3G - Car Vehicle Caravan (EE/O2/Vodafone/Three) Mobile Signal Booster
✓ Compatible with multiple users and devices
✓ Complete kit: all parts included
✓ Simpler Install and Maintenance
Enhance your mobile signal experience with a range of boosters, from 3G and car vehicle boosters to caravan signal enhancement. Choose from top providers like EE, O2, Vodafone, and Three for reliable UK mobile signal solutions.
Boost4U CVW — Car Mobile Signal Booster for Calls UK
The Boost4U CVW (£139.99) is a Band 1 (2100 MHz) in-vehicle mobile signal booster that amplifies 3G UMTS voice calls, SMS and mobile data for EE, O2, Vodafone, Three, giffgaff, Lebara, Lycamobile, Sky Mobile, TalkMobile, TalkTalk and Tesco Mobile networks inside cars, vans, trucks, motorhomes and boats, with 45 dB uplink / 40 dB downlink gain, 10 dBm output, support for 10 simultaneous users, a magnetic-mount external aerial, an interior antenna and a 5V DC car power adapter, providing reliable 3G calls, SMS and mobile data while driving across rural and urban UK roads.
Designed specifically for UK drivers who suffer from dropped calls, "No Service" errors and unsent texts while on the move, the CVW captures weak 2100 MHz Band 1 signals through a roof-mounted external aerial, amplifies them inside the vehicle cabin, and rebroadcasts a strong signal to all passengers' phones. Unlike home boosters, the CVW is compact, 12V/5V powered, and engineered for the unique signal challenges of moving vehicles — metal bodywork, tinted windows, rural dead zones and motorway blackspots.
Enhanced Signal Strength
Experience a significant boost in your 3G signal with our mobile signal booster, designed specifically for EE, O2, Vodafone, and Three networks. Say goodbye to dropped calls and enjoy uninterrupted conversations while on the road.
User-Friendly Installation
Forget complicated setups! Our mobile signal booster comes with a complete kit and straightforward instructions, allowing you to install it quickly and easily without any technical expertise.
Multi-User Support
Connect up to 10 devices simultaneously, ensuring that everyone in your vehicle can enjoy enhanced mobile connectivity. Perfect for families or groups traveling together.
Compact and Portable Design
With a sleek, compact design comparable to a cigarette box, this booster is easy to carry and fits seamlessly into any vehicle, making it ideal for caravans, cars, and trucks.
Automatic Signal Adjustment
Equipped with automatic gain control, the booster adjusts its performance based on external signal strength, ensuring optimal reception at all times without manual intervention.
Eco-Friendly Operation
Designed with low radiation output, our mobile signal booster not only enhances your connectivity but also minimizes potential harm from mobile phone radiation, promoting a healthier environment.
3 Steps to Full Bars
1. Place the Outdoor Antenna
Mount the antenna where you get the best signal.
2. Connect the Booster Inside
Plug in the booster and connect to the antenna.
3. Enjoy Full Bars Everywhere
Clear calls, fast data, and no more dead zones.
3G Mobile Signal Booster, Car Vehicle Booster, Caravan Signal Booster, EE Mobile Signal, O2 Mobile Booster, Vodafone Signal Enhancement, Three Network Booster, UK Mobile Signal Solutions
It boost 3G signal on 2100MHz frequency, the frequency used in UK used by mobile networks to deliver their mobile services: 3G, 3.5G (also known as HSDPA provides faster data rates than 3G). It can boost all networks on Three, EE, O2, Vodafone, BT, giffgaff, TalkTalk, Lebara, Lyca Mobile, Asda, Tesco, iD Mobile, Freedom Pop, Virgin, Orange, Plusnet, Sky Mobile, Smarty Mobile, T-Mobile and The People's Operator for improving 3G signal.
Eliminates Dropped Calls
Reliable 3G Data
Vehicle Signal Booster
Upgrade External Aerial
External fishtail aerial connects via 3 meter coax lead to the signal booster unit which is located inside the car. The aerial with Three magnets, its more stable.
Features
1. Convenient--- small beautiful appearance (cigarette box size), easy to carry, suitable for a variety of small space signal coverage.
2. Easy to use--- needs no complicated installation.
3. Open--- according to the external signal strength, automatic gain control ensure the signal.
4. Flexible---- can choose different power adapters, such as 220VAC adapter, mobile power, vehicle power adapter etc.
5. Low radiation--- a good signal coverage can reduce the radiation intensity of the mobile phone itself, effectively reduce the mobile phone radiation may harm the human body.
6. Environmental protection--- when you do not need to use the telephone or the Internet, can be removed at any time or unplug the power, elimination of radiation.
Specification
| Application & Bands | [Car, Vehicle 3G] (Band 1) |
| Country | United Kingdom |
| Boost All On | EE (3G) O2 (3G) Vodafone (3G) Three (3G) Asda (3G) BT (3G) Freedom Pop (3G) Giffgaff (3G) iD Mobile (3G) Lebara (3G) Lycamobile (3G) Orange (3G) Plusnet Mobile (3G) Sky Mobile (3G) Smarty Mobile (3G) Talkmobile (3G) TalkTalk (3G) Tesco (3G) The People's Operator (3G) T-Mobile (3G) Virgin (3G) |
| Users Supporting | 10 Simultaneously |
| Band | Single Band 1 |
| Frequency | 2100MHz |
| Gain(dB) | Uplink 45±2; Downlink 40±2 |
| Up-link | 1930~1990 MHz |
| Down-link | 2110~2180 MHz |
| Export Power(Po) | Uplink 10; Downlink 10 |
| Power Adapter | 5V DC |
| What’s Included | 1 x Car Signal Booster / Amplifier 1 x External Aerial 1 x Interior Aerial 1 x 5V DC Car Power Adapter |
How It Works
1
The powerful antenna reaches out to access a voice and 3G, 4G, and LTE data signal, and delivers it to the booster
2
The booster receives the signal, amplifies it, and serves as a relay between your phone and the nearest cell tower.
3
Your devices get increased cell reception, and calls and data are fed through the booster back to the network.
- Outside Antenna: Pulls in tower Signal.
- Signal Booster: Amplifies the Signal.
- Inside Antenna: Re-broadcasts Signal.
- Mobile Phone: Gets Boosted Signal.
Installation
- Mount external aerial on top back.
- Install the booster and interior antenna.
- External aerial connect to "BS" on the booster, and interior antenna connect to "MS".
IMPORTANT NOTE:
DO NOT POWER ON THE DEVICE UNTIL YOU HAVE COMPLETED THIS SETUP.
Read more about User Manual Documentation.
Application Scenarios
Full Technical Specifications
| Parameter | Value |
|---|---|
| Model | CVW / MBCVWgb |
| Application | Car, Van, Truck, Motorhome, Boat, Vehicle |
| Frequency Band | Band 1 (2100 MHz) FDD UMTS |
| Uplink Frequency | 1930 – 1990 MHz |
| Downlink Frequency | 2110 – 2180 MHz |
| Supported Services | 3G UMTS (Voice Calls, SMS & Mobile Data) |
| Uplink Gain (Gp) | 45 ± 2 dB |
| Downlink Gain (Gp) | 40 ± 2 dB |
| Max Output Power (Po) | Uplink 10 dBm / Downlink 10 dBm |
| Simultaneous Users | Up to 10 |
| Supported Networks (3G) | EE, O2, Vodafone, Three, giffgaff, Lebara, Lycamobile, Sky Mobile, TalkMobile, TalkTalk, Tesco Mobile |
| External Aerial | Magnetic-mount, roof/bonnet placement |
| Interior Aerial | Compact cabin antenna |
| Power Adapter | 5V DC car cigarette lighter / USB |
| Power Consumption | ≤ 5 W |
| Operating Temperature | -20°C to +60°C |
| Certification | UKCA / CE, Ofcom Licence-Exempt |
| Price | £139.99 GBP |
What's in the Box
| Item | Quantity | Description |
|---|---|---|
| CVW Car Booster Unit | 1 | Compact Band 1 amplifier with LED indicators |
| External Aerial | 1 | Magnetic-mount, roof/bonnet, weatherproof |
| Interior Aerial | 1 | Compact cabin antenna, adhesive mount |
| 5V DC Car Power Adapter | 1 | Cigarette lighter / USB power |
| Cable Set | 1 | Connection cables for aerial and booster |
| User Manual | 1 | Step-by-step vehicle installation guide |
How the CVW Works in Your Vehicle
- Receives: The magnetic-mount external aerial on the roof captures weak 2100 MHz Band 1 signal from the nearest all networks mast, even while driving.
- Amplifies: The compact booster unit amplifies the signal by 45 dB (uplink) and 40 dB (downlink), filtering out noise and interference.
- Broadcasts: The interior aerial rebroadcasts the boosted signal throughout the vehicle cabin, reaching all passengers' phones.
- Returns: Uplink signals from passengers' phones are amplified and sent back to the mast via the external aerial.
Compatible Vehicles
| Vehicle Type | Suitability | Notes |
|---|---|---|
| Cars / Saloons / Hatchbacks | Excellent | Standard installation, magnetic roof aerial |
| SUVs / 4x4s | Excellent | Larger cabin, interior aerial on dashboard |
| Vans / Delivery Vehicles | Very Good | External aerial on roof, interior in cab |
| Trucks / HGVs | Very Good | 24V adapter may be needed (check) |
| Motorhomes / Campervans | Excellent | Can be semi-permanent installed |
| Caravans | Good | Works when towed, external aerial on roof |
| Boats / Narrowboats | Good | Marine environment, ensure waterproof connections |
| Taxis / Private Hire | Excellent | Reliable calls for drivers and passengers |
Pros & Cons
Advantages
- Vehicle-specific design: The only booster in the Boost4U range designed for cars, vans and motorhomes.
- Band 1 2100 MHz: Best building/vehicle penetration band; works with EE, O2, Vodafone, Three and all their MVNOs.
- Improves calls & SMS: Eliminates dropped calls and unsent texts while driving.
- 10 simultaneous users: Enough for all passengers in a car or van.
- 5V DC car power: Plugs into cigarette lighter or USB — no mains needed.
- Magnetic external aerial: Quick installation on roof or bonnet, no drilling.
- Compact size: Booster unit fits under seat, in glove box or on dashboard.
- Ofcom legal: Licence-exempt, UKCA/CE certified, automatic gain control.
- Affordable: At £139.99, one of the cheapest vehicle call boosters in the UK.
- 365-day returns: Longest money-back guarantee in the market.
Disadvantages
- 3G only (no 4G/5G): Boosts 3G voice calls, SMS and mobile data on Band 1. Does NOT boost 4G LTE or 5G.
- 3G only (no 4G/5G): Band 1 (2100 MHz) is used by ALL UK networks for 3G. Universal compatibility.
- Requires outdoor signal: Must have 1–2 bars outside the vehicle. Cannot create signal from nothing.
- Signal varies while driving: As you move between masts, signal strength fluctuates. The booster handles this but may have brief dropouts in very remote areas.
- External aerial on roof: Magnetic mount may not adhere to glass roofs or non-metal body panels.
- Standard delivery 10–15 days: Not next-day delivery.
- No 5G support: No consumer booster currently supports 5G.
- Installation in vehicle: Requires routing cables from roof to cabin, which may be tricky in some vehicles.
- 5V power only: May need adapter for 24V truck systems.
- Metal vehicle body: The car body itself blocks signal — the external aerial must be outside (on roof) to work.
Supported Networks Detail
| Network | 3G Calls/SMS/Data | Notes |
|---|---|---|
| EE | Yes | Full Band 1 3G support |
| O2 | Yes | Full Band 1 3G support |
| Vodafone | Yes | Full Band 1 3G support |
| Three | Yes | Full Band 1 3G support |
| BT Mobile | Yes | Uses EE infrastructure |
| ASDA Mobile | Yes | Uses EE infrastructure |
| Virgin Mobile | Yes | Uses EE infrastructure (from 2024) |
| giffgaff | Yes | Uses O2 infrastructure |
| Sky Mobile | Yes | Uses O2 infrastructure |
| Tesco Mobile | Yes | Uses O2 infrastructure |
| Lebara | Yes | Uses Vodafone infrastructure |
| Lycamobile | Yes | Uses Vodafone infrastructure |
| Talkmobile | Yes | Uses Vodafone infrastructure |
| TalkTalk Mobile | Yes | Uses Vodafone infrastructure |
| iD Mobile | Yes | Uses Three infrastructure |
| Smarty | Yes | Uses Three infrastructure |
| Plusnet Mobile | Yes | Uses EE infrastructure |
| Freedom Pop | Yes | Uses Three infrastructure |
| The People's Operator (TPO) | Yes | Uses EE infrastructure |
Installation Guide for Vehicles
- Find the signal: Park in an area with 1–2 bars of all networks signal. Use your phone to confirm Band 1 (2100 MHz) is available.
- Mount external aerial: Place the magnetic-mount aerial on the centre of the vehicle roof (best signal) or on the bonnet. Ensure it is flat and secure.
- Route cable: Run the aerial cable through the door rubber seal or window gap into the cabin. Avoid pinching the cable.
- Connect booster: Plug the external aerial cable into the "BS" port on the booster unit. Connect the interior aerial to the "MS" port.
- Place interior aerial: Position the interior aerial on the dashboard or under a seat, facing the passenger area.
- Power on: Plug the 5V DC adapter into the cigarette lighter or USB port. The booster will calibrate automatically (10–15 seconds).
- Test: Check signal bars on your phone. Make a test call. Adjust aerial position if needed.
Installation time: 15–30 minutes. Tools needed: None (magnetic mount, no drilling). Cable ties recommended for neat cable routing.
Frequently Asked Questions
Will the CVW work in my car?
Yes, the CVW works in any car, van, truck or motorhome with a 12V/5V power outlet and a metal roof for the magnetic aerial. It supports EE, O2, Vodafone, Three and all their MVNOs (giffgaff, Sky, Lebara, Lycamobile, Tesco, TalkTalk, TalkMobile). You need at least 1–2 bars of outdoor signal.
Does the CVW improve 4G data in the car?
No. The CVW is a Band 1 (2100 MHz) 3G booster that improves 3G voice calls, SMS and mobile data. It does not boost 4G LTE or 5G. For in-car 4G data, consider a mobile WiFi hotspot or a 4G router with external antenna.
Will it work with EE or Three?
No. The CVW operates on Band 1 (2100 MHz), which is used by all UK networks for 3G calls. EE uses Band 3 (1800 MHz) and Three does not operate a 3G network. The CVW will not improve EE or Three calls.
How is the CVW powered?
The CVW uses a 5V DC car power adapter that plugs into the vehicle's cigarette lighter socket or USB port. It consumes approximately 5 W, so it will not drain your car battery when the engine is running. Turn it off when the engine is off to avoid battery drain.
Is the CVW legal to use while driving?
Yes. The CVW is Ofcom licence-exempt with UKCA/CE certification. It operates within Ofcom's power limits and includes automatic gain control to prevent network interference. It is legal to use in any vehicle on UK roads.
Do I need to drill holes in my car?
No. The external aerial uses a strong magnetic mount that attaches to the vehicle roof or bonnet. The cable routes through the door rubber seal. No drilling or permanent modification is required.
Will the magnetic aerial damage my car paint?
The magnetic aerial has a rubberised base that protects the paintwork. It is designed for temporary or permanent vehicle use. For long-term installation, we recommend periodically cleaning under the aerial to prevent dirt buildup.
How much does the CVW cost?
£139.99 GBP including the booster unit, external magnetic aerial, interior aerial, 5V DC car power adapter, cables and user manual. Free UK shipping. 365-day money-back guarantee included.
What if it doesn't work in my vehicle?
The CVW comes with a 365-day money-back guarantee. If it does not improve your in-car signal for any reason within 365 days, return it for a full refund (minus shipping costs). Most signal issues are resolved by repositioning the external aerial.
Can I use the CVW in a motorhome or caravan?
Yes. The CVW works well in motorhomes, campervans and caravans. For permanent installation in a motorhome, you can mount the external aerial on the roof and route cables internally. The 5V adapter works from the vehicle's leisure battery or cigarette lighter.
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Powerful Signal Boost
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Fast Speeds
Crystal Clear Calls
Wide Coverage Area
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