
+import gay.nullby.carriername.databinding.FragmentSetupBinding
+import rikka.shizuku.Shizuku
+
+class SetupFragment : Fragment() {
+
+ private var _binding: FragmentSetupBinding? = null
+
+ private val binding get() = _binding!!
+
+ override fun onCreateView(
+ inflater: LayoutInflater, container: ViewGroup?,
+ savedInstanceState: Bundle?
+ ): View? {
+ _binding = FragmentSetupBinding.inflate(inflater, container, false)
+ return binding.root
+ }
+
+ override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+ super.onViewCreated(view, savedInstanceState)
+
+ if (Shizuku.getBinder() != null) {
+ // Shizuku is already bound
+ handleShizukuConnected()
+ } else {
+ Shizuku.addBinderReceivedListener {
+ // Shizuku connects after some time
+ handleShizukuConnected()
+ }
+ }
+
+ Shizuku.addRequestPermissionResultListener { _, grantResult ->
+ if (grantResult == PackageManager.PERMISSION_GRANTED) {
+ findNavController().navigate(R.id.action_setup_to_target)
+ }
+ }
+
+ binding.buttonFirst.setOnClickListener {
+ Shizuku.requestPermission(0)
+ }
+ }
+
+ private fun handleShizukuConnected() {
+ if (Shizuku.checkSelfPermission() == PackageManager.PERMISSION_GRANTED) {
+ findNavController().navigate(R.id.action_setup_to_target)
+ } else {
+ binding.buttonFirst.isEnabled = true
+ }
+ }
+
+ override fun onDestroyView() {
+ super.onDestroyView()
+ _binding = null
+ }
+
+}
\ No newline at end of file
diff --git a/app/src/main/java/gay/nullby/carriername/TargetFragment.kt b/app/src/main/java/gay/nullby/carriername/TargetFragment.kt
new file mode 100644
index 0000000..d7544c4
--- /dev/null
+++ b/app/src/main/java/gay/nullby/carriername/TargetFragment.kt
@@ -0,0 +1,141 @@
+package gay.nullby.carriername
+
+import android.content.Context
+import android.os.Bundle
+import android.os.PersistableBundle
+import android.telephony.CarrierConfigManager
+import android.telephony.SubscriptionManager
+import android.telephony.TelephonyFrameworkInitializer
+import android.telephony.TelephonyManager
+import android.util.Log
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import android.widget.EditText
+import android.widget.RadioButton
+import android.widget.RadioGroup
+import android.widget.Toast
+import com.android.internal.telephony.ICarrierConfigLoader
+import gay.nullby.carriername.databinding.FragmentTargetBinding
+import rikka.shizuku.ShizukuBinderWrapper
+
+class TargetFragment : Fragment() {
+ private val TAG: String = "TargetFragment"
+
+ private var _binding: FragmentTargetBinding? = null
+
+ private val binding get() = _binding!!
+
+ private var subId1: Int = -1;
+ private var subId2: Int = -1;
+
+ private var selectedSub: Int = 1;
+
+ override fun onCreateView(
+ inflater: LayoutInflater, container: ViewGroup?,
+ savedInstanceState: Bundle?
+ ): View? {
+
+ _binding = FragmentTargetBinding.inflate(inflater, container, false)
+ return binding.root
+
+ }
+
+ override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+ super.onViewCreated(view, savedInstanceState)
+
+ var _subId1: IntArray? = SubscriptionManager.getSubId(0);
+ var _subId2: IntArray? = SubscriptionManager.getSubId(1);
+
+ Log.d(TAG, "#onViewCreated(): subId1=$subId1 subId2=$subId2")
+
+ if (_subId1 != null) {
+ subId1 = _subId1[0]
+ view.findViewById(R.id.sub1_button).text = "Network 1 (carrier: ${getCarrierNameBySubId(subId1)})"
+ }
+ if (_subId2 != null) {
+ subId2 = _subId2[0]
+ view.findViewById(R.id.sub2_button).text = "Network 2 (carrier: ${getCarrierNameBySubId(subId2)})"
+ }
+
+ if (subId2 == -1) {
+ view.findViewById(R.id.sub2_button).visibility = View.GONE
+ }
+
+ view.findViewById