Mobile phone service business By beginning mobile phone service in the 800 MHz and 1800 MHz frequencies under a joint operating agreement in the form of "Build-transfer-operate" from CAT Telecom Public Company Limited (formerly the Communications Authority of Thailand)
Mobile phone service business By beginning mobile phone service in the 800 MHz and 1800 MHz frequencies under a joint operating agreement in the form of "Build-transfer-operate" from CAT Telecom Public Company Limited (formerly the Communications Authority of Thailand)