4G vs 5G
4G, more commonly called LTE in real-world deployments, is the fourth generation of mobile networking — the standard most phones and tablets connected to from the early 2010s. 5G is its successor, designed for higher peak speeds, lower latency, and use cases beyond phones (industrial sensors, fixed-wireless home internet, connected vehicles). For most people on a phone, the day-to-day difference is more modest than the marketing suggests.
Last reviewed on 2026-04-27.
Quick Comparison
| Aspect | 4G | 5G |
|---|---|---|
| Generation | 4th — succeeded 3G in the early 2010s | 5th — rollouts began commercially around 2019 |
| Common alias | LTE | 5G NR (New Radio) |
| Peak download (theoretical) | ~1 Gbps under ideal conditions | 10 Gbps+ in mmWave bands |
| Typical real-world download | 30–150 Mbps | 100–700 Mbps; very variable by band and city |
| Latency | 30–50 ms typical | 10–30 ms typical, with 1 ms targeted in specialised setups |
| Frequency bands | Mostly sub-3 GHz | Low-band, mid-band (sub-6 GHz), and high-band millimetre wave |
| Coverage | Mature and near-universal in developed markets | Mid-band good in cities; mmWave is short-range and patchy |
| Battery impact | Stable; well-optimised | Higher when actively using high-bandwidth links; small idle penalty |
Key Differences
1. Different generations, overlapping in practice
4G (LTE in deployment) is a mature standard. Networks have been tuned for over a decade; coverage is broad in developed markets and meaningful in most others. For typical phone use — messaging, web, video at a normal resolution — LTE is genuinely fast enough.
5G is the successor, designed from the start for higher peaks, lower latency, and many more connected devices per cell. It coexists with 4G; phones often use both at once (LTE for control, 5G for data) on networks that haven't fully migrated.
2. Speed, in practice
4G typically delivers somewhere between 30 and 150 Mbps in good conditions. That's enough to stream HD video, video-call, and download moderate files quickly.
5G can deliver speeds many times higher — 5G mid-band routinely hits several hundred Mbps, and mmWave can hit several Gbps where it's available. Outside cities or special venues, the realistic step up over 4G is often two to four times — fast, but not the order-of-magnitude jump the marketing implies.
3. Latency
4G latency runs around 30–50 ms one-way. Good enough for video calls and most cloud apps; sometimes noticeable in real-time gaming or remote-control scenarios.
5G targets latency below 10 ms in well-tuned deployments. That matters for cloud gaming, AR/VR over cellular, and industrial applications more than for ordinary phone use.
4. Frequency bands
4G uses mostly sub-3 GHz spectrum: signals travel far and through walls but offer less raw bandwidth.
5G uses three rough categories: low-band (similar to 4G in reach but only modestly faster), mid-band (the realistic best-of-both-worlds, decent reach and good speed), and millimetre-wave high-band (fastest by far but very short range, often blocked by walls or hands). The "5G" you experience depends entirely on which band your phone is on.
5. Coverage
4G is essentially everywhere in developed countries and broad in most others.
5G coverage is rolling out at different speeds and on different bands by carrier. Two phones in the same city on different carriers can have very different 5G experiences.
6. Beyond phones
4G was built around mobile broadband for handsets.
5G has explicit design goals beyond phones: massive numbers of low-power IoT devices per cell, fixed-wireless home internet (replacing fibre/cable in some areas), low-latency industrial deployments. Some of the biggest 5G use cases aren't in your pocket at all.
When to Choose Each
Choose 4G if:
- Most everyday browsing, social, video, and calls — the speed is genuinely sufficient.
- Travelling outside major metro areas, where 5G coverage may be patchy.
- Older phones that don't support 5G — there's no benefit to switching plans purely for the label.
- Battery-conscious use; LTE is well-tuned for power efficiency.
Choose 5G if:
- Heavy mobile downloads or uploads — large file syncs, on-device backups.
- Cloud gaming or AR/VR experiences over cellular where latency matters.
- Areas with strong 5G mid-band rollout where the real speed gain is meaningful.
- Fixed-wireless home internet in regions where wired options are weak or expensive.
- Future-proofing a new phone you'll keep for several years.
Worked example
Two friends on the same street load the same news article at the same time. Friend A is on LTE, friend B is on 5G mid-band. The article appears within a fraction of a second on both — the bottleneck is the server and the page weight, not the radio. The same evening they both download a 4 GB game update; friend B finishes meaningfully faster. The 5G advantage shows up most clearly at the heaviest end of network use, not the everyday end.
Common Mistakes
- "5G is always faster." 5G low-band is sometimes barely faster than good LTE. Speed depends on the band, the carrier, and where you are.
- "5G drains my battery." Modest impact on modern phones; the tools that drain battery are screen brightness, GPS, and active high-bandwidth use, not the standard itself.
- "5G is dangerous." 5G uses non-ionising radio frequencies similar to other wireless systems, well within established safety limits set by international bodies.
- "My phone says 5G, so I have 5G." Some phones display 5G when they're on LTE with a 5G control link ("5G E" branding from a few years ago is the well-known example). The icon is not always a guarantee.