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text messages, then expanding to Multimedia Messaging Service (MMS), and mobile internet with a theoretical maximum transfer speed of 384 kbit/s (48 kB/s).

In 2001, the third-generation (3G) was launched in Japan by NTT DoCoMo on the WCDMA standard. This was followed by 3.5G or 3G+ enhancements based on the high-speed packet access

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