Why the original 4G was not actually 4G, and how it changed everything

Health · Published 3 October 2026 Swipe more like this →

In short: Long Term Evolution, or LTE, redefined mobile connectivity by shifting to an IP-based architecture. Though marketed as 4G, the initial version failed to meet strict technical criteria. Today, it stands as a foundational standard that bridged the gap between legacy networks and the high-speed, low-latency demands of modern wireless communication.

Developed by the 3GPP, LTE was designed to improve upon 2G and 3G standards by utilizing advanced digital signal processing and a simplified, IP-based network architecture known as the Evolved Packet Core. This transition allowed for significantly reduced transfer latency and higher data capacity, enabling each cell to support up to four times the voice and data traffic of older HSPA systems. Because the LTE radio interface is incompatible with its predecessors, it requires a dedicated radio spectrum to function.

The standard's journey began in 1998, with formal studies commencing in 2005 after NTT Docomo proposed it as an international standard. By December 2008, the specification was finalized, leading to the first commercial launch by TeliaSonera in Stockholm and Oslo on December 14, 2009. While TeliaSonera marketed this as 4G, it did not meet the IMT-Advanced technical requirements set by the ITU-R. It was only after market pressure and significant performance gains that the ITU-R permitted LTE and similar technologies to be branded as 4G, eventually distinguishing later iterations like LTE Advanced as the true IMT-Advanced standard.

LTE provides peak downlink rates of 300 Mbit/s and uplink rates of 75 Mbit/s, while supporting scalable bandwidths from 1.4 MHz to 20 MHz. Its flexibility allows for both frequency division duplexing and time-division duplexing, ensuring it can manage fast-moving mobile devices and seamless handovers between cell towers. As networks evolve toward 5G, LTE remains a critical global standard, though its implementation varies significantly by country, necessitating multi-band devices for consistent international connectivity.

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