diff --git a/app/build.gradle b/app/build.gradle
index eb5806a..a993539 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -18,7 +18,7 @@ android {
 
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
@@ -29,8 +29,6 @@ android {
 }
 
 dependencies {
-    implementation 'androidx.appcompat:appcompat:1.6.1'
-    implementation 'com.google.android.material:material:1.5.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 7278bf6..461b5a0 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -21,7 +21,7 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/Theme.ModemTool"
+        android:theme="@android:style/Theme.DeviceDefault.Light"
         android:process="com.android.phone"
         tools:targetApi="31">
 
diff --git a/app/src/main/java/run/evan/modemtool/MainActivity.java b/app/src/main/java/run/evan/modemtool/MainActivity.java
index a6f01ae..9b19ddb 100644
--- a/app/src/main/java/run/evan/modemtool/MainActivity.java
+++ b/app/src/main/java/run/evan/modemtool/MainActivity.java
@@ -1,5 +1,6 @@
 package run.evan.modemtool;
 
+import android.app.Activity;
 import android.content.Context;
 import android.os.Bundle;
 import android.telephony.CellIdentityNr;
@@ -15,16 +16,13 @@ import android.widget.EditText;
 import android.widget.Spinner;
 import android.widget.Toast;
 
-import androidx.annotation.NonNull;
-import androidx.appcompat.app.AppCompatActivity;
-
 import com.qualcomm.qcrilhook.QcRilHookCallback;
 
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
 import java.util.List;
 
-public class MainActivity extends AppCompatActivity {
+public class MainActivity extends Activity {
 
 
     private static final String TAG = "ModemTool";
@@ -119,7 +117,7 @@ public class MainActivity extends AppCompatActivity {
 
         cellInfoCallback = new TelephonyManager.CellInfoCallback() {
             @Override
-            public void onCellInfo(@NonNull List<CellInfo> allCellInfo) {
+            public void onCellInfo(List<CellInfo> allCellInfo) {
                 for (CellInfo cellInfo : allCellInfo) {
                     if (cellInfo instanceof CellInfoNr) {
                         if(cellInfo.isRegistered()){
diff --git a/app/src/main/res/values-night/themes.xml b/app/src/main/res/values-night/themes.xml
deleted file mode 100644
index 9313041..0000000
--- a/app/src/main/res/values-night/themes.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<resources xmlns:tools="http://schemas.android.com/tools">
-    <!-- Base application theme. -->
-    <style name="Base.Theme.ModemTool" parent="Theme.Material3.DayNight.NoActionBar">
-        <!-- Customize your dark theme here. -->
-        <!-- <item name="colorPrimary">@color/my_dark_primary</item> -->
-    </style>
-</resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
deleted file mode 100644
index 5e2dea9..0000000
--- a/app/src/main/res/values/themes.xml
+++ /dev/null
@@ -1,9 +0,0 @@
-<resources xmlns:tools="http://schemas.android.com/tools">
-    <!-- Base application theme. -->
-    <style name="Base.Theme.ModemTool" parent="Theme.Material3.DayNight">
-        <!-- Customize your light theme here. -->
-        <!-- <item name="colorPrimary">@color/my_light_primary</item> -->
-    </style>
-
-    <style name="Theme.ModemTool" parent="Base.Theme.ModemTool" />
-</resources>
\ No newline at end of file