4G LTE - 500m2 (EE/O2/Vodafone/Three) Mobile Signal Booster
✓ Compatible with multiple users and devices
✓ Complete kit: all parts included
✓ Simpler Install and Maintenance
Enhance indoor signal coverage effortlessly with the 4G LTE mobile signal booster compatible with EE, O2, and Vodafone UK networks. Operating at 800MHz frequency, it ensures reliable data connection along with VoLTE support.
Frequently Bought Together
4G LTE Mobile Signal Booster 500m² UK — Boost4U C500 (Flagship High-Power / All Networks)
The Boost4U C500 is the flagship high-power 4G LTE (Band 20 / 800 MHz) mobile signal booster designed for very large homes and commercial premises up to 500 m², delivering 75 dB of gain with 10 dBi outdoor and 8 dBi indoor antennas to amplify 4G data and VoLTE calls for all four major UK networks — EE, O2, Vodafone and Three — plus their MVNOs, priced at £335.00 with free UK shipping and a 365-day money-back guarantee.
As the most powerful home booster in the Boost4U range, the C500 is engineered for properties where standard boosters fall short — 6+ bedroom houses, converted barns, large offices, pubs, restaurants and retail spaces up to 500 m². Its 75 dB gain (the highest in the Boost4U lineup) and 10 dBi outdoor antenna capture even very weak outdoor signals (-110 dBm) and distribute clean, amplified 4G throughout the entire property. The complete kit includes the flagship booster unit, a high-gain outdoor omni antenna, an indoor panel antenna, 15 m low-loss cable, UK power adapter and mounting hardware, installing in under 35 minutes without an engineer.
Enhanced 4G LTE Coverage
Experience uninterrupted connectivity with the 4G LTE - 500m2 Mobile Signal Booster. Designed to amplify signals for EE, O2, Vodafone, and Three networks, it ensures a reliable connection throughout your home or office, covering up to 500 square meters.
Multi-User Support
This powerful booster supports up to 50 simultaneous users, making it perfect for families or small businesses. Everyone can enjoy faster downloads, smoother streaming, and clearer calls without any interruptions.
Complete Installation Kit
The booster comes with everything you need for a hassle-free setup, including an outdoor antenna, indoor antenna, and all necessary cables. Get started quickly and easily without the need for professional installation.
High Performance
With a gain of up to 65 dB, this booster significantly enhances your mobile signal strength. Say goodbye to dropped calls and slow internet speeds, and enjoy a seamless online experience.
Versatile Compatibility
Compatible with a wide range of mobile networks, this booster is ideal for various providers in the UK. Whether you're using EE, O2, Vodafone, or Three, you can trust this device to improve your signal quality.
User-Friendly Design
The sleek and compact design of the 4G LTE Mobile Signal Booster allows it to blend seamlessly into any environment. Its intuitive setup process ensures that you can boost your signal without any technical expertise.
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 O2 Vodafone UK Mobile Networks Indoor Signal Coverage 800MHz Frequency VoLTE Support Reliable Data 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. It is a high-performance booster, boost indoor signal cover an area of up to 500 m2, perfect for medium houses, offices, warehouse and more.
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
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] (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 | 50 Simultaneously |
| Band | Single Band 20 |
| Frequency | 800MHz |
| Gain(dB) | Uplink Gp≥60; Downlink Gp≥65 |
| Up-link | 832~862 MHz |
| Down-link | 791~821 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 | C500 / MBC500gb |
| Product Type | Flagship High-Power 4G LTE Band 20 (800 MHz) Mobile Signal Booster |
| Frequency Band | Band 20 — 800 MHz (FDD LTE) |
| Uplink Frequency | 832 – 862 MHz |
| Downlink Frequency | 791 – 821 MHz |
| Supported Standards | 4G LTE (data + VoLTE calls) |
| Max Gain | Up to 75 dB (highest in Boost4U home range) |
| Max Output Power | 20 dBm (EIRP) |
| Indoor Coverage | Up to 500 m² (5,382 sq ft) |
| Noise Figure | ≤ 3 dB |
| Impedance | 50 Ω |
| Power Supply | AC 100–240 V, 50/60 Hz (UK plug included) |
| Power Consumption | ≤ 18 W |
| Operating Temperature | -10°C to +55°C |
| Dimensions (Booster Unit) | 220 × 140 × 32 mm |
| Weight | Approx. 750 g |
| Installation | DIY, plug-and-play, ~35 minutes |
| Ofcom Status | Licence-exempt (mobile repeater) |
What's in the Box
| Item | Quantity | Description |
|---|---|---|
| Booster Unit (C500) | 1 | Flagship high-power Band 20 800 MHz 4G amplifier with LED status indicators |
| Outdoor Omni Antenna | 1 | Wall/pole-mount, 10 dBi gain, N-type connector, IP65 weather-sealed |
| Indoor Panel Antenna | 1 | Wall/ceiling mount, 8 dBi gain, N-type connector |
| Coaxial Cable | 1 | 15 m low-loss 5D-FB, N-type both ends (longer cable for large properties) |
| Power Adapter | 1 | UK 3-pin plug, AC 100–240 V |
| Mounting Hardware | 1 set | Screws, wall plugs, cable ties |
| User Manual | 1 | English installation guide |
UK Network Compatibility
| Network | Type | Band 20 4G Data | VoLTE Calls |
|---|---|---|---|
| EE | MNO | Yes | Yes |
| O2 | MNO | Yes | Yes |
| Vodafone | MNO | Yes | Yes |
| Three | MNO | Yes | Yes |
| BT Mobile | MVNO (EE) | Yes | Yes |
| Plusnet Mobile | MVNO (EE) | Yes | Yes |
| giffgaff | MVNO (O2) | Yes | Yes |
| Sky Mobile | MVNO (O2) | Yes | Yes |
| Tesco Mobile | MVNO (O2) | Yes | Yes |
| Lebara | MVNO (Vodafone) | Yes | Yes |
| VOXI | MVNO (Vodafone) | Yes | Yes |
| iD Mobile | MVNO (Three) | Yes | Yes |
| SMARTY | MVNO (Three) | Yes | Yes |
Note: The C500 amplifies 4G LTE data and VoLTE calls on Band 20. It does not boost 2G/3G voice on 900 MHz. For 2G/3G call-only boosting, see the Boost4U G150.
Pricing & Shipping
| Item | Detail |
|---|---|
| Current Price | £335.00 GBP |
| 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 |
| Handling Time | 1–2 business days |
| Return Policy | 365-day money-back guarantee |
| Warranty | Lifetime support |
Pros & Cons
| Pros | Cons |
|---|---|
| ✅ Highest gain in Boost4U range (75 dB) — handles very weak signals | ❌ 4G LTE only — does not boost 2G/3G voice (requires VoLTE) |
| ✅ 500 m² coverage — largest in Boost4U home range | ❌ £335.00 — premium/flagship price point |
| ✅ 10 dBi outdoor antenna — captures weakest signals | ❌ Requires 1–2 bars of outdoor 4G signal minimum |
| ✅ Works with ALL four UK networks + MVNOs simultaneously | ❌ Outdoor antenna is larger (10 dBi) and may need planning consideration |
| ✅ Low 3 dB noise figure — cleanest amplified signal | ❌ 15 m cable may need upgrade for very large properties |
| ✅ 15 m low-loss cable included (longer than standard 10 m) | ❌ Higher power consumption (18 W) than smaller models |
| ✅ 365-day money-back guarantee and lifetime support | ❌ Larger/heavier booster unit (750 g vs 550–650 g) |
| ✅ Licence-exempt under Ofcom regulations | ❌ Overkill for small flats under 150 m² |
How It Works
The C500 operates on a three-stage relay principle optimised for 4G LTE Band 20. The high-gain 10 dBi outdoor antenna captures the weak 800 MHz signal from the nearest mast — even at -110 dBm — and passes it via the 15 m low-loss coaxial cable to the flagship booster unit. The booster amplifies the signal by up to 75 dB with an ultra-low 3 dB noise figure and rebroadcasts it indoors through the 8 dBi panel antenna, delivering fast 4G data and clear VoLTE calls throughout 500 m².
The system is bidirectional: it also amplifies the signal your phone sends back to the mast, ensuring both upload and download speeds improve. Advanced automatic gain control (AGC) prevents oscillation and adjusts output in real-time based on incoming signal strength, maintaining stable performance even as network conditions change. The C500's higher gain and better antennas make it the only Boost4U model that can reliably deliver full coverage in properties over 300 m² or in rural areas with very weak outdoor signal.
Installation Steps
- Find the strongest outdoor 4G signal using your phone's signal meter or the Network Cell Info app.
- Mount the outdoor antenna on an exterior wall, pole or roof, pointing toward the nearest mast. The 10 dBi antenna should be mounted as high as possible for best results.
- Run the 15 m coaxial cable from the outdoor antenna to the booster unit indoors.
- Connect the indoor panel antenna to the booster and mount it centrally in the coverage area.
- Plug in the power adapter and wait 30 seconds for the booster to calibrate.
- Test 4G speeds using speedtest.net — expect 20–60+ Mbps where previously 0–5 Mbps.
Frequently Asked Questions
1. Will the C500 work with my network?
The C500 works with all four major UK networks — EE, O2, Vodafone and Three — on their Band 20 (800 MHz) 4G LTE frequency, plus all their MVNOs including BT Mobile, Plusnet, giffgaff, Sky Mobile, Tesco Mobile, Lebara, VOXI, iD Mobile and SMARTY. It is the most network-compatible high-power booster in the Boost4U range.
2. Does the C500 boost 4G internet speed?
Yes. The C500 is specifically designed to amplify 4G LTE data on Band 20 (800 MHz). In real-world testing, users report download speeds increasing from 0.5–5 Mbps to 25–60+ Mbps, depending on outdoor signal strength and network congestion. It also supports VoLTE for high-quality voice calls over 4G.
3. How big an area does the C500 cover?
The C500 covers up to 500 m² (approximately 5,382 sq ft) under ideal conditions with a strong outdoor signal. Actual coverage depends on building materials — thick stone walls, metal roofs or basements may reduce effective coverage. For properties over 500 m², multiple C500 units or a professional DAS system may be required.
4. Is the C500 legal in the UK?
Yes. The C500 is a licence-exempt mobile repeater under Ofcom regulations, provided it is installed correctly and does not cause interference to the mobile network. Ofcom legalised the use of certain mobile repeaters in 2018, and the C500 meets all technical requirements for exemption including automatic gain control and power limits.
5. Do I need an engineer to install it?
No. The C500 is designed for DIY installation. The complete kit includes all hardware, and most customers install it in 30–35 minutes using only a drill and screwdriver. A step-by-step English manual is included, and lifetime phone support is available if needed.
6. What if I have no outdoor 4G signal?
A booster cannot create signal where none exists. The C500 requires at least 1–2 bars of usable Band 20 4G signal outdoors to amplify. If you have zero bars outside, contact your network provider about a mast or femtocell solution before purchasing.
7. Will it improve my VoLTE calls?
Yes. By amplifying the 4G LTE signal, the C500 improves VoLTE (Voice over LTE) call quality and reliability. If your phone and network support VoLTE (most modern phones and all UK networks do), calls will be clearer and more stable. Without VoLTE, calls may fall back to 2G/3G which the C500 does not amplify.
8. How much does it cost to run?
The C500 consumes ≤18 W, which costs approximately £20–25 per year in electricity at current UK rates. It is designed to run continuously 24/7 and has no ongoing subscription fees or network charges.
9. Can I use it in a listed building or commercial premises?
The indoor unit is compact (220 × 140 mm) and can be placed on a shelf or mounted with adhesive strips, requiring no structural changes. The outdoor antenna may require landlord permission or listed building consent if it involves exterior drilling. For commercial premises, check your lease agreement and local planning regulations.
10. What is the return policy if it doesn't work?
Boost4U offers a 365-day money-back guarantee. If the C500 does not improve your 4G signal, you can return it within 365 days for a full refund, minus shipping costs. The company also provides lifetime technical support to help optimise installation and antenna placement.
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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
Secure & Safe
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