5G is always faster than 4G
5G encompasses three distinct frequency bands with radically different performance characteristics. High-band mmWave 5G achieves multi-gigabit speeds but has very limited coverage, while low-band 5G may offer only marginally better speeds than 4G LTE, and can even underperform a strong 4G connection indoors.
What we know
The term "5G" covers three frequency bands with fundamentally different physical properties, and marketing often obscures this distinction. High-band millimeter wave (mmWave, roughly 24 to 100 GHz) 5G can achieve peak speeds of 4 to 10 Gbps, but its range is limited to a few hundred meters and it cannot penetrate walls, foliage, or even heavy rain effectively. Mid-band 5G (roughly 1 to 6 GHz) delivers a middle ground of 100 to 900 Mbps with substantially better coverage than mmWave. Low-band 5G (below 1 GHz) offers speeds of roughly 50 to 100 Mbps, which is only marginally faster than mature 4G LTE networks that typically deliver 30 to 100 Mbps in good conditions.
In practice, most 5G deployments in suburban and rural areas rely on low-band or mid-band frequencies rather than mmWave, because mmWave requires a very dense network of small cells to maintain coverage and is economically impractical outside dense urban cores. A user connected to low-band 5G at the edge of a city may experience slower real-world speeds than a user on a well-established 4G LTE connection in a city center, simply because 4G infrastructure in mature markets is denser and more optimized after more than a decade of investment. Indoor 5G coverage can also be inferior to 4G in some buildings, because the higher frequencies used by 5G, even in the mid-band range, are attenuated more strongly by concrete, glass, and other building materials than the lower frequencies traditionally used by 4G.
Network congestion adds a further variable: a 5G connection shared among many users in a crowded stadium or event venue can deliver slower per-user speeds than an uncongested 4G connection elsewhere. Europe's aviation regulator EASA approved 5G connectivity on aircraft in 2023, and various national regulators have relaxed earlier restrictions on 5G operation near airports and at ground level as interference concerns were resolved through engineering standards. These policy developments reflect a genuinely expanding deployment footprint, but they do not override the physics that determine achievable speed and coverage at any specific location and time, and a well-informed consumer should treat "5G" as a range of possible experiences rather than a guaranteed upgrade over 4G.
Carriers have strong commercial incentives to market any available frequency as "5G" regardless of the underlying performance a subscriber will actually experience, since the label alone carries marketing value distinct from real-world speed. Consumer testing organizations that measure real-world 5G speeds across major carriers routinely find wide variation by city, carrier, and even time of day, reinforcing that the label describes a technology generation and standard rather than a guaranteed speed tier. Buyers who want a reliable performance upgrade should check independent coverage maps and speed test data for their specific location rather than assuming that any device or plan advertised as 5G will outperform a strong existing 4G connection.
Common claims
- Connecting to 5G always means faster download speedsFalse. Low-band 5G is only marginally faster than 4G LTE, and network congestion can make real speeds slower.
- 5G provides gigabit speeds everywhereFalse. Gigabit speeds (mmWave) are available only in dense urban areas with direct line-of-sight to towers.
- 5G indoor coverage is better than 4GOften false. Higher 5G frequencies are more attenuated by walls, making indoor coverage worse in many deployments.