JTI US Address: 3407 W 6th St Phone Number: 213-387-7778 (No Ratings Yet)Loading... JTI LA (Main) 3407 W 6th St. STE 405 Los Angeles, CA 90020 6th and Catalina inside the Royal Plaza building on the 4th floor. Cell phone plans, accessories, iPhone repair, Samsung phone repair… Posted in SERVICES.