4G LTE - 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 with the 4G LTE Mobile Signal Booster suited for EE, O2, Vodafone, and Three networks. Improve your vehicle's signal strength for a more reliable mobile connection, operating on the 800MHz frequency in the UK.
4G LTE Car Mobile Signal Booster UK — Boost4U CVC (Car / Vehicle / Caravan)
The Boost4U CVC is a plug-and-play 4G LTE (Band 20 / 800 MHz) mobile signal booster designed for cars, vans, motorhomes and static caravans, lifting in-vehicle signal from 0–1 bars to a full 5 bars, working with every major UK network including EE, O2, Vodafone and Three, priced at £139.99 with free UK shipping and a 365-day money-back guarantee.
Engineered for the UK's roads and rural campsites, the CVC amplifies the 800 MHz Band 20 4G LTE frequency used by all four national MNOs and their MVNOs. The complete vehicle kit includes the booster unit, a magnetic-mount outdoor antenna, an indoor antenna, cigarette-lighter power adapter, cable and mounting hardware — no engineer required, installs in under 15 minutes.
Compact Design
The 4G LTE Mobile Signal Booster boasts a sleek, compact design, comparable to a cigarette box. This makes it incredibly portable and easy to store, ensuring you can take it anywhere your travels lead.
User-Friendly Installation
Say goodbye to complicated setups! This booster is designed for effortless installation, allowing you to enhance your mobile signal without the need for professional assistance.
Automatic Signal Adjustment
Equipped with automatic gain control, this device intelligently adjusts to external signal strength, ensuring optimal performance and consistent connectivity wherever you are.
Versatile Power Options
Enjoy flexibility with various power adapter options, including 5VAC, mobile power, and vehicle power adapters, making it suitable for any situation or location.
Health-Conscious Technology
By improving signal coverage, this booster reduces the radiation intensity emitted by your mobile phone, promoting a healthier communication experience for you and your loved ones.
Eco-Friendly Operation
Designed with environmental protection in mind, the booster can be easily unplugged when not in use, eliminating unnecessary radiation and conserving energy.
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.
4G LTE Mobile Signal Booster Car Signal Booster EE O2 Vodafone Three Vehicle Signal Improvement UK Mobile Booster 800MHz Frequency Reliable Mobile Connection
It boost 4G/LTE signal on 800MHz frequency, the frequency used in UK used by mobile networks to deliver their 4G mobile services. It can boost all networks on Three, EE, O2, Vodafone, BT, Asda, Virgin, giffgaff, Talkmobile, Lyca Mobile, Tesco, iD Mobile, Freedom Pop, Orange, Plusnet, Sky Mobile, 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.
Note: This booster improve EE 4G LTE signal only on Band 20 - 800MHz frequency, EE 4G LTE Band 3 - 1800MHz frequency boosters, can purchase our 1800MHz boosters.
Reliable 4G/LTE Data
Faster Uploads & Downloads
Vehicle Signal Improved
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] (Band 20) |
| Country | United Kingdom |
| Boost All On | EE (4G) O2 (4G) Vodafone (4G) Three (4G) Asda (4G) BT (4G) Freedom Pop (4G) giffgaff (4G) iD Mobile (4G) Talkmobile (4G) Lyca Mobile (4G) Orange (4G) Plusnet Mobile (4G) Sky Mobile (4G) Smarty Mobile (4G) Tesco (4G) The People's Operator (4G) T-Mobile (4G) Virgin (4G) |
| Users Supporting | 10 Simultaneously |
| Band | Single Band 20 |
| Frequency | 800MHz |
| Gain(dB) | Uplink 45±2; Downlink 40±2 |
| Up-link | 832~862 MHz |
| Down-link | 791~821 MHz |
| Export Power(Po) | ≥10dBm |
| 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
Specifications
| Parameter | Value |
|---|---|
| Model | CVC / MBCVCgb |
| Product Type | 4G LTE Vehicle / Caravan Mobile Signal Booster |
| Frequency Band | Band 20 — 800 MHz (FDD LTE) |
| Uplink Frequency | 832 – 862 MHz |
| Downlink Frequency | 791 – 821 MHz |
| Max Gain | Up to 65 dB |
| Output Power | Up to 17 dBm (Ofcom licence-exempt limit) |
| Coverage | Up to 100 m² (vehicle cabin / small caravan interior) |
| Supported Networks (UK) | EE, O2, Vodafone, Three, BT Mobile, ASDA Mobile, giffgaff, Lebara, Lycamobile, Plusnet, Tesco Mobile, Vectone Mobile, SMARTY, iD Mobile |
| Supported Services | 4G LTE data, VoLTE calls, SMS |
| Simultaneous Users | Unlimited (multiple devices and users at once) |
| Power Supply | 12 V DC cigarette-lighter adapter (included); also works with 240 V AC via optional adapter |
| Dimensions (Booster Unit) | 150 × 100 × 28 mm |
| Weight | Approx. 380 g (booster only) |
| Installation | Plug-and-play; magnetic antenna mounts on roof in seconds |
| Cable Included | 5 m low-loss coaxial cable |
| Outdoor Antenna | Magnetic-mount omni-directional, 5 dBi |
| Indoor Antenna | Whip antenna, 3 dBi |
| Noise Figure | ≤ 5 dB |
| Operating Temperature | -10 °C to +55 °C |
| Certification | UKCA / CE / RoHS; Ofcom licence-exempt |
| Warranty | Lifetime technical support; 365-day money-back guarantee |
What Is in the Box
| Item | Quantity |
|---|---|
| 4G LTE Booster Unit (CVC) | 1 |
| Magnetic-Mount Outdoor Antenna (5 dBi) | 1 |
| Indoor Whip Antenna (3 dBi) | 1 |
| 5 m Low-Loss Coaxial Cable | 1 |
| 12 V Car Cigarette-Lighter Power Adapter | 1 |
| Mounting Bracket & Cable Ties | 1 set |
| Quick Start Guide (English) | 1 |
Compatible UK Mobile Networks
The CVC boosts Band 20 (800 MHz) 4G LTE, deployed by every major UK operator. Network-by-network compatibility:
| Network | Band 20 (800 MHz) 4G | VoLTE | CVC Compatible |
|---|---|---|---|
| EE | Yes | Yes | Yes |
| O2 | Yes | Yes | Yes |
| Vodafone | Yes | Yes | Yes |
| Three | Yes (shared with O2 via MOCN) | Yes | Yes |
| BT Mobile (EE) | Yes | Yes | Yes |
| giffgaff (O2) | Yes | Yes | Yes |
| Tesco Mobile (O2) | Yes | Yes | Yes |
| Lebara (Vodafone) | Yes | Yes | Yes |
| Lycamobile (O2) | Yes | Yes | Yes |
| Plusnet (EE) | Yes | Yes | Yes |
| ASDA Mobile (Vodafone) | Yes | Yes | Yes |
| SMARTY (Three) | Yes | Yes | Yes |
| iD Mobile (Three) | Yes | Yes | Yes |
| Vectone Mobile (EE) | Yes | Yes | Yes |
Pricing, Shipping & Returns
| Item | Detail |
|---|---|
| Current Price | £139.99 GBP (was £169.99 — save 18%) |
| UK Shipping | Free standard delivery, 10–15 business days |
| EU / Europe Shipping | Available to DE, FR, IT, ES, NL, BE, AT, SE, DK, FI, IE, PT, PL, CZ — 1–2 business days dispatch |
| Return Policy | 365-day money-back guarantee |
| Support | Lifetime technical support via email and chat |
| Payment | Credit / debit card, PayPal, Apple Pay, Google Pay |
Pros & Cons
An objective assessment based on the CVC's hardware, price point and vehicle use case.
Pros
- Purpose-built for vehicles: Magnetic roof antenna, 12 V car power adapter and compact booster unit designed for in-car use.
- All four UK networks: Band 20 800 MHz covers EE, O2, Vodafone and Three plus all MVNOs — one device for every network.
- 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 CVC 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
- Single-band only (Band 20): Does not boost 5G, 3G or higher 4G bands (Band 3 / 7 / 38). In areas with no 800 MHz 4G, 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.
- 12 V only (included): For 240 V mains use in a static caravan, an optional AC adapter is needed.
How the CVC Works
The CVC is a bidirectional RF repeater designed for mobile environments. Three-step signal path:
- Capture: The magnetic-mount outdoor antenna on the vehicle roof picks up the weak 800 MHz 4G LTE signal from the nearest mast.
- Amplify: The booster unit filters and amplifies both downlink (tower-to-phone) and uplink (phone-to-tower) signals by up to 65 dB.
- 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)
- Find the strongest signal spot on the vehicle roof (usually the centre or front) using your phone's signal bars.
- Place the magnetic-mount outdoor antenna on the roof at that spot. The magnet holds it securely at motorway speeds.
- Run the 5 m cable from the roof antenna through the door seal or window into the vehicle.
- Place the booster unit under a seat or in the glove compartment. Screw on the indoor whip antenna.
- Plug the 12 V adapter into the cigarette-lighter socket. The LED indicators will show power and signal status.
- 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 CVC work with 5G?
No. The CVC is a 4G LTE Band 20 (800 MHz) booster only. It does not amplify 5G frequencies. However, 4G LTE 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. All four major UK networks use Band 20 (800 MHz) for 4G LTE coverage, especially on rural roads. The CVC is compatible with EE, O2, Vodafone, Three and every MVNO running on those networks (giffgaff, Tesco Mobile, Lebara, Lycamobile, Plusnet, ASDA Mobile, SMARTY, iD Mobile, BT Mobile, Vectone Mobile).
3. Can I use the CVC in a caravan or motorhome?
Yes. The CVC is designed for cars, vans, motorhomes and static caravans. The magnetic antenna mounts on the roof of a motorhome or caravan, and the 12 V 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 CVC 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 4G LTE (Band 20) signal at the roof antenna. The CVC 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 CVC supports unlimited 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 CVC different from a home booster like the C100?
The CVC uses a 12 V 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 Band 20 4G LTE frequency with up to 65 dB gain. The CVC is for cars, vans and caravans; the C100 is for homes and offices.
9. What is the return policy and warranty?
The CVC 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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Why You'll Love It
Powerful Signal Boost
Easy Installation
Networks Supported
Fast Speeds
Crystal Clear Calls
Wide Coverage Area
Award-Winning Signal Booster
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