input: 
  from flask import Flask, render_template, request, redirect
  import sqlite3
  
  def submit_form_data_to_db():
   """
   Create an application using Python and Flask to submit form data and store it in a database.
   The form contains elements for Name, Email, and Phone. Upon submission, the data is inserted
   into a SQLite database.
   
   Example:
   When the form with data {'name': 'John Doe', 'email': 'john.doe@example.com', 'phone': '1234567890'}
   is submitted, it should be stored in the database and the user should be redirected to the home page.
   """
   app = Flask(__name__)
  
   @app.route('/')
   def home():
    return render_template('index.html')
  
   @app.route('/submit', methods=['POST'])
   def submit():
    name = request.form.get('name')
    email = request.form.get('email')
    phone = request.form.get('phone')
    
    conn = sqlite3.connect('data.db')
    cur = conn.cursor()
    
    cur.execute("INSERT INTO data (name, email, phone) VALUES (?, ?, ?)", (name, email, phone))
    conn.commit()
    
    return redirect('/')
  	
   if __name__ == '__main__':
    app.run(debug=True)
  
output:     conn.close()