4G vs 5G

4G LTE revolutionized mobile internet when it launched in the early 2010s, and it remains the backbone of cellular connectivity for hundreds of millions of people. 5G promises dramatically higher speeds and lower latency, but the real-world gap between the two technologies depends enormously on which 5G band your carrier has deployed in your area. This guide cuts through the marketing to show you what the numbers actually look like in daily use.

Speed: What the Real-World Data Shows

Carrier advertisements typically cite peak speeds — the maximum a single device can achieve under ideal conditions on an unloaded tower. Those numbers bear little resemblance to what your phone measures during a speed test in the middle of the day. According to aggregated speed test data from Ookla and Opensignal covering 2025 US measurements, the median 4G LTE download speed sits between 30 and 50 Mbps. The median for 5G connections — which include a mix of low-band, mid-band, and some mmWave — ranges from roughly 130 to 220 Mbps depending on carrier and geography.

Breaking that 5G figure down by band makes the picture clearer. Low-band 5G (sub-1 GHz) typically delivers 50–250 Mbps, which overlaps with the upper end of what LTE can achieve under good conditions. Mid-band 5G (1–6 GHz), which is the dominant band in urban and suburban deployments from T-Mobile, Verizon, and AT&T, typically delivers 300–900 Mbps. mmWave 5G, available near select towers in dense cities, can reach 1–3 Gbps in ideal outdoor conditions but drops sharply as soon as you move indoors or more than 150 meters from the antenna.

Latency: When the Difference Is Tangible

4G LTE round-trip latency typically measures 30–50 milliseconds under normal network load. 5G sub-6 GHz latency generally falls between 10 and 20 ms, with Standalone 5G networks capable of sub-10 ms. For activities like web browsing, streaming video, or social media scrolling, neither you nor your app will notice a 20–40 ms difference. The latency gap becomes meaningful in specific use cases: competitive mobile gaming, real-time video calls where even a fraction of a second of delay is disruptive, and emerging applications in industrial automation and augmented reality. For most consumers in 2026, the speed improvement is far more noticeable day-to-day than the latency improvement.

Coverage: Where 4G Still Wins

4G LTE covers approximately 99% of the US population. The three major carriers have spent over a decade densifying their LTE networks, and coverage gaps today are mostly limited to extremely rural or remote areas. 5G coverage, by contrast, is highly uneven. Low-band 5G coverage has expanded rapidly and now reaches the majority of the US population, but mid-band 5G — the band that delivers genuinely impressive speeds — covers roughly 75% of the population as of 2025–2026. mmWave 5G is available to less than 5% of the population, concentrated in specific blocks of a handful of major cities.

The practical consequence is that if you travel frequently between cities and rural areas, your phone will regularly fall back to 4G LTE even if you have a 5G device and plan. The 5G icon on your status bar reflects the band your phone is currently connected to — it does not guarantee any particular speed.

Battery Impact

Early 5G phones, particularly those released in 2019–2021, had a reputation for accelerated battery drain caused by inefficient first-generation 5G modems running in parallel with 4G circuits in Non-Standalone mode. Modern devices have largely resolved this. The Qualcomm Snapdragon X70 and X75 modems and Apple's proprietary 5G silicon reduce power consumption substantially. In typical mixed-use conditions — some web browsing, some streaming, some calls — the battery difference between a 5G and 4G connection on a current device is modest, often less than 10%. Extended periods on mmWave or heavy continuous data transfers will still drain a battery faster than LTE equivalents.

When to Upgrade to 5G — and When to Stay on 4G

Upgrading to 5G makes the most sense if you live or work in an area with mid-band coverage, regularly use your phone as a mobile hotspot for a laptop, stream high-resolution video frequently on cellular, or download large files on the go. These are all scenarios where the 3–10x speed improvement of mid-band 5G translates into a noticeably better experience.

Staying on 4G is perfectly reasonable if you live in a rural area where only low-band 5G is available, your usage is primarily light browsing and messaging, or your current 4G device is in good working order and you are not due for an upgrade. 4G LTE is more than fast enough to stream HD video, handle video calls, and support virtually all mobile app use cases. The technology will remain supported for the foreseeable future — carriers have not announced any timelines for 4G shutdown.