Step #1
Start the tutorial by making rectangle & line as shown.
Step #2
Draw a rectangle.
Step #3
Make lines for the edges as shown.
Step #4
Make rectangle for the LCD screen.
Step #5
Draw line, charger pin slots & double border circles for the menu button as shown.
Step #6
Draw ear phone and charger pin shapes as shown.
Step #7
Finally, make necessary improvements to finish.