Add Phone Number and New Fields to Drupal User Profile
As we know, Drupal is powerful CMS because very extensible.
This time I won't extend Drupal by code or add any module, just configure some fields.
One of the common field you want to extend in user profile is add Phone Number field (yes, everyone now has cellphone). Or may be you want to add several extra fields on the Drupal's account, you can just add it like managing the fields when you add new content type.
Here's how you can "manage fields" of People's Account Setting: your-drupal-website.domain/admin/config/people/accounts/fields
You don't even need to code anything or add any module, even there're many modules about Profiles.