What to check before buying
Establish whether the incoming mobile connection is usable before spending on equipment to distribute it around the house. Ofcom’s postcode checker can help shortlist networks, but its coverage predictions may differ from reception at an individual property.
4G or 5G home router
Consider when: A network provides usable service at the intended router position; choose 5G equipment for its 5G capability only where that network’s local service is useful to you.
Bear in mind: A 5G-capable router cannot create local 5G coverage, and advertised device speeds do not establish speeds at home.
External cellular antenna
Consider when: Testing points to weak cellular reception at a compatible router, rather than weak Wi-Fi elsewhere in the house.
Bear in mind: Matching the connector alone is not enough; bands, router settings and the proposed installation also matter.
In-home Wi-Fi or wired distribution
Consider when: The connection works adequately near the router but not in the room where you work.
Bear in mind: Mesh, an access point or powerline equipment cannot improve the mobile service feeding the router.
| Concern |
What to check |
Who this matters to |
| Network and reception |
Compare networks at your postcode using Ofcom’s indoor and outdoor coverage information. Where possible, test the chosen SIM at the planned router position during working hours. |
If work calls rely on this connection, I need usable reception inside the house, not just a promising coverage map. Around 36% of consumers put network reception first. |
| Plan and data |
Compare the household’s data use with the plan allowance, fair-use or speed conditions, and the written contract terms. |
With work and household devices sharing one service, I want an allowance and terms that fit how we use it. For around 29% of consumers, plan suitability is the primary concern. |
| Router and antenna compatibility |
Check the router’s supported service and, if an antenna is needed, the relevant bands, ports and configuration requirements for the exact version. |
When reception remains weak at the router, I need to know that any antenna will work with my equipment before arranging an installation. Hardware compatibility comes first for around 21% of consumers. |
| Coverage inside the home |
Compare a wired or near-router connection with one in the work room. If the incoming connection is adequate, check placement before choosing mesh, an access point or powerline equipment. |
If calls work beside the router but drop out at my desk, I need the connection to reach that room. Around 14% of consumers prioritise in-home distribution. |
Joybuy options for in-home coverage
These powerline and mesh products address a work room that has poor connectivity despite an adequate connection at the router. Neither supplies or improves the incoming 4G or 5G service.
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TP-Link TL-PA8010P KIT AV1300 Gigabit Passthrough Powerline Adapter Kit
Consider this kit for a wired connection in a work room when the connection at the router is already adequate. It uses the home’s electrical wiring; check how well it works between the outlets you intend to use. It will not improve weak mobile reception.
Joybuy
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TP-Link Deco BE65 BE9300 Tri-Band Wi-Fi 7 Mesh System (3-Pack)
Consider this three-pack when Wi-Fi is weak in rooms away from a router that already has an adequate connection. Check how it will connect to your existing router before buying. Mesh distributes that connection around the home; it does not improve the incoming mobile service.
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Common questions
Does Ofcom’s checker guarantee indoor 4G or 5G reception?
No. Ofcom’s results guide your network shortlist, but walls and other local conditions can make reception at your property differ from the prediction. Compare networks at your postcode and, where possible, test at the intended router position.
Is weak mobile reception or indoor Wi-Fi causing the problem?
Compare a wired connection or a device close to the cellular router with the connection in the problem room. If both are poor, investigate the incoming mobile service and router position; if only the distant room struggles, address Wi-Fi distribution. As Ofcom notes, Wi-Fi cannot outperform the service feeding it.
When is an external 4G or 5G antenna worth considering?
Consider one when testing points to inadequate cellular reception at a router that supports an external antenna. Check the exact router version, active cellular bands, antenna frequency support, connectors and any required settings; an antenna is not an automatic upgrade to a good signal.
Do I need permission or an installer for an outdoor antenna?
Check the proposed installation and property before mounting an antenna outdoors. For homes in England, GOV.UK advises asking the local planning authority if there is doubt about permitted development, and separate consents may apply. Elsewhere in the UK, check the relevant local rules and property permissions; arrange suitable help for mounting work you cannot carry out safely.
What matters in a data plan used as the main home connection?
Check whether the allowance and terms fit your combined work and household use. Read the written contract summary and full terms for fair-use or speed restrictions, contract length, cancellation conditions and stated changes during the contract; Ofcom advises checking restrictions even on plans labelled unlimited.