diff --git a/app/src/main/java/com/capstone/foodify/MainActivity.java b/app/src/main/java/com/capstone/foodify/MainActivity.java
index 87a3743..fa23345 100644
--- a/app/src/main/java/com/capstone/foodify/MainActivity.java
+++ b/app/src/main/java/com/capstone/foodify/MainActivity.java
@@ -25,8 +25,6 @@ public class MainActivity extends AppCompatActivity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
-        Objects.requireNonNull(getSupportActionBar()).hide();
-
         bottomNavigationView = findViewById(R.id.bottom_nav);
         viewPager2 = findViewById(R.id.viewPager);
         viewPagerAdapter = new ViewPagerAdapter(this);
diff --git a/app/src/main/java/com/capstone/foodify/SignInActivity.java b/app/src/main/java/com/capstone/foodify/SignInActivity.java
index 15f0741..dcd711d 100644
--- a/app/src/main/java/com/capstone/foodify/SignInActivity.java
+++ b/app/src/main/java/com/capstone/foodify/SignInActivity.java
@@ -4,6 +4,7 @@ import android.content.Intent;
 import android.os.Bundle;
 import android.view.MenuItem;
 import android.view.View;
+import android.widget.ImageView;
 import android.widget.TextView;
 
 import androidx.annotation.NonNull;
@@ -15,18 +16,23 @@ import java.util.Objects;
 public class SignInActivity extends AppCompatActivity {
 
     TextView signUp_textView;
+
+    ImageView back_image;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_sign_in);
 
-        // calling the action bar
-        ActionBar actionBar = getSupportActionBar();
-        Objects.requireNonNull(actionBar).setDisplayShowTitleEnabled(false);
-        // showing the back button in action bar
-        Objects.requireNonNull(actionBar).setDisplayHomeAsUpEnabled(true);
-
         signUp_textView = (TextView) findViewById(R.id.sign_up_textView);
+
+        back_image = (ImageView) findViewById(R.id.back_image);
+
+        back_image.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                onBackPressed();
+            }
+        });
         signUp_textView.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
diff --git a/app/src/main/java/com/capstone/foodify/SignUpActivity.java b/app/src/main/java/com/capstone/foodify/SignUpActivity.java
index 2a8aa86..9f960b9 100644
--- a/app/src/main/java/com/capstone/foodify/SignUpActivity.java
+++ b/app/src/main/java/com/capstone/foodify/SignUpActivity.java
@@ -12,6 +12,7 @@ import android.view.ViewGroup;
 import android.widget.ArrayAdapter;
 import android.widget.DatePicker;
 import android.widget.EditText;
+import android.widget.ImageView;
 import android.widget.Spinner;
 import android.widget.TextView;
 
@@ -30,9 +31,9 @@ public class SignUpActivity extends AppCompatActivity {
             textInput_address, textInput_repeatPassword, textInput_firstName, textInput_lastName, textInput_birthDay;
     final Calendar myCalendar= Calendar.getInstance();
     EditText editText, edt_birthday;
-
     TextView signIn_textView;
     Spinner wardSpinner, districtSpinner;
+    ImageView back_image;
 
 
     @Override
@@ -52,9 +53,14 @@ public class SignUpActivity extends AppCompatActivity {
             }
         });
 
-        // enabling action bar app icon and behaving it as toggle button
-        Objects.requireNonNull(getSupportActionBar()).setDisplayHomeAsUpEnabled(true);
-        getSupportActionBar().setHomeButtonEnabled(true);
+        back_image = (ImageView) findViewById(R.id.back_image);
+
+        back_image.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                onBackPressed();
+            }
+        });
     }
 
 
diff --git a/app/src/main/java/com/capstone/foodify/SplashScreenActivity.java b/app/src/main/java/com/capstone/foodify/SplashScreenActivity.java
index 82e10c7..998d639 100644
--- a/app/src/main/java/com/capstone/foodify/SplashScreenActivity.java
+++ b/app/src/main/java/com/capstone/foodify/SplashScreenActivity.java
@@ -23,7 +23,5 @@ public class SplashScreenActivity extends AppCompatActivity {
                 finish();
             }
         }, 3000);
-
-        Objects.requireNonNull(getSupportActionBar()).hide();
     }
 }
\ No newline at end of file
diff --git a/app/src/main/res/drawable/vector.xml b/app/src/main/res/drawable/back_button.xml
similarity index 100%
rename from app/src/main/res/drawable/vector.xml
rename to app/src/main/res/drawable/back_button.xml
diff --git a/app/src/main/res/layout/activity_sign_in.xml b/app/src/main/res/layout/activity_sign_in.xml
index d0c066c..58433c4 100644
--- a/app/src/main/res/layout/activity_sign_in.xml
+++ b/app/src/main/res/layout/activity_sign_in.xml
@@ -6,18 +6,28 @@
     android:layout_height="match_parent"
     tools:context=".SignInActivity">
 
+    <ImageView
+        android:id="@+id/back_image"
+        android:layout_width="20dp"
+        android:layout_height="20dp"
+        android:src="@drawable/back_button"
+        android:layout_marginStart="10dp"
+        android:layout_marginTop="25dp"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
     <TextView
         android:id="@+id/textView"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="20dp"
-        android:layout_marginTop="50dp"
+        android:layout_marginTop="35dp"
         android:fontFamily="@font/bebas"
         android:text="@string/sign_in_text"
         android:textColor="@color/black"
         android:textSize="50sp"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toTopOf="@id/back_image" />
 
     <ImageView
         android:id="@+id/logo_image"
diff --git a/app/src/main/res/layout/activity_sign_up.xml b/app/src/main/res/layout/activity_sign_up.xml
index ca82afe..ad4591b 100644
--- a/app/src/main/res/layout/activity_sign_up.xml
+++ b/app/src/main/res/layout/activity_sign_up.xml
@@ -7,6 +7,16 @@
     android:layout_height="match_parent"
     tools:context=".SignUpActivity">
 
+    <ImageView
+        android:id="@+id/back_image"
+        android:layout_width="20dp"
+        android:layout_height="20dp"
+        android:src="@drawable/back_button"
+        android:layout_marginStart="10dp"
+        android:layout_marginTop="25dp"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
     <TextView
         android:id="@+id/textView"
         android:layout_width="wrap_content"
@@ -18,7 +28,7 @@
         android:textColor="@color/black"
         android:textSize="50sp"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toTopOf="@id/back_image" />
 
 
     <com.google.android.material.textfield.TextInputLayout
@@ -248,8 +258,9 @@
         android:text="@string/sign_up_text"
         android:textSize="20sp"
         android:padding="10dp"
-        android:layout_margin="40dp"
-
+        android:layout_marginStart="40dp"
+        android:layout_marginEnd="40dp"
+        android:layout_marginBottom="17dp"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         app:layout_constraintBottom_toTopOf="@+id/linearLayout"
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index 4a5ddcf..607096e 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -10,6 +10,8 @@
         <!-- Status bar color. -->
         <item name="android:statusBarColor">?attr/colorPrimaryVariant</item>
         <!-- Customize your theme here. -->
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
     </style>
 
     <style name="DefaultSolid" parent="Widget.MaterialComponents.Button">