Calls - Car Vehicle Caravan (EE/ASDA/BT) Mobile Signal Booster
✓ Compatible with multiple users and devices
✓ Complete kit: all parts included
✓ Simpler Install and Maintenance
Enhance your mobile signal while on the move with a variety of boosters including car signal boosters for EE, BT, ASDA, and 4G LTE. Improve your UK mobile signal with our vehicle signal amplifiers.
Boost4U CVD — Car Mobile Signal Booster for Calls UK
The Boost4U CVD (£139.99) is a Band 3 (1800 MHz) in-vehicle mobile signal booster that amplifies 2G GSM voice calls and SMS for EE, BT, ASDA, T-Mobile, TPO, Virgin Mobile, TalkMobile, TalkTalk and Orange networks inside cars, vans, trucks, motorhomes and boats, with 10 dB uplink / 10 dB downlink gain, ≥ 27 dBm output, support for 10 simultaneous users, a magnetic-mount external aerial, an interior antenna and a 5V DC car power adapter, providing reliable hands-free calls and text messaging 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 CVD captures weak 1800 MHz Band 3 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 CVD 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 crystal-clear calls and fast 4G/LTE data with our mobile signal booster. Designed for vehicles, it amplifies weak signals, ensuring you stay connected even in remote areas.
User-Friendly Installation
No technical expertise required! Our mobile signal booster comes with a complete kit and straightforward instructions, allowing for quick and hassle-free installation in your car or caravan.
Multi-Device Compatibility
Support up to 10 devices simultaneously, making it perfect for families or groups traveling together. Enjoy uninterrupted connectivity for everyone on board.
Compact and Portable Design
With a sleek, compact design, this booster is easy to carry and fits seamlessly into any vehicle. Its small size does not compromise its powerful performance.
Automatic Signal Adjustment
Equipped with automatic gain control, the booster optimizes signal strength based on external conditions, ensuring consistent performance without manual adjustments.
Eco-Friendly Operation
Designed with low radiation emissions, our mobile signal booster not only enhances your connectivity but also minimizes potential harm to your health, making it a safe choice for all users.
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.
Mobile Signal Booster Car Signal Booster EE Mobile Booster BT Mobile Booster ASDA Mobile Booster 4G LTE Booster Vehicle Signal Amplifier UK Mobile Signal Enhancement
It boost Calls & 4G/LTE signal on 1800MHz frequency, the frequency used in UK used by mobile networks to deliver their mobile services: 2G (also known as GSM) and 4G. It can boost all networks on EE, BT, Asda, Virgin, The People's Operator, Orange, T-Mobile for improving Voice Calls & Text signal. It also can boost all networks on Three, EE, BT, Asda, Virgin, iD Mobile, Freedom Pop, Orange, Plusnet, Smarty Mobile, T-Mobile and The People's Operator for improving 4G LTE signal. If your phones support 4G Calling (also called Voice over LTE or VoLTE) and your area 4G Calling is available, with the booster you can make clearer voice calls using 4G network.
No Miss Important Calls
Wow 2G/4G Calls
Eliminates Dropped Calls
SMS Text Messages Quickly
Consistent Connection
Reliable 4G/LTE Data
Vehicle Signal Improved
4G/LTE Internet
Faster Uploads & Downloads
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 4G/LTE & Voice Calls] (Band 3) |
| Country | United Kingdom |
| Boost All On | EE (2G & 4G) Three (4G) ASDA (2G & 4G) BT (2G & 4G) Freedom Pop (4G) iD Mobile (4G) Orange (2G & 4G) Plusnet Mobile (4G) Smarty Mobile (4G) The People's Operator (2G & 4G) T-Mobile (2G & 4G) Virgin (2G & 4G) |
| Users Supporting | 10 Simultaneously |
| Band | Single Band 3 |
| Frequency | 1800MHz |
| Gain(dB) | Uplink 10; Downlink 10 |
| Up-link | 1710~1785 MHz |
| Down-link | 1805~1880 MHz |
| Export Power(Po) | ≥27dBm |
| 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 | CVD / MBCVDgb |
| Application | Car, Van, Truck, Motorhome, Boat, Vehicle |
| Frequency Band | Band 3 (1800 MHz) FDD GSM |
| Uplink Frequency | 1710 – 1785 MHz |
| Downlink Frequency | 1805 – 1880 MHz |
| Supported Services | 2G GSM (Voice Calls & SMS) |
| Uplink Gain (Gp) | ≥ 10 dB |
| Downlink Gain (Gp) | ≥ 10 dB |
| Max Output Power (Po) | ≥ 27 dBm |
| Simultaneous Users | Up to 10 |
| Supported Networks (2G) | EE, BT, ASDA, T-Mobile, TPO, Virgin Mobile, TalkMobile, TalkTalk, Orange |
| 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 |
|---|---|---|
| CVD Car Booster Unit | 1 | Compact Band 3 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 CVD Works in Your Vehicle
- Receives: The magnetic-mount external aerial on the roof captures weak 1800 MHz Band 3 signal from the nearest EE/BT mast, even while driving.
- Amplifies: The compact booster unit amplifies the signal by 10 dB (uplink) and 10 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 3 1800 MHz: Best building/vehicle penetration band; works with EE, BT 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
- 2G calls only: Does NOT boost 4G data or 3G. Only voice calls and SMS on Band 3.
- Not for EE/Three: Band 3 is used by EE/BT. EE and Three use different bands for calls.
- 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 | 2G Calls/SMS on Band 3 | Notes |
|---|
| Network | 2G Calls | 4G Data | Notes |
|---|---|---|---|
| EE | Yes | Yes | Primary network, full Band 3 support |
| BT Mobile | Yes | Yes | Uses EE infrastructure |
| ASDA Mobile | Yes | Yes | Uses EE infrastructure |
| Virgin Mobile | Yes | Yes | Uses EE infrastructure (from 2024) |
| Orange | Yes | Yes | Legacy EE brand |
| T-Mobile | Yes | Yes | Legacy EE brand |
| The People's Operator (TPO) | Yes | Yes | Uses EE infrastructure |
| Three | No (no 2G) | Yes | 4G data only on Band 3 |
| iD Mobile | No (no 2G) | Yes | Uses Three infrastructure, 4G only |
| Smarty | No (no 2G) | Yes | Uses Three infrastructure, 4G only |
| Plusnet Mobile | No (no 2G) | Yes | Uses EE infrastructure, 4G only |
| Freedom Pop | No (no 2G) | Yes | Uses Three infrastructure, 4G only |
| O2 | No | No | Uses Band 8/20, not supported |
| Vodafone | No | No | Uses Band 8/20, not supported |
Installation Guide for Vehicles
- Find the signal: Park in an area with 1–2 bars of EE/BT signal. Use your phone to confirm Band 3 (1800 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 CVD work in my car?
Yes, the CVD 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, BT and all their MVNOs (ASDA, Sky, T-Mobile, TPO, Tesco, TalkTalk, TalkMobile). You need at least 1–2 bars of outdoor signal.
Does the CVD improve 4G data in the car?
No. The CVD is a Band 3 (1800 MHz) 2G booster that improves voice calls and SMS only. It does not boost 4G LTE data. 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 CVD operates on Band 3 (1800 MHz), which is used by EE and BT for 2G calls. EE uses Band 3 (1800 MHz) and Three does not operate a 2G network. The CVD will not improve EE or Three calls.
How is the CVD powered?
The CVD 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 CVD legal to use while driving?
Yes. The CVD 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 CVD 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 CVD 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 CVD in a motorhome or caravan?
Yes. The CVD 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.
Related Blog Articles
- Best Car Mobile Signal Booster UK 2025 — Comparison & Reviews
- Boost4U CVD Review UK — In-Car Call Booster Tested
- How to Boost EE Signal in Car UK — Complete Guide
- Band 3 1800MHz Car Signal Booster for EE BT ASDA UK
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