This brought a new demand for operator acceptance testing. The networks are also more advanced and more complex, combining cellular systems such as 2G, 3G, LTE and LTE-Advanced with non-cellular wireless systems such as Wi-Fi and Bluetooth. Chipset vendors and IT companies now have the greatest power over device development and the manufacturing market is led by EMS (Electronics Manufacturing Service). This is complicated by the fact that the industry has changed greatly since the days when it was led by telecommunication operators. The most crucial issue for telecommunication operators is how to provide a reliable service for their users. NTT DoCoMo (TBD), KDDI/Okinawa Cellular (TBD), Softbank (TBD) Hong Kong, Australia, China, India, South Africa, IndonesiaĬlearwire, Wireless City Planning (AXGP service), UQ Communications (WiMAX2+) Optus, Telstra, KDDI/Okinawa Cellular, Asia Pacific Telecom, Far EasTone, Ambit Microsystems, NTT DoCoMo, Softbank, Willcom Okinawa, Taiwan Mobile Japan, Australia, Brazil, New Zealand, Central and South America, Taiwan T-Mobile US, US Cellular, C-Spire, AT&T Mobility Softbank, KT, Chunghwa Telecom, Taiwan Star Telecom Japan, South Korea, Europe, Taiwan, Indonesia ![]() TeliaSonera, CSL, 3 Hong Kong, PCCW, China Mobile, LG U+ Northern Europe, Hong Kong, South Korea, Australia, Canada, Central and South America NTT DoCoMo (Tokyo/Nagoya/Osaka band), Softbank (formerly Y! Mobile)ĪT&T Mobility, T-Mobile US, MetroPCS, Verizon Wireless Japan, Hong Kong, Taiwan, South Korea, Australia, Europe, China, Indonesia NTT DoCoMo, KDDI/Okinawa Cellular, Softbank, LG U+, China Telecom, China Unicom
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