Specifications

What Is in the Box

Compatible UK Mobile Networks

The CVDW boosts Dual Band 3 & 1 (800 & 2100 MHz) 2G Voice, deployed by every major UK operator. Network-by-network compatibility:

Pricing, Shipping & Returns

Pros & Cons

An objective assessment based on the CVDW's hardware, price point and vehicle use case.

Pros

• Purpose-built for vehicles: Magnetic roof antenna, 5V DC car power adapter and compact booster unit designed for in-car use.
• All-network Dual Band 3 & 1 support: Dual Band 3 & 1 1800/2100 MHz covers EE, O2, Vodafone, Three and all MVNOs plus their MVNOs — one device for all UK networks.
• Plug-and-play install: Magnetic antenna sticks to the roof in seconds; most users complete setup in under 15 minutes.
• Up to 5 bars in-vehicle: In areas with at least 1 bar outdoor signal, the CVDW delivers full bars inside the cabin or caravan.
• Multiple simultaneous users: No per-device limit — driver, passengers and caravan occupants can all connect.
• 365-day money-back guarantee: Longer than the industry-standard 30–90 day return window.
• Free UK shipping: No hidden delivery costs.
• Ofcom licence-exempt: Operates within UK mobile repeater regulations.

Cons

• Dual-band (3G+2G) (Dual Band 3 & 1): Does not boost 5G, 3G or higher 2G bands (Band 3 / 7 / 38). In areas with no 1800/2100 MHz 2G/3G, coverage is limited.
• 100 m² max coverage: Covers a car cabin or small caravan; large motorhomes may need an extended antenna kit.
• Requires at least 1 bar outdoors: A booster cannot create signal where none exists — the magnetic antenna must receive a usable signal.
• Standard cable is 5 m: Larger vehicles or caravans may need a cable extension.
• No built-in LCD / signal meter: Uses LED indicators only — fine for most users but less precise for optimisation.
• Standard delivery 10–15 days: Not next-day; express delivery available at extra cost.
• 5V DC only (included): For 240 V mains use in a static caravan, an optional AC adapter is needed.

How the CVDW Works

The CVDW is a bidirectional RF repeater designed for mobile environments. Three-step signal path:

1. Capture: The magnetic-mount outdoor antenna on the vehicle roof picks up the weak 1800/2100 MHz 2G Voice signal from the nearest mast.
2. Amplify: The booster unit filters and amplifies both downlink (tower-to-phone) and uplink (phone-to-tower) signals by 45/50 dB.
3. Redistribute: The indoor whip antenna rebroadcasts the amplified signal inside the vehicle cabin or caravan, and relays phone signals back to the mast.

Installation Steps (Under 15 Minutes)

1. Find the strongest signal spot on the vehicle roof (usually the centre or front) using your phone's signal bars.
2. Place the magnetic-mount outdoor antenna on the roof at that spot. The magnet holds it securely at motorway speeds.
3. Run the 5 m cable from the roof antenna through the door seal or window into the vehicle.
4. Place the booster unit under a seat or in the glove compartment. Screw on the indoor whip antenna.
5. Plug the 5V DC adapter into the cigarette-lighter socket. The LED indicators will show power and signal status.
6. Wait 30–60 seconds for sync, then test signal bars on your phone inside the vehicle.

Frequently Asked Questions (10 Real UK User Questions)

1. Does the CVDW work with 5G?

No. The CVDW is a 2G Voice Dual Band 3 & 1 (800 & 2100 MHz) booster only. It does not amplify 5G frequencies. However, 2G Voice remains the primary voice and data layer for most UK users on the move, and VoLTE calls work perfectly. For 5G boosting in vehicles, consider a multi-band 5G vehicle booster.

2. Will this booster work in my car on EE, O2, Vodafone or Three?

Yes. EE and Vodafone use Dual Band 3 & 1 (800 & 2100 MHz) for 2G Voice coverage on UK roads. The CVDW is compatible with EE, O2, Vodafone, Three and all their MVNOs (BT, ASDA, Virgin, Orange, T-Mobile, Plusnet, TPO). All four major UK networks (EE, O2, Vodafone, Three) are supported on Band 3 for 2G Voice, with O2 and Vodafone additionally supported on Band 1 for 3G data calls.

3. Can I use the CVDW in a caravan or motorhome?

Yes. The CVDW is designed for cars, vans, motorhomes and static caravans. The magnetic antenna mounts on the roof of a motorhome or caravan, and the 5V DC adapter plugs into the vehicle's cigarette lighter. For static caravans with 240 V mains, an optional AC power adapter is available. The 100 m² coverage suits most caravan interiors.

4. Is a car mobile signal booster legal in the UK?

Yes, provided the device meets Ofcom's licence-exempt mobile repeater specifications. The CVDW is UKCA / CE certified and operates within Ofcom's Technical Standard for Mobile Repeaters, which permit licence-exempt use of repeaters that meet strict power and filtering limits. Uncertified, high-power boosters remain illegal.

5. Do I need an outdoor signal for the booster to work while driving?

Yes. A booster amplifies an existing signal — it cannot create one. You need at least 1 bar of usable 2G Voice (Dual Band 3 & 1) signal at the roof antenna. The CVDW works well while driving through rural areas with intermittent signal, as it continuously amplifies whatever signal the roof antenna receives. In complete blackspots with zero bars, no booster can help.

6. Will the magnetic antenna stay on at motorway speeds?

Yes. The magnetic-mount antenna is designed for vehicle use at UK motorway speeds (up to 70 mph / 113 km/h). The strong neodymium magnet holds firmly to steel roofs. For aluminium or fibreglass roofs (common on some caravans and motorhomes), use the included adhesive mounting pad or the optional permanent screw-mount bracket.

7. Can multiple passengers use the boosted signal at the same time?

Yes. The CVDW supports 15 simultaneous users and devices. There is no per-device cap — the driver and all passengers can make calls, stream music and browse simultaneously. Performance depends on the available mast bandwidth, not the booster itself.

8. How is the CVDW different from a home booster like the C100?

The CVDW uses a 5V DC car power adapter and a magnetic-mount roof antenna designed for vehicles, while the C100 uses a 240 V mains adapter and a wall-mounted outdoor antenna for fixed buildings. Both boost the same Dual Band 3 & 1 3G+2G frequency with 45/50 dB gain. The CVDW is for cars, vans and caravans; the C100 is for homes and offices.

9. What is the return policy and warranty?

The CVDW comes with a 365-day money-back guarantee — if you are not satisfied, return it within 365 days for a full refund. Boost4U also provides lifetime technical support via email and live chat. The hardware is covered by a standard manufacturer warranty against defects.

10. How long does UK delivery take and is shipping free?

Standard UK shipping is free and takes 10–15 business days. Orders are dispatched within 1–2 business days. Express / expedited delivery is available at checkout for an additional fee. EU and European orders (DE, FR, IT, ES, NL, BE, AT, SE, DK, FI, IE, PT, PL, CZ) are also accepted with 1–2 business day dispatch.

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