Move WordPress website to another domain on the same hosting service.
Step 1
Backup wordpress site and database
Step 2
Create new database for the migrated site
create username and password for that database
Database: new_database
Username: new_username
Password: new_password
Step 3
Upload and Extract backup of wordpress website to new location
Step 4
Import original database in new database using phpadmin with defaults
in the table_options change the siteurl and home to the new url
make sure table prefix is the same as the one in the new database
Step 5
Delete index.xhtml in new website location is exist.
Step 6
Change database information in wp-config.php
Try loading site in new open browser.