textbee/android/app/src/main/res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".activities.MainActivity">

    <LinearLayout
        android:id="@+id/bottom"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ccccccee"
        android:orientation="vertical"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        android:padding="12dp">

        <TextView

            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="How To Use"
            android:textStyle="bold" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Go to vernu-sms.vercel.app/dashboard and click register device, then copy and paste the api key generated or scan the QR code" />

        <Button
            android:id="@+id/grantSMSPermissionBtn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:visibility="gone"
            android:text="Grant SMS Permission" />
    </LinearLayout>


    <ScrollView
        android:id="@+id/scrollView2"
        android:layout_width="match_parent"
        android:layout_height="606dp"
        app:layout_constraintBottom_toTopOf="@+id/bottom"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="1.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">


            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="#ccccccee"
                android:orientation="horizontal">

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_weight="1"
                    android:orientation="vertical"
                    android:padding="5dp">

                    <EditText
                        android:id="@+id/apiKeyEditText"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content"
                        android:ems="10"
                        android:hint="key"
                        android:inputType="text"
                        android:minHeight="48dp"
                        android:textIsSelectable="true" />

                    <EditText
                        android:id="@+id/fcmTokenEditText"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:ems="10"
                        android:enabled="false"
                        android:gravity="start|top"
                        android:hint="FCM Token"
                        android:inputType="textMultiLine"
                        android:visibility="gone" />

                    <Button
                        android:id="@+id/registerDeviceBtn"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="Register" />
                </LinearLayout>

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:orientation="vertical">

                    <Button
                        android:id="@+id/scanQRButton"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_margin="5dp"
                        android:drawableTop="@drawable/ic_baseline_qr_code_24"
                        android:text="Scan"
                        android:textColor="@color/black"
                        android:theme="@style/Theme.Design.Light" />
                </LinearLayout>
            </LinearLayout>


            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:gravity="center"
                android:orientation="horizontal">

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:orientation="vertical">

                    <ImageView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_gravity="center"
                        android:layout_margin="5dp"
                        android:src="@drawable/ic_baseline_phone_android_24" />

                </LinearLayout>

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:layout_weight="1"
                    android:orientation="vertical">

                    <TextView

                        android:id="@+id/deviceBrandAndModelTxt"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="Device Brand, Model"
                        android:textStyle="bold" />

                    <LinearLayout
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:gravity="center"
                        android:orientation="horizontal">

                        <LinearLayout
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"
                            android:layout_gravity="center"
                            android:orientation="vertical">

                            <TextView
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:text="Device ID"
                                android:textStyle="italic" />

                            <TextView
                                android:id="@+id/deviceIdTxt"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:text="ae5ce05c05cde3" />
                        </LinearLayout>

                        <ImageButton

                            android:id="@+id/copyDeviceIdImgBtn"
                            android:layout_width="wrap_content"
                            android:layout_height="wrap_content"

                            android:src="@drawable/ic_baseline_content_copy_24" />
                    </LinearLayout>


                </LinearLayout>

                <LinearLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center"
                    android:gravity="center"
                    android:orientation="vertical">

                    <Switch
                        android:id="@+id/gatewaySwitch"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_margin="5dp"
                        android:minHeight="32dp"
                        android:text="" />

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:text="Status"
                        android:textSize="16dp"
                        android:textStyle="bold" />
                </LinearLayout>
            </LinearLayout>


        </LinearLayout>
    </ScrollView>


</androidx.constraintlayout.widget.ConstraintLayout>