4G LTE & Calls - 500m2 (EE/ASDA/BT) Mobile Signal Booster
✓ Compatible with multiple users and devices
✓ Complete kit: all parts included
✓ Simpler Install and Maintenance
The 4G LTE mobile signal booster amplifies voice calls signal coverage for UK mobile networks of EE, BT, and Asda.
Frequently Bought Together
4G LTE Mobile Signal Booster UK — Boost4U CD500 (EE / O2 / Vodafone / Three)
The Boost4U CD500 is a plug-and-play 4G LTE (Dual Band 20 & 3 / 800 & 1800 MHz) mobile signal booster that lifts indoor signal from 0–1 bars to a full 5 bars across up to 500 m², works with every major UK network including EE, O2, Vodafone and Three, and is priced at £485.00 with free UK shipping and a 365-day money-back guarantee.
Designed for homes, home offices, cottages and small commercial spaces in rural and weak-signal areas of the UK, the CD500 amplifies the 800 & 1800 MHz Dual Band 20 & 3 4G LTE frequency used by all four national MNOs and their MVNOs. The complete kit includes the booster unit, an indoor whip antenna, an outdoor omni antenna, 10 m outdoor + 5 m indoor cables, power adapter and mounting hardware — no engineer required.
Enhanced Coverage
Experience seamless connectivity with the 4G LTE & Calls Mobile Signal Booster, designed to cover up to 500m². Perfect for medium-sized homes, offices, and warehouses, it ensures that every corner of your space receives a strong signal, eliminating dead zones.
Universal Compatibility
This booster is compatible with major UK networks including EE, ASDA, and BT, making it an essential tool for households with multiple users on different carriers. Enjoy improved 4G LTE and call quality regardless of your network provider.
Easy Installation
Setting up the mobile signal booster is a breeze. The complete kit includes all necessary components, allowing for a straightforward installation process. No technical expertise is required, so you can enjoy better signal strength in no time.
Reliable Performance
Say goodbye to dropped calls and slow data speeds. The dual-band booster amplifies signals on both 800MHz and 1800MHz frequencies, ensuring a consistent and reliable connection for voice calls and data usage.
Supports Multiple Users
Designed to accommodate up to 50 simultaneous users, this booster is ideal for families or small offices. Everyone can enjoy enhanced signal strength for calls, texts, and internet browsing without interruptions.
Durable and Efficient
Built with high-quality materials, the 4G LTE & Calls Mobile Signal Booster is designed for longevity and efficiency. It operates quietly and consumes minimal power, making it an eco-friendly choice for boosting your mobile signal.
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 EE BT Asda Voice Calls Signal Coverage UK Mobile Networks
It boost All 4G/LTE and Calls signal on 800MHz, 1800MHz frequency, the frequencies used in UK and Europe used by mobile networks to deliver their mobile services: 4G and 2G (also known as GSM). It can boost UK and Europe all network operators 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. It also can boost UK all networks on EE, BT, Asda, Virgin, The People's Operator, Orange, T-Mobile for improving Calls & Texts signal. The booster is a high-performance booster, boost indoor signal cover an area of up to 500 m2, perfect for medium houses, offices, warehouse and more.
The system is designed for universal 4G coverage. Unlike other kits this device will boost ALL mobile providers' 4G LTE, the solution will provide coverage on on both 800MHz, 1800MHz frequency simultaneously. It's Dual Band booster and is an ESSENTIAL if many people in the same household are on different mobile phone networks!
Eliminates Dropped Calls
Clear Voice
No Miss Important Calls
Reliable 4G/LTE Data
Send/Receive SMS
SMS Text Messages Quickly
Faster Uploads & Downloads
Signal Wider Coverage
Reception Up to 500 sq.m.
Upgrade External Cables
If our standard package 10 meter external cable length is not enough to cover your area you have an upgrade option.
Upgrade Protector
Lightning Surge Protector - Designed to Protect your equipment from high amperage surges due to lightning strikes on aerials or masts in close proximity to the device. This unit is rated for 18KA of current surge and is very simple to install on any device.
About External Aerial
Higher Gain Yagi Antenna - For better performance it's a must if indoor your phone with 1/2 signal bars. Full kits already include it, no matter outdoor your phone best signal strength in the following range:2G (GSM) -76 to -90 dBm
3G (UMTS) -80 to -94 dBm
4G (LTE) -97 to -105 dBm
How to shown dBm reading on phone? Check Quick Start Guide
Specification
| Application & Bands | [4G/LTE & Voice Calls] (Band 20, 3) |
| Country | United Kingdom |
| Boost All On | EE (2G & 4G) O2 (4G) Vodafone (4G) Three (4G) Asda (2G & 4G) BT (2G & 4G) Freedom Pop (4G) Giffgaff (4G) iD Mobile (4G) Lycamobile (4G) Orange (2G & 4G) Plusnet Mobile (4G) Sky Mobile (4G) Smarty Mobile (4G) Tesco (4G) The People's Operator (2G & 4G) T-Mobile (2G & 4G) Virgin (2G & 4G) |
| Users Supporting | 50 Simultaneously |
| Band | Dual Band 20 & 3 |
| Frequency | 800MHz & 1800MHz |
| Gain(dB) | Uplink Gp≥60; Downlink Gp≥65 |
| Up-link | 832~862 MHz; 1710~1785 MHz |
| Down-link | 791~821 MHz; 1805~1880 MHz |
| Export Power(Po) | ≥20dBm |
| Power Adapter | Input: AC 100V~240V 50/60Hz; Output: DC 5V |
| What’s Included | 1 x Booster 1 x Outdoor Antenna 1 x Indoor Antenna 1 x UK Type Power Adapter 1 x 10 Meters Outdoor Cable 1 x 5 Meters Indoor Cable |
Custom your solution
Expandable coverage by adding indoor antenna if the outside signal is strong.
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.
Get stronger signal
Normal Cell Coverage
Dropped calls and slow data are generally caused by three things: distance from a cell tower, building materials in your home or office, or obstruction from tall objects such as trees, topography, and buildings.
Signal Coverage with our booster
Signal boosters increase cell signal by collecting signals with a powerful antenna, delivering those signals to the booster, amplifying the cell signals so your devices receive them, and delivering your device's boosted signals back to the cell tower.Installation
- Connect the indoor antenna to the MS port.
- Connect the outdoor antenna to the BS Port.
- Install the outdoor antenna and keep a minimum vertical distance of 10 meters from the indoor antenna.
- Point the outdoor antenna to the direction where you know there is possibly a higher signal strength from the base station.
- Power on the booster and check the signal strength.
- Adjust the outdoor antenna until you get the best signal strength.
IMPORTANT NOTE:
DO NOT POWER ON THE DEVICE UNTIL YOU HAVE COMPLETED THIS SETUP.
Read more about User Manual Documentation.
Application Scenarios
Home
Office
Garage
Metal Buildings
Specifications
| Parameter | Value |
|---|---|
| Model | CD500 / MBCD500gb |
| Product Type | 4G LTE Mobile Signal Booster / Repeater |
| Frequency Band | Dual Dual Band 20 & 3 & 3 — 800 & 1800 MHz & 1800 & 1800 MHz (FDD LTE) |
| Uplink Frequency | 832 – 862 MHz (Band 20); 1710 – 1785 MHz (Band 3) |
| Downlink Frequency | 791 – 821 MHz (Band 20); 1805 – 1880 MHz (Band 3) |
| Max Gain | Uplink ≥45 dB; Downlink ≥50 dB |
| Output Power | ≥20 dBm (per 3GPP / Ofcom licence-exempt limit) |
| Indoor Coverage | Up to 500 m² (1,076 ft²) — single room / small flat |
| 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, 2G voice calls, SMS |
| Simultaneous Users | 50 simultaneously |
| Power Supply | AC 100–240 V, 50/60 Hz; DC 5 V adapter included |
| Dimensions (Booster Unit) | 170 × 110 × 30 mm |
| Weight | Approx. 450 g (booster only) |
| Installation | Plug-and-play; no tools required for basic setup |
| Cable Included | 10 m outdoor + 5 m indoor low-loss coaxial cables (upgrade to 15 m available) |
| Indoor Antenna | Whip antenna, 3 dBi |
| Outdoor Antenna | Omni-directional, 5 dBi (upgrade to high-gain directional available) |
| Noise Figure | ≤ 5 dB |
| Operating Temperature | -10 °C to +55 °C |
| Certification | UKCA / CE / RoHS; Ofcom licence-exempt (mobile repeater class) |
| Warranty | Lifetime technical support; 365-day money-back guarantee |
What Is in the Box
| Item | Quantity |
|---|---|
| 4G LTE Booster Unit (CD500) | 1 |
| Indoor Whip Antenna (3 dBi) | 1 |
| Outdoor Omni Antenna (5 dBi) | 1 |
| 5 m Low-Loss Coaxial Cable | 1 |
| UK Power Adapter (5 V) | 1 |
| Mounting Bracket & Screws | 1 set |
| Quick Start Guide (English) | 1 |
Compatible UK Mobile Networks
The CD500 boosts Dual Band 20 & 3 (800 & 1800 MHz) 4G LTE, which is deployed by every major UK operator. The table below confirms network-by-network compatibility.
| Network | Dual Band 20 & 3 (800 & 1800 MHz) 4G | VoLTE Supported | CD500 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 | £485.00 GBP (was £485.00 — ) |
| 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 CD500's hardware, price point and intended use case.
Pros
- Lowest price in class: At £485.00 the CD500 undercuts comparable dual-band UK boosters (typically £150–£300) by 30–60%.
- All four UK networks: Dual Band 20 & 3 800 & 1800 MHz is used by EE, O2, Vodafone and Three, so one device covers every network and MVNO.
- Plug-and-play install: Most users complete setup in 10–15 minutes without tools or an engineer.
- Up to 5 bars guaranteed: In areas with at least 1 bar of outdoor signal, the CD500 delivers a full 5-bar indoor signal.
- Multiple simultaneous users: No per-device limit — households and small offices 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; standard delivery 10–15 business days.
- Ofcom licence-exempt: Operates within the UK's mobile repeater licence-exemption parameters.
Cons
- Single-band only (Dual Band 20 & 3): Does not boost 5G, 3G (2100 MHz) or higher 4G bands (Band 3 / 7 / 38). If your area has no 800 & 1800 MHz 4G, coverage will be limited.
- 500 m² max coverage: Suitable for one room or a small flat; larger homes need the 300 m² or 500 m² models or an extended antenna kit.
- Requires at least 1 bar outdoors: A booster cannot create signal where none exists — the outdoor antenna must receive a usable signal from the nearest mast.
- Standard cable is 5 m: Homes needing the antenna on the roof may require the 110 m outdoor + 5 m indoor cables upgrade (£30.99).
- No built-in LCD / signal meter: Unlike premium units, the CD500 uses LED indicators only — fine for most users but less precise for optimisation.
- Standard delivery 10–15 days: Not next-day; express delivery is available at extra cost.
How the CD500 Works
The CD500 is a bidirectional RF repeater. It follows a three-step signal path:
- Capture: The outdoor omni antenna picks up the weak 800 & 1800 MHz 4G LTE signal from the nearest mobile mast.
- Amplify: The booster unit filters and amplifies both downlink (tower-to-phone) and uplink (phone-to-tower) signals by uplink ≥45 dB; downlink ≥50 dB.
- Redistribute: The indoor whip antenna rebroadcasts the amplified signal throughout the 500 m² coverage zone, and relays phone signals back to the mast.
Installation Steps (10–15 Minutes)
- Find the strongest outdoor signal spot (usually near a window or on the roof) using your phone's signal bars.
- Mount the outdoor omni antenna at that spot, pointing toward the nearest mast.
- Run the 5 m coaxial cable from the outdoor antenna to the booster unit inside.
- Screw the indoor whip antenna onto the booster unit.
- Plug in the 12 V power adapter. The LED indicators will show power and signal status.
- Wait 30–60 seconds for the booster to sync with the network, then test signal bars on your phone indoors.
Frequently Asked Questions (10 Real UK User Questions)
1. Does the CD500 work with 5G?
No. The CD500 is a 4G LTE Dual Band 20 & 3 (800 & 1800 MHz) booster only. It does not amplify 5G frequencies (700 MHz n28, 3.5 GHz n78, etc.). However, 4G LTE remains the primary voice and data layer for most UK users, and VoLTE calls work perfectly. For 5G boosting, consider a multi-band 5G booster.
2. Will this booster work with my specific network — EE, O2, Vodafone or Three?
Yes. All four major UK networks use Dual Band 20 & 3 (800 & 1800 MHz) for 4G LTE coverage, especially in rural areas. The CD500 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. How many square metres does the CD500 cover?
The CD500 covers up to 500 m² (approximately 1,076 ft²), which is typically one large room, a small flat or a home office. Actual coverage depends on outdoor signal strength — a stronger outdoor signal yields a larger indoor coverage area. For homes larger than 500 m², consider the 300 m² or 500 m² models or add the extended antenna kit.
4. Is a mobile signal booster legal in the UK?
Yes, provided the device meets Ofcom's licence-exempt mobile repeater specifications. The CD500 is UKCA / CE certified and operates within Ofcom's Technical Standard for Mobile Repeaters (2024), which permit licence-exempt use of repeaters that meet strict power and filtering limits. Uncertified, high-power or "universal" boosters remain illegal and can interfere with the network.
5. Do I need an outdoor signal for the booster to work?
Yes. A signal booster amplifies an existing signal — it cannot create one where none exists. You need at least 1 bar of usable 4G LTE (Dual Band 20 & 3) signal at the outdoor antenna location. If you have zero bars outdoors even with the antenna mounted high, a booster will not help and you should contact your network operator about a femtocell or network upgrade.
6. How long does installation take and do I need an engineer?
Most customers install the CD500 in 10–15 minutes without any tools or professional help. The kit includes everything needed: booster, indoor antenna, outdoor antenna, 10 m outdoor + 5 m indoor cables, power adapter and mounting bracket. Only basic DIY is required. If you need the antenna on a high roof or have a listed building, a professional installer may be advisable.
7. Can multiple people use the boosted signal at the same time?
Yes. The CD500 supports 50 simultaneous users and devices. There is no per-device cap — the whole household or office can make calls, stream video and browse simultaneously. Performance depends on the available mast bandwidth, not the booster itself.
8. What is the difference between the CD500 and more expensive boosters?
The CD500 is a dual-band (Dual Band 20 & 3 only) booster optimised for the UK's most widely deployed 4G frequency. More expensive units (£250–£600) typically offer multi-band support (3G + 4G + 5G), larger coverage (300–500 m²), built-in signal meters and app-based monitoring. For users who only need 4G LTE in a space up to 500 m², the CD500 delivers equivalent core performance at a fraction of the cost.
9. What is the return policy and warranty?
The CD500 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.
Related Guides & Reviews
- Boost4U CD500 Product Page — £485.00
- Best Mobile Signal Booster UK 2025: Top 5 Compared (CD500 Ranked #1 Budget)
- Boost4U CD500 Review: Best Budget 4G Signal Booster Under £150?
- How to Boost Mobile Signal at Home UK: 7 Proven Methods (2025)
- Are Mobile Signal Boosters Legal in the UK? Ofcom Guide 2025
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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
2026 Winner
Smart Features, Made Simple
Easy Setup
Smart Technology
Energy Efficient
Reliable Performance
24/7 Support
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