title: iOS maps GPS location implementing blue-ball location and arrow sign on the map
body: <p>1.) I need to have a blue ball circle/location dot on a map as shown below. </p>
  
  <ul>
  <li>What is it called? </li>
  <li>How can I implement it?</li>
  </ul>
  
  <p><img src="https://i.stack.imgur.com/q6hD8.png" alt="enter image description here"></p>
  
  <p>2.) How do I get the arrow on the pop-up screen as below?<br>
  <img src="https://i.stack.imgur.com/FoMT8.png" alt="enter image description here"></p>