Signal-Android/app/src/main/res/layout/fragment_change_phone_number.xml

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

    <include layout="@layout/dsl_settings_toolbar" />

    <ScrollView
        android:id="@+id/change_phone_number_scroll"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_marginBottom="24dp"
        android:fillViewport="true"
        app:layout_constraintBottom_toTopOf="@+id/change_phone_number_continue"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/toolbar">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <androidx.appcompat.widget.AppCompatImageView
                android:id="@+id/change_phone_number_hero"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginTop="20dp"
                app:layout_constraintBottom_toTopOf="@id/change_phone_number_header"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:layout_constraintVertical_chainStyle="spread_inside"
                app:srcCompat="@drawable/change_number_hero_image" />

            <TextView
                android:id="@+id/change_phone_number_header"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginStart="32dp"
                android:layout_marginTop="24dp"
                android:layout_marginEnd="32dp"
                android:gravity="center"
                android:text="@string/AccountSettingsFragment__change_phone_number"
                android:textAppearance="@style/TextAppearance.Signal.Title1"
                app:layout_constraintBottom_toTopOf="@id/change_phone_number_body"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/change_phone_number_hero" />

            <TextView
                android:id="@+id/change_phone_number_body"
                android:layout_width="match_parent"
                android:layout_height="0dp"
                android:layout_marginStart="32dp"
                android:layout_marginTop="12dp"
                android:layout_marginEnd="32dp"
                android:gravity="center_horizontal"
                android:text="@string/ChangeNumberFragment__use_this_to_change_your_current_phone_number_to_a_new_phone_number"
                android:textAppearance="@style/TextAppearance.Signal.Body1"
                app:layout_constraintBottom_toBottomOf="parent"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toBottomOf="@+id/change_phone_number_header" />

        </androidx.constraintlayout.widget.ConstraintLayout>

    </ScrollView>

    <com.google.android.material.button.MaterialButton
        android:id="@+id/change_phone_number_continue"
        style="@style/Signal.Widget.Button.Large.Primary"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginStart="32dp"
        android:layout_marginEnd="32dp"
        android:layout_marginBottom="32dp"
        android:text="@string/ChangeNumberFragment__continue"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/change_phone_number_scroll" />

</androidx.constraintlayout.widget.ConstraintLayout>