What 5G changes, technically
5G New Radio is the fifth-generation mobile standard. Its three headline improvements are much higher capacity, substantially lower latency, and the ability to support a far greater density of connected devices in the same area. For a home or office user, the capacity and latency improvements are the ones you will actually feel.
Latency matters more than most people expect. A 4G link typically adds tens of milliseconds of round-trip delay; a well-configured 5G link can cut that noticeably. That shows up as video calls that feel less like walkie-talkies and cloud applications that respond more immediately, even when the raw download figure has not changed much.
5G also uses wider channels and more advanced antenna techniques, including massive MIMO, where the mast uses many antenna elements to focus energy toward individual devices rather than spraying it across a whole sector. This is why 5G capacity per site is so much higher than 4G even on comparable spectrum.
Sub-6 GHz versus millimetre wave
Two very different things are sold under the same 5G label. Sub-6 GHz 5G operates in frequency ranges close to those used by 4G and behaves similarly in terms of range and building penetration, while delivering considerably more capacity. This is the variety used for most fixed-wireless home and office service worldwide.
Millimetre-wave 5G uses much higher frequencies and offers extraordinary speeds over very short distances. It struggles with walls, foliage and even heavy rain, and is generally deployed in dense urban hotspots rather than as a broad coverage layer. Do not buy equipment on the strength of millimetre-wave speed demonstrations unless you know that is what is being deployed at your address.
Most 5G customer premises equipment sold for home use targets sub-6 GHz, and that is the right expectation to set. It gives a meaningful uplift over 4G where deployed, not the laboratory figures used in launch announcements.
Technician’s tip
Before buying any 5G router, confirm what technology is actually live at your specific address — not your district, your address. A 5G router on a 4G-only site is simply an expensive 4G router.
Non-standalone and standalone deployments
Most early 5G networks are non-standalone, meaning the 5G radio carries data but the connection is anchored to an existing 4G core network. This works well and is invisible in day-to-day use, but it means the low-latency benefits are partly constrained by the 4G anchor.
Standalone 5G runs on a 5G core end to end and is where the full latency and network-slicing benefits appear. The transition is gradual everywhere in the world, and your router will usually report which mode it is operating in on its status page.
Practically, this affects buying decisions very little. A sub-6 GHz 5G router works on either deployment. It is worth knowing mainly so that you understand why your measured latency may not match the figures in general 5G explainers.
Do you actually need it?
Be honest about your usage. A household of four people browsing, streaming in high definition and taking video calls is well served by a solid 4G connection. The situations that genuinely benefit from 5G are high device counts, heavy simultaneous video, large file transfers, and work that is sensitive to latency such as remote desktop or competitive gaming.
There is also a signal-quality threshold to respect. A 5G router on a weak 5G signal will often fall back to 4G anyway, or hold a poor 5G connection that performs worse than a clean 4G one. The money is usually better spent on a good 4G router plus a properly installed external antenna.
Where 5G is strong at your address, fixed-wireless 5G is the closest thing to fibre performance without anyone trenching a cable to your gate, and it is a genuinely excellent option for a busy home or an office.
- Strong confirmed 5G at your address and more than about ten active devices — 5G is worth it.
- Work that depends on responsiveness rather than bulk downloads — 5G helps noticeably.
Indoor versus outdoor 5G equipment
Indoor 5G customer premises equipment is a single unit you place near a window, plug into the mains and configure in a few minutes. It is by far the easier option and is the right starting point in an area with good signal.
Outdoor units mount on an external wall or pole, put the radio and antenna outside where the signal is strongest, and feed the building over an Ethernet cable, usually with power over that same cable. On a difficult site this approach recovers signal that no indoor unit can reach, because it removes the walls from the radio path entirely.
The trade-off is installation. An outdoor unit needs a mount, a weatherproofed cable entry, surge protection on the cable run and someone comfortable working at height. Budget for the installation as part of the decision, not as an afterthought.