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4G : FDD LTE : B1/B3 (Roaming on Truemove H, B8 prohibited) 4.5G : Up to 2xCA B1+B3, nationwide 4x4 MIMO on B3, 256/64QAM 4G Calling ( VoLTE , ViLTE ) : Unsupported
TrueMove H launched its 4G service in a limited scale on 8 May 2013. It was the first 4G service in Thailand using LTE technology. [5] In 2012, True's subsidiary, Real Future (now True Move H), won the 2100 MHz license, together with its rivals AIS and Dtac. [6] In 2015, True Move H won the licenses for 900 MHz and 1800 MHz. [citation needed]
DTAC has international roaming agreements with 147 countries. Currently DTAC is offering 3G commercial service as seen on this coverage map. [13] [14] 3G+ service can be used with 3G+ compatible mobile devices (WCDMA 850 and 2100 and/or HSPA/HSPA+ 850 and 2100) with speeds of up to 42 Mbit/s.
True Corporation Public Company Limited (stylized as true) is a communications conglomerate in Thailand.It is a joint venture between Charoen Pokphand Group and Telenor, formed by the merger between the original True Corporation and DTAC in the form of equal partnership to create a new telecommunications company that can fully meet the needs of the digital age.
State enterprises, the Telephone Organization of Thailand, Communications Authority of Thailand, and Mass Communication Organization of Thailand, were corporatised in 2003 and 2004. The Constitution of 1997 prompted the institutional changes when it declared that all the spectrum is a "national communication resource for public welfare".
Smart Communications Inc., commonly referred to as Smart, is a wholly owned wireless communications and digital services subsidiary of PLDT Inc., [1] a telecommunications and digital services provider based in the Philippines. [2]
Mobile phones in Thailand use 900/1800 MHz for GSM. Domestic roaming service is available free within Thailand in places where there is only a single transmitter in place due to restrictions. As codes are being exhausted, a new range, 09x, is available for assignment.
The use of roaming SIM cards in its most common form is in normal voice applications such as mobile phone calls. The common application of roaming SIMs for voice is where mobile calls are automatically routed to, and made on, the least cost network. This typically means that incoming calls are free, no matter which network a mobile user is on.