Installing Drupal with Mysql utf8mb4 character encoding

Start Mysql installation as usual and go screen by screen as mentioned here, do not overstep else your installation will go without utf8mb4 database objects being created. Choose the profile of your choice as shown and click 'Save and continue'.

Choose the language as shown in this screen and click on 'Save and continue'.

Stop at this screen and donot go any further. We will need to perform some manual steps to continue. By this time you can see a settings.php file under <drupal root>/sites/default directory.

Open settings.php file in an editor and go to a blank $databases array variable. Now change this variable as follows.

$databases['default']['default'] = array(
  'driver' => 'mysql',
  'database' => '<name of the database you created>',
  'username' => '<user you created>',
  'password' => '<password of the user>',
  'host' => '<host like localhost>',
  'charset' => 'utf8mb4',
  'collation' => 'utf8mb4_unicode_ci',
);

Save and close this file.