Yes. The C200 is tuned to Band 20 (800 MHz FDD LTE), which all four UK MNOs — EE, O2, Vodafone and Three — use for rural and in-building 4G coverage. It also works with every MVNO that rides on those networks, including BT Mobile, Plusnet, giffgaff, Sky Mobile, Tesco Mobile, Lebara, VOXI, Asda Mobile, Talkmobile, Lycamobile, SMARTY, iD Mobile and Virgin Mobile. There is no SIM lock or carrier-specific configuration — insert any compatible SIM and the booster amplifies the Band 20 signal automatically.

Yes, but with an important caveat: the C200 improves signal strength and reliability, which in turn raises throughput. If your phone was stuck on one bar and dropping to Edge, the C200 can lift you to a stable 4G connection with dramatically faster downloads and fewer disconnects. However, maximum speed is still capped by the mast's capacity and how many users are connected. Expect better bars, lower latency, fewer timeouts and steadier video calls — not a speed increase beyond what your local mast can deliver on Band 20.

200 m² (about 2,153 sq ft) is enough for most 3–4 bedroom detached homes, large semis and two-storey terraces, provided the indoor panel antenna is mounted centrally. Open-plan layouts benefit most; thick internal walls, metal partitions and multiple floors can reduce effective coverage. If your property is over ~2,200 ft², has three storeys, or is a commercial building, you may need a higher-gain multi-band system instead. As a rule of thumb: if your home fits on a single floorplan under 200 m², the C200 will cover it well.

Yes. The C200 is Ofcom licence-exempt: it has a built-in output power cap at 20 dBm EIRP, operates on the permitted Band 20 800 MHz frequency, and includes AGC automatic gain control — all required under Ofcom's 2024 licence-exempt repeater technical standards. No application, registration, frequency assignment or fee is needed. Using a non-compliant amplifier that exceeds the power limit or transmits on restricted bands is illegal in the UK and can disrupt nearby masts.

Most customers complete the install in 20–25 minutes without an engineer. The six steps are: survey outdoor signal, mount the outdoor omni antenna, run the 10 m coax indoors, mount the indoor panel antenna, connect both N-type cables, then plug in the UK 3-pin adapter. Basic DIY skills are enough — a drill for the exterior wall entry point is the only power tool required. The 10 m cable reaches most upstairs rooms from a roof/eaves mount; if you need a longer run (20–50 m), order the cable upgrade and the install takes only a few minutes longer.

The C200 cannot create signal from nothing. It amplifies only what the outdoor antenna can already capture. If you have literally zero bars outside (below roughly −120 dBm), the booster will have nothing to work with. You need at least 1–2 usable bars outdoors (about −105 to −115 dBm) for the system to deliver a strong indoor result. If your outdoor signal is marginal but nonzero, upgrading the outdoor antenna to the high-gain Yagi directional model (available as an accessory) and pointing it directly at the nearest mast 5–10 km away can make the difference.

Yes. The C200 is VoLTE-ready — it carries both 4G data and VoLTE voice calls over Band 20 800 MHz. This is important because EE, Vodafone and Three have been phasing out 2G and 3G legacy voice networks. If your phone supports VoLTE (check in Settings → Mobile Network → VoLTE on most devices) and your carrier enables VoLTE on Band 20, you can make and receive clear calls through the boosted signal. Note: if your phone is older and only supports 2G/3G voice, calls will not work through the C200 even though data will.

The C200 consumes ≤ 12 W of power — less than a typical LED desk lamp. At UK average electricity prices, running it 24/7 costs approximately £12–18 per year. It has no heating element, no cooling fan and no standby spike; the AGC actually reduces power draw when signal is strong. Compared to the cost of dropped business calls, missed bookings or unreliable home office connectivity, the running cost is negligible.

For rented properties: check your tenancy agreement. The outdoor antenna needs to be fixed to an exterior wall, chimney or pole, which usually requires landlord permission. Many landlords allow discreet bracket mounts that can be removed without damage. For listed buildings or conservation areas: external antenna mounting may require planning permission or listed-building consent. The C200 is Ofcom-exempt technically, but physical mounting restrictions apply regardless. If you cannot drill outside, a window-mounted directional antenna aimed at the nearest mast is a partial workaround — though performance will be lower than a proper exterior mount.

You get a 365-day money-back guarantee. If the C200 does not improve your 4G signal or VoLTE call quality within 12 months of purchase, return it by mail for a full refund — return shipping is free within the UK. You also receive lifetime UK-based technical support by email and live chat to help with antenna positioning, band checks and troubleshooting. The 365-day window is deliberately long because some buyers only discover signal problems in winter when the weather worsens or after moving furniture that blocks signal paths.