Iran had defeated the Philippines 3-0 in its opening match on Sunday in Pool B at the Ratchaburi Gymnasium in Ratchaburi, Thailand and lost to defending champion Japan 3-0.
Teams split into four pools A, B, C and D of three teams apiece, except Pool D with four teams. Hosts Thailand, Uzbekistan and Macao China are in Pool A, while Pool B consists of defending champion Japan, Iran and the Philippines. Pool C features China, Kazakhstan and Hong Kong, while Korea, Chinese Taipei, India and Australia are in Pool D.
The top four teams will qualify for the FIVB Volleyball Girls' U-19 World Championship.