Calls - 150m2 (O2/Vodafone/giffgaff/Sky Mobile) Mobile Signal Booster
✓ Compatible with multiple users and devices
✓ Complete kit: all parts included
✓ Simpler Install and Maintenance
Enhance your mobile signal with our selection of signal boosters tailored for O2, Vodafone, Giffgaff, and Sky Mobile networks. Enjoy improved indoor signal coverage up to 150m² using our UK mobile signal booster.
Frequently Bought Together
O2 Vodafone Mobile Signal Booster 150m² UK — Boost4U G150 (Calls / Voice)
The Boost4U G150 is a plug-and-play Band 8 (900 MHz) mobile signal booster designed for homes and small offices up to 150 m², amplifying 2G GSM and 3G UMTS voice calls and SMS for O2, Vodafone, giffgaff, Sky Mobile and their MVNOs, priced at £85.00 with free UK shipping and a 365-day money-back guarantee.
Engineered for the UK's 900 MHz voice spectrum, the G150 targets the exact frequency band used by O2 and Vodafone for 2G and 3G calls — the fallback layer that keeps phones connected when 4G calling (VoLTE) drops out. The complete kit includes the booster unit, an omni-directional outdoor antenna, an indoor ceiling/wall antenna, 10 m cable, power adapter and mounting hardware, installing in under 20 minutes without an engineer.
Enhanced Signal Coverage
Experience superior mobile connectivity with the Calls - 150m2 Mobile Signal Booster. Designed to cover up to 150 square meters, it ensures that every corner of your home or office enjoys a strong signal, eliminating dead zones and enhancing your communication experience.
Multi-Network Compatibility
This booster is compatible with major UK networks including O2, Vodafone, giffgaff, and Sky Mobile. No matter your provider, you can enjoy improved voice calls and text messaging, making it a versatile solution for all users.
User-Friendly Installation
Setting up the Calls - 150m2 Mobile Signal Booster is a breeze. With a complete kit that includes all necessary components, you can have it up and running in no time, ensuring hassle-free installation and maintenance.
Supports Multiple Users
Designed for modern households, this booster can support up to 15 simultaneous users. Whether it's family members or colleagues, everyone can enjoy enhanced signal strength without interruptions.
Reliable Performance
With a gain of up to 50 dB, the Calls - 150m2 Mobile Signal Booster significantly amplifies weak signals, ensuring clear voice calls and fast text messaging. Say goodbye to dropped calls and hello to reliable communication.
Compact and Stylish Design
The sleek and compact design of the booster allows it to blend seamlessly into any environment. Its modern aesthetics not only enhance functionality but also add a touch of style to your space.
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 O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Booster 150m2 Coverage Indoor Signal Booster UK Mobile Booster
It boost Calls signal on 900MHz frequency, the frequency used in UK used by mobile networks to deliver their mobile services: 2G (also known as GSM). It can boost all networks on O2, Vodafone, giffgaff, TalkTalk, Lyca Mobile, Lebara, Tesco, Talk and Sky Mobile for improving Voice Calls & Text signal. Boost indoor signal coverage up to 150 m2, is ideal for small apartments or offices.
No Miss Important Calls
SMS Text Messages Quickly
Reception Up to 150 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 | Voice Calls & Text (Band 8) |
| Country | United Kingdom |
| Boost All On | O2 (2G) Vodafone (2G) giffgaff (2G) Lebara (2G) Lyca Mobile (2G) Sky Mobile (2G) TalkMobile (2G) TalkTalk (2G) Tesco (2G) |
| Users Supporting | 15 Simultaneously |
| Band | Single Band 8 |
| Frequency | 900MHz |
| Gain(dB) | Uplink Gp≥45; Downlink Gp≥50 |
| Up-link | 890~915 MHz |
| Down-link | 935~960 MHz |
| Export Power(Po) | ≥18dBm |
| 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 | G150 / MBG150gb |
| Product Type | Band 8 (900 MHz) Calls / Voice Mobile Signal Booster |
| Frequency Band | Band 8 — 900 MHz (GSM / UMTS) |
| Uplink Frequency | 890 – 915 MHz |
| Downlink Frequency | 935 – 960 MHz |
| Supported Standards | 2G GSM, 3G UMTS (voice calls & SMS) |
| Max Gain | Up to 65 dB |
| Max Output Power | 20 dBm (EIRP) |
| Indoor Coverage | Up to 150 m² (1,614 sq ft) |
| Noise Figure | ≤ 5 dB |
| Impedance | 50 Ω |
| Power Supply | AC 100–240 V, 50/60 Hz (UK plug included) |
| Power Consumption | ≤ 10 W |
| Operating Temperature | -10°C to +55°C |
| Dimensions (Booster Unit) | 160 × 110 × 25 mm |
| Weight | Approx. 450 g |
| Installation | DIY, plug-and-play, ~20 minutes |
| Ofcom Status | licence-exempt (mobile repeater) |
What's in the Box
| Item | Quantity | Description |
|---|---|---|
| Booster Unit (G150) | 1 | Band 8 900 MHz signal amplifier with LED status indicators |
| Outdoor Omni Antenna | 1 | Wall/pole-mount, 5 dBi gain, N-type connector |
| Indoor Panel Antenna | 1 | Wall/ceiling mount, 5 dBi gain, N-type connector |
| Coaxial Cable | 1 | 10 m low-loss 5D-FB, N-type both ends |
| 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 8 900 MHz Calls | SMS |
|---|---|---|---|
| O2 | MNO | Yes (2G GSM / 3G UMTS) | Yes |
| Vodafone | MNO | Yes (2G GSM / 3G UMTS) | Yes |
| giffgaff | MVNO (O2) | Yes | Yes |
| Sky Mobile | MVNO (O2) | Yes | Yes |
| Lebara | MVNO (Vodafone) | Yes | Yes |
| Lycamobile | MVNO (Vodafone) | Yes | Yes |
| Tesco Mobile | MVNO (O2) | Yes | Yes |
| VOXI | MVNO (Vodafone) | Yes | Yes |
Note: The G150 amplifies voice calls and SMS on 2G/3G. It does not boost 4G LTE or 5G data. For 4G data boosting, see the Boost4U C100 or CVC models.
Pricing & Shipping
| Item | Detail |
|---|---|
| Current Price | £85.00 GBP (was £115.00 — save 26%) |
| 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 |
|---|---|
| ✅ Only £85.00 — one of the cheapest Ofcom-compliant boosters in the UK | ❌ Voice-only (2G/3G) — does not boost 4G LTE or 5G data speeds |
| ✅ 150 m² coverage suits most UK flats, small houses and offices | ❌ Band 8 only — works with O2/Vodafone networks, not EE or Three |
| ✅ Plug-and-play DIY install in ~20 minutes, no engineer needed | ❌ Requires at least 1–2 bars of outdoor signal to amplify effectively |
| ✅ Works with 7+ UK networks on O2/Vodafone infrastructure | ❌ Outdoor antenna must be mounted on exterior wall or roof |
| ✅ 365-day money-back guarantee and lifetime support | ❌ Not suitable for buildings over 150 m² or with thick stone walls |
| ✅ Low power consumption (≤10 W) — costs pennies to run | ❌ Cable length fixed at 10 m; longer runs require upgrade |
| ✅ Licence-exempt under Ofcom regulations for mobile repeaters | ❌ May interfere with other devices if installed incorrectly |
How It Works
The G150 operates on a simple three-stage relay principle. The outdoor antenna captures the weak 900 MHz signal from the nearest O2 or Vodafone mast and passes it via coaxial cable to the booster unit. The booster amplifies the signal by up to 65 dB and rebroadcasts it indoors through the panel antenna, giving phones a stable 2G/3G connection for calls and texts.
The system is bidirectional: it also amplifies the signal your phone sends back to the mast, ensuring both incoming and outgoing call quality improve. Automatic gain control (AGC) prevents oscillation and adjusts output based on incoming signal strength.
Installation Steps
- Find the strongest outdoor signal using your phone's signal meter or a free app like Network Cell Info.
- Mount the outdoor antenna on an exterior wall, pole or roof, pointing toward the nearest mast.
- Run the 10 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 signal on multiple phones — expect 3–5 bars where previously 0–1.
Frequently Asked Questions
1. Will the G150 work with my network?
The G150 works with all networks that use O2 or Vodafone's 900 MHz Band 8 infrastructure: O2, Vodafone, giffgaff, Sky Mobile, Tesco Mobile, Lebara, Lycamobile and VOXI. It does not work with EE or Three, which use different frequency bands for voice.
2. Does the G150 boost 4G internet data?
No. The G150 is a voice-only booster that amplifies 2G GSM and 3G UMTS signals on 900 MHz for calls and SMS. It does not improve 4G LTE or 5G data speeds. If you need 4G data boosting, consider the Boost4U C100 (home) or CVC (vehicle) models.
3. How big an area does the G150 cover?
The G150 covers up to 150 m² (approximately 1,614 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 larger properties, the C100 model offers up to 300 m².
4. Is the G150 legal in the UK?
Yes. The G150 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 G150 meets the technical requirements for exemption.
5. Do I need an engineer to install it?
No. The G150 is designed for DIY installation. The complete kit includes all hardware, and most customers install it in 15–20 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 signal at all?
A booster cannot create signal where none exists. The G150 requires at least 1–2 bars of usable 900 MHz 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 stop my calls from dropping?
Yes, in most cases. Dropped calls on O2 and Vodafone are frequently caused by weak 900 MHz indoor signal. By amplifying this band, the G150 provides a stable connection that reduces or eliminates dropped calls, especially in rural areas, basements and buildings with thick walls.
8. How much does it cost to run?
The G150 consumes ≤10 W, which costs approximately £10–15 per year in electricity at current UK rates. It is designed to run continuously 24/7 and has no ongoing subscription fees.
9. Can I use it in a listed building or rented flat?
The indoor unit is small (160 × 110 mm) and can be placed on a shelf or mounted with adhesive strips, requiring no structural changes. The outdoor antenna may require landlord permission if you rent. For listed buildings, consult your local conservation officer before drilling exterior walls.
10. What is the return policy if it doesn't work?
Boost4U offers a 365-day money-back guarantee. If the G150 does not improve your 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.
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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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