3G & 4G LTE - 100m2 (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 our range of boosters including 3G, 4G LTE, EE, O2, Vodafone, and Three Mobile signal boosters. Experience improved indoor coverage and amplify your mobile signal effortlessly.
Frequently Bought Together
4G LTE Mobile Signal Booster UK — Boost4U CW100 (EE / O2 / Vodafone / Three)
The Boost4U CW100 is a plug-and-play 4G LTE (Dual Band 20 & 1 / 800 & 2100 MHz) mobile signal booster that lifts indoor signal from 0–1 bars to a full 5 bars across up to 100 m², works with every major UK network including EE, O2, Vodafone and Three, and is priced at £185.99 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 CW100 amplifies the 800 & 2100 MHz Dual Band 20 & 1 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 cable, power adapter and mounting hardware — no engineer required.
Enhanced Signal Strength
Experience a significant boost in your mobile signal with the 3G & 4G LTE Mobile Signal Booster. Designed to enhance coverage for EE, O2, Vodafone, and Three networks, this device ensures you stay connected even in areas with weak signals. Say goodbye to dropped calls and hello to uninterrupted communication.
Wide Coverage Area
Covering up to 100 square meters, this booster is perfect for small apartments or offices. Whether you're working from home or enjoying leisure time, you can enjoy reliable connectivity throughout your space. No more dead zones—stay connected wherever you are.
User-Friendly Installation
Setting up the 3G & 4G LTE Mobile Signal Booster is a breeze. The complete kit includes all necessary components, allowing for a straightforward installation process. With clear instructions, you can have your booster up and running in no time, enhancing your mobile experience effortlessly.
Supports Multiple Devices
This signal booster can support up to 10 devices simultaneously, making it ideal for families or small teams. Everyone can enjoy improved signal strength for calls, texts, and data without any interruptions. Stay connected with friends, family, or colleagues without compromise.
Dual Band Compatibility
The booster operates on both 800MHz and 2100MHz frequencies, ensuring compatibility with a wide range of mobile devices. This dual-band functionality means you can enjoy enhanced 3G and 4G LTE signals, regardless of your network provider, making it a versatile solution for all users.
Reliable Performance
With a gain of up to 50 dB, this mobile signal booster guarantees a stable and reliable connection. Whether you're streaming videos, making calls, or browsing the web, you can trust that your signal will remain strong and consistent, providing you with a seamless mobile experience.
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 4G LTE Booster EE Signal Booster O2 Mobile Booster Vodafone Signal Booster Three Mobile Signal Booster Indoor Coverage Booster Mobile Signal Amplifier
It boost 3G and 4G LTE signal on 800MHz, 2100MHz frequency, the frequencies used in UK by mobile networks to deliver their mobile services: 3G, 3.5G (also known as HSDPA provides faster data rates than 3G) and 4G. It can boost UK Three, EE, O2, Vodafone etc ALL mobile network operators for improving 3G and 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. If you have a 4G ready phone, but you’re not in a 4G area, you’ll still be able to use 3G. Boost indoor signal cover an area up to 100 m2, is ideal for small apartments or offices.
This system is compatible with all 4G and 3G mobile phone networks, will provide coverage on both 800MHz, 2100MHz 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 3G/4G LTE Data
Send/Receive SMS
SMS Text Messages Quickly
Faster Uploads & Downloads
Signal Wider Coverage
Reception Up to 100 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 External Aerial
Higher Gain Yagi Antenna - For better performance it's a must if indoor your phone with 1/2 signal bars. Or get this upgrade if outdoor 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
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.
Specification
| Application & Bands | [3G & 4G/LTE Data] (Band 20, 1) |
| Country | United Kingdom |
| Boost All On | EE (3G & 4G) O2 (3G & 4G Vodafone (3G & 4G) Three (3G & 4G) Asda (3G & 4G) BT (3G & 4G) Freedom Pop (3G & 4G) Giffgaff (3G & 4G) iD Mobile (3G & 4G) Lycamobile (3G & 4G) Lebara (3G) TalkTalk (3G) Talkmobile (3G & 4G) Orange (3G & 4G) Plusnet Mobile (3G & 4G) Sky Mobile (3G & 4G) Smarty Mobile (3G & 4G) Tesco (3G & 4G) The People's Operator (3G & 4G) T-Mobile (3G & 4G) Virgin (3G & 4G) |
| Users Supporting | 10 Simultaneously |
| Band | Dual Band 20 & 1 |
| Frequency | 800MHz & 2100MHz |
| Gain(dB) | Uplink Gp≥45; Downlink Gp≥50 |
| Up-link | 832~862 MHz; 1930~1990 MHz |
| Down-link | 791~821 MHz; 2110~2180 MHz |
| Export Power(Po) | ≥10dBm |
| 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 |
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 | CW100 / MBCW100gb |
| Product Type | 4G LTE Mobile Signal Booster / Repeater |
| Frequency Band | Dual Dual Band 20 & 1 & 3 — 800 & 2100 MHz & 1800 & 2100 MHz (FDD LTE) |
| Uplink Frequency | 832 – 862 MHz (Band 20); 1930 – 1990 MHz (Band 3) |
| Downlink Frequency | 791 – 821 MHz (Band 20); 2110 – 2180 MHz (Band 3) |
| Max Gain | Uplink ≥45 dB; Downlink ≥50 dB |
| Output Power | ≥10 dBm (per 3GPP / Ofcom licence-exempt limit) |
| Indoor Coverage | Up to 100 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, 3G data calls, SMS |
| Simultaneous Users | 10 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 low-loss coaxial cable (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 (CW100) | 1 |
| Indoor Whip Antenna (3 dBi) | 1 |
| Outdoor Omni Antenna (5 dBi) | 1 |
| UK Power Adapter (5 V) | 1 |
| Mounting Bracket & Screws | 1 set |
| Quick Start Guide (English) | 1 |
Compatible UK Mobile Networks
The CW100 boosts Dual Band 20 & 1 (800 & 2100 MHz) 4G LTE, which is deployed by every major UK operator. The table below confirms network-by-network compatibility.
| Network | Dual Band 20 & 1 (800 & 2100 MHz) 4G | VoLTE Supported | CW100 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 | £185.99 GBP (was £185.99 — ) |
| 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 CW100's hardware, price point and intended use case.
Pros
- Lowest price in class: At £185.99 the CW100 undercuts comparable dual-band UK boosters (typically £150–£300) by 30–60%.
- All four UK networks: Dual Band 20 & 1 800 & 2100 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 CW100 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 & 1): Does not boost 5G, 3G (2100 MHz) or higher 4G bands (Band 3 / 7 / 38). If your area has no 800 & 2100 MHz 4G, coverage will be limited.
- 100 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 10 m: Homes needing the antenna on the roof may require the 110 m cable upgrade (£185.99).
- No built-in LCD / signal meter: Unlike premium units, the CW100 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 CW100 Works
The CW100 is a bidirectional RF repeater. It follows a three-step signal path:
- Capture: The outdoor omni antenna picks up the weak 800 & 2100 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 100 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 10 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 CW100 work with 5G?
No. The CW100 is a 4G LTE Dual Band 20 & 1 (800 & 2100 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 & 1 (800 & 2100 MHz) for 4G LTE coverage, especially in rural areas. The CW100 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 CW100 cover?
The CW100 covers up to 100 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 100 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 CW100 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 & 1) 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 CW100 in 10–15 minutes without any tools or professional help. The kit includes everything needed: booster, indoor antenna, outdoor antenna, 10 m cable, 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 CW100 supports 10 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 CW100 and more expensive boosters?
The CW100 is a dual-band (Dual Band 20 & 1 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 100 m², the CW100 delivers equivalent core performance at a fraction of the cost.
9. What is the return policy and warranty?
The CW100 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 CW100 Product Page — £185.99
- Best Mobile Signal Booster UK 2025: Top 5 Compared (CW100 Ranked #1 Budget)
- Boost4U CW100 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
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