5 Bars Everywhere Guaranteed

Or Your Money Back
We stand behind our products with a 100% satisfaction guarantee
365 Days Money Back
Free Shipping
Lifetime Support
Quick Start Guide
A mobile signal booster kit including various components such as an antenna, cables, and an amplifying module designed to enhance 4G LTE and Calls signal strength. CG100 Dual Band 20 8 Mobile Signal Booster UK | 4G
Man sitting on a couch using a smartphone with a blurred outdoor background UK Mobile Phone Signal Booster Improve Signal
4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters Mobile Signal Booster Panel Antenna
4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters Mobile Signal Booster Cable
4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters Mobile Signal Booster Whip Antenna
4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters Mobile Signal Booster Package
4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters Mobile Signal Booster How Panel Antenna Works
4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters Mobile Signal Booster How Whip Antenna Works
4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters Mobile Signal Booster Whip Antenna Improved Signal Up to 5 Bars
4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters Mobile Signal Booster 4G to WiFi
4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters Mobile Signal Booster How it Works

4G LTE & Calls - 100m2 (O2/Vodafone/giffgaff/Sky Mobile) Mobile Signal Booster

  • In United Kingdom this booster works with:
  • £185.99 GBP

    Upgrade External Cable To Metres: No

    No
    No
    20 M
    30 M
    40 M
    50 M

    Upgrade External Aerial: No

    No
    No
    Yes

    Upgrade Protector: No

    No
    No
    Yes

    Improve your mobile signal quality by using 4G LTE boosters tailored for different UK providers such as O2, Vodafone, Giffgaff, and Sky Mobile. Enhance your cellular reception with these mobile boosters.

    Frequently Bought Together

    Total price:£358.94
    Description
    Dual Band 20 & 8 (800 / 900 MHz) FDD LTE · 4G Data + 2G Voice/SMS · ≥45 dB Uplink · ≥50 dB Downlink · ≥10 dBm Output · 5dBi Omni + 3dBi Whip · 10m Cable · 100m² · 10 Users · UKCA / CE / RoHS

    Boost4U CG100 Dual-Band 4G LTE & Calls Signal Booster UK — Band 20 (800MHz) & Band 8 (900MHz), O2/Vodafone 4G Data + 2G Voice, 100m², 10 Users, ≥10dBm, £185.99

    The Boost4U CG100 is the only Band 20+8 dual-band booster: it amplifies O2/Vodafone 4G LTE data on Band 20 (800 MHz) and O2/Vodafone 2G voice calls + SMS on Band 8 (900 MHz) in one box, with ≥45 dB uplink and ≥50 dB downlink gain, ≥10 dBm output, a 5 dBi omni outdoor antenna, a 3 dBi whip indoor antenna, a 10 m coax and an AC-mains DC 5V adapter, covering up to 100 m² for up to 10 users, at £185.99 GBP.

    £185.99 GBP · Free UK Delivery · 365-Day Return
    Boost4U CG100 dual-band Band 20 Band 8 800 900MHz O2 Vodafone 4G data plus 2G voice home signal booster, 100m2, 10 users, 5dBi omni, 3dBi whip, 10m cable, £185.99

    The Boost4U CG100 is the Band 20 (800 MHz) + Band 8 (900 MHz) dual-band FDD LTE mobile signal booster priced at £185.99 GBP that delivers O2/Vodafone 4G LTE data plus O2/Vodafone 2G voice calls and SMS in one device, with ≥45 dB uplink gain, ≥50 dB downlink gain and ≥10 dBm maximum output power across up to 100 m² (1,076 ft²) for up to 10 simultaneous users, using a 5 dBi omni-directional outdoor antenna (upgradeable to a high-gain Yagi for weak -97 to -105 dBm donor signal), a 3 dBi whip indoor antenna, a 10 m outdoor low-loss coaxial cable and an AC 100–240V 50/60Hz UK 3-pin adapter outputting DC 5V. On Band 20 (800 MHz) it boosts O2, Vodafone and Three 4G data (plus giffgaff/Sky/Talkmobile/Lyca/Tesco networked 4G); on Band 8 (900 MHz) it boosts O2/Vodafone 2G voice calls and SMS. EE receives 4G data via Band 20 but not EE 2G voice (EE voice rides Band 3 1800 MHz). The CG100 does not boost 3G (Band 1 2100 MHz) or 5G. It is UKCA/CE/RoHS certified, Ofcom licence-exempt, weighs about 450 g for the unit (3.0 kg shipping), installs in 10–15 minutes, ships free to 15 European countries in 10–15 working days after 1–2 days handling, and carries a 365-day money-back guarantee.

    Product Identity & Pricing

    Product Name Boost4U CG100 — 4G LTE & Calls, 100m² (O2 / Vodafone / giffgaff / Sky Mobile range)
    Model / MPN CG100 / MBCG100gb
    SKU MBCG100gb
    GTIN-13 / EAN 6920702763512
    Brand Boost4U (vendor UKMobileBooster.com)
    Category CG Dual-Band 4G Mobile Signal Boosters
    Base Price £185.99 GBP (base No/No/No); no compare-at was-price
    Upgrade Options 20m cable +£20; 30m +£30; 40m +£40; 50m +£50; External high-gain Yagi aerial +£20; Surge Protector +£20 (combinations up to £305.99)
    Indoor Coverage Up to 100 m² (1,076 ft²) — single room, small flat, home office, small shop or holiday cottage
    Simultaneous Users Up to 10
    Custom Expansion Expandable coverage by adding indoor antenna if the outside signal is strong (up to 2 indoor antennas via splitter)
    Weight Booster approx. 450 g; shipping weight 3.0 kg
    Booster Dimensions 170 × 110 × 30 mm
    Published / Updated Updated 2026-10-18

    Frequency Bands, Gain, Output & Electrical Specifications

    Parameter Value
    Frequency Band Dual Band 20 & 8 (800 & 900 MHz) FDD LTE
    Uplink — Band 20 832 – 862 MHz (800 MHz)
    Downlink — Band 20 791 – 821 MHz (800 MHz)
    Uplink — Band 8 890 – 915 MHz (900 MHz)
    Downlink — Band 8 935 – 960 MHz (900 MHz)
    Supported Services 4G LTE data (Band 20) + 2G voice calls + SMS (Band 8, O2/Vodafone) (VoLTE where available)
    Uplink Gain (Gp) ≥ 45 dB
    Downlink Gain (Gp) ≥ 50 dB
    Max Output Power (Po) ≥ 10 dBm
    Noise Figure ≤ 5 dB
    Operating Temperature -10°C to +55°C
    Ports BS (outdoor donor), MS (indoor server)
    Unsupported Bands No 3G UMTS Band 1 (2100 MHz); no 5G NR on any band; no EE Band 3 (1800MHz) 2G voice

    Antennas, Cable & Separation

    Outdoor Antenna Omni-directional, 5 dBi (included); upgrade to a high-gain Yagi directional aerial for weak donor signal at -97 to -105 dBm, aimed at the nearest mast
    Indoor Antenna Whip antenna, 3 dBi (placed centrally in the 100m² space); expandable up to 2 indoor antennas via a splitter when outside signal is strong
    Cable Included 10 m outdoor low-loss coaxial cable (upgradeable to 20m +£20, 30m +£30, 40m +£40 or 50m +£50 for a remote roof or outbuilding)
    Minimum Antenna Separation 10 m vertical separation between outdoor omni and indoor whip to prevent self-oscillation
    Outdoor Donor Signal Required At least 1–2 bars of usable outdoor signal (Band 20 and/or Band 8) at the omni mounting point; Yagi upgrade suits -97 to -105 dBm fringe signal
    5dBi omni outdoor antenna on a UK home roof pulling Band 20 and Band 8 donor signal for the CG100

    5 dBi Omni Donor Antenna

    The supplied omni picks up signal in all directions from a clear mounting spot; for a weak -97 to -105 dBm fringe donor, the paid high-gain Yagi focuses on the nearest mast.

    3dBi whip indoor antenna standing in a living room connected to the CG100 booster

    3 dBi Indoor Whip

    The whip re-broadcasts boosted 4G and calls across the 100m² space; a second indoor antenna can be added via splitter to extend to a second room when donor is strong.

    Power Supply, Certification & Installation

    Power Adapter Input AC 100 – 240 V, 50/60 Hz, UK 3-pin plug
    Power Adapter Output DC 5 V
    Certification UKCA / CE / RoHS; Ofcom licence-exempt (mobile repeater class)
    Installation Time 10–15 minutes, plug-and-play; no tools for the basic setup
    5G NR Support No — 5G is not boosted on any band
    3G UMTS Support No — Band 1 (2100 MHz) 3G is not boosted; relies on 4G VoLTE where offered
    Display / Meter No LCD signal-strength meter; status read from LED indicators and a phone's bar count
    Warranty / Returns 365-day money-back guarantee; return shipping deducted from refund
    Delivery Free shipping; handling 1–2 working days, UK transit 10–15 working days; 15 destination countries

    UK Network Compatibility Matrix

    Carrier / MVNO Service Boosted Notes
    O2 4G LTE (Band 20 800MHz) + 2G voice/SMS (Band 8 900MHz) Both data and 2G calls boosted; the core O2 user target of the CG100
    Vodafone 4G LTE (Band 20 800MHz) + 2G voice/SMS (Band 8 900MHz) Both data and 2G calls boosted; the core Vodafone user target of the CG100
    giffgaff / Sky Mobile / Talkmobile / Lycamobile / Tesco Mobile / Lebara / TalkTalk 4G (Band 20, O2 network) + 2G where networked on Band 8 O2-networked MVNOs; 4G data boosted on Band 20, and 2G voice coverage depends on the MVNO's own 2G arrangement
    Three 4G LTE (Band 20 via O2 MOCN) Three 4G data rides Band 20; no Three 2G voice on Band 8
    EE 4G LTE data (Band 20) — no EE 2G voice EE 4G data passes on Band 20; EE 2G voice uses Band 3 1800MHz and is NOT covered
    Asda / BT / Freedom Pop / iD Mobile / Orange / Plusnet / Smarty / T-Mobile / Virgin / The People's Operator 4G data only (Band 20) 4G-data users receive data; their 2G/voice is not on Band 8 and is not boosted

    What's in the Box

    CG100 Booster Unit 1 × dual-band Band 20+8 amplifier with status LED indicators (power, Band 20, Band 8)
    Outdoor Antenna 1 × 5 dBi omni-directional outdoor donor antenna (high-gain Yagi available as the paid upgrade)
    Indoor Antenna 1 × 3 dBi whip indoor antenna (a second indoor antenna supported via splitter)
    Outdoor Coax 1 × 10 m low-loss outdoor coaxial cable (upgradeable to 20/30/40/50m)
    Power Adapter 1 × AC 100–240V 50/60Hz UK 3-pin adapter, DC 5V output
    Mounting Parts Basic mounting hardware for the omni and whip
    Documentation English user manual with plug-and-play install guide and support card
    Complete CG100 dual-band booster kit: amplifier unit, 5dBi omni outdoor antenna, 3dBi whip, 10m coax, UK mains adapter

    Complete Kit

    Everything for a basic DIY home fit arrives in one box; the donor aerial and 10m cable are included, with paid cable extensions, the Yagi aerial and a surge protector available for weak or remote sites.

    Pros & Cons

    Pros

    • The only Band 20+8 combo in the lineup: O2/Vodafone users get BOTH 4G data on Band 20 and 2G voice calls/SMS on Band 8 from one device, at £185.99.
    • ≥45 dB uplink / ≥50 dB downlink gain with ≤5 dB noise figure lifts weak rural O2/Vodafone signal through stone and walls.
    • Band 8 900MHz has better in-building penetration than pure-data boosters, so calls stay connected where data-only units drop off.
    • Plug-and-play 10–15 minute setup, no engineer visit, no Ofcom licence, no monthly fee and no new SIM contract.
    • O2/Vodafone family members keep 4G data and voice together; giffgaff, Sky, Talkmobile, Lyca, Tesco networked 4G boosted on Band 20.
    • Supplied complete with 5 dBi omni, 3 dBi whip, 10 m coax and UK mains adapter; Yagi aerial and 20–50m cable upgrades available.
    • Covers up to 100 m² for up to 10 users in a single room, small flat, home office or small shop.
    • UKCA/CE/RoHS certified and Ofcom licence-exempt; 365-day money-back guarantee and free shipping to 15 European countries.

    Cons

    • Coverage tops out at 100 m² — it will not cover a whole large house, multiple floors or several rooms without a second antenna and strong donor.
    • EE 4G data passes on Band 20 but EE 2G voice (Band 3 1800MHz) is NOT boosted; EE call fallback users need a Band 20+3 unit instead.
    • No 3G (Band 1 2100MHz) and no 5G on any band; calls rely on 2G Band 8 or 4G VoLTE where offered.
    • It cannot solve a site with no donor signal outside; it amplifies the donor it receives rather than creating signal.
    • The supplied 5 dBi omni may need the paid high-gain Yagi upgrade at -97 to -105 dBm fringe signal behind a ridge or other buildings.
    • The included 10 m cable may need the 20/30/40/50 m upgrade for a remote roof or outbuilding.
    • Outdoor omni and indoor whip need 10 m vertical separation to prevent self-oscillation, which a small flat may struggle to fit.
    • Free delivery takes 10–15 working days after 1–2 days handling — not next-day; the unit has no LCD meter and the 10-user cap suits small spaces only.

    Spaces the CG100 Supports

    Small UK home living room where CG100 keeps O2/Vodafone 4G data and calls strong across 100m2

    Small Flat / Family Home

    A single flat or compact home keeps O2/Vodafone 4G and calls steady across the living area for up to 10 connected devices.

    Small UK home office or shop with the CG100 booster keeping 10 users on O2/Vodafone 4G and calls

    Home Office / Small Shop

    A compact office or shop floor serves up to 10 staff and devices on boosted 4G data and O2/Vodafone voice calls.

    Where the CG100 Works — 5 Usage Scenarios

    Small apartment or studio flat in the UK covered by CG100 O2/Vodafone 4G plus 2G calls across 100m2

    1. Small Apartment / Studio Flat

    A 100m² apartment or studio keeps O2/Vodafone 4G data and 2G calls steady across the main living space for up to 10 users.

    O2/Vodafone user family home where CG100 delivers dual-band 4G data and voice calls to every family member

    2. O2/Vodafone User Family Home

    A household on O2 or Vodafone keeps both 4G data and ordinary 2G voice calls working for every family member on the same SIM network.

    Rural weak-signal UK cottage where CG100 Band 8 900MHz penetrates stone and Band 20 lifts 4G

    3. Rural Cottage / Weak-Signal Home

    Band 8 900MHz penetrates stone and brick better, while Band 20 carries 4G data; pair the omni with the Yagi upgrade for -97 to -105 dBm fringe signal.

    Small office or shop floor served by CG100 for 10 simultaneous O2/Vodafone 4G and call users

    4. Small Office / Home Office / Shop

    A compact office, home office or shop floor serves up to 10 staff on boosted 4G data and voice calls with the plug-and-play mains unit.

    UK holiday cottage or let where guests on O2/Vodafone get 4G data and calls from the CG100

    5. Holiday Let / Holiday Cottage

    A holiday cottage keeps guests on O2/Vodafone connected with 4G data and calls; the 365-day guarantee covers a test fit before the season starts.

    Custom Your Solution — Expand to a Second Room

    Planning a custom CG100 solution adding a second indoor antenna via splitter to extend coverage to a second room when outside signal is strong

    Expandable coverage by adding indoor antenna if the outside signal is strong.

    1. Check the outdoor donor. When outside signal is strong (roughly -70 to -90 dBm, 3–4+ bars on the roof), a second indoor antenna will split and extend coverage; weak donor does not multiply by splitting.
    2. Map the zone. Plan the second room or corner beyond the 100m² whip's reach; keep both indoor antennas fed from the booster through a passive splitter.
    3. Add the second indoor antenna. The CG100 supports up to 2 indoor antennas total; place the second whip in the far room for even coverage.
    4. Choose cable length. The 10m standard cable suits a normal roof; add 20m +£20, 30m +£30, 40m +£40 or 50m +£50 for a remote roof or outbuilding.
    5. Add protection. A surge protector (+£20) shields the unit on an exposed roof mount; combinations reach up to £305.99.
    6. Keep separation. Maintain the 10m vertical gap between outdoor omni and indoor whips to prevent feedback, and test bars in each zone before fixing.

    Frequently Asked Questions — Real UK O2/Vodafone Dual-Band 4G+Voice User Questions

    How does the CG100 differ from the CD100 (Band 20+3) and the C100 (single Band 20)?

    The C100 is a single Band 20 unit for 4G data only with no voice. The CD100 pairs Band 20 with Band 3 (1800MHz) to boost EE 4G plus EE 2G voice, while O2/Vodafone users get 4G data only. The CG100 pairs Band 20 with Band 8 (900MHz) so O2/Vodafone users get BOTH 4G data and 2G voice calls from one box. Choose the CG100 if you are on O2 or Vodafone and need calls; choose Band 20+3 if EE voice matters; the single-band C100 suits 4G-data-only users on a tighter budget.

    What is the difference between Band 20 (800MHz) data and Band 8 (900MHz) voice on the CG100?

    Band 20 (800 MHz) carries O2, Vodafone and Three 4G data over long rural distances; Band 8 (900 MHz) carries O2/Vodafone 2G voice calls and SMS and penetrates walls and stone better than higher bands. The CG100 amplifies both at once, so an O2/Vodafone phone keeps its data session and ordinary calls connected where a data-only booster leaves calls dropping.

    How much area does "up to 100m²" cover, and why is it not a whole-house booster?

    Up to 100 m² (1,076 ft²) covers a single room, a small flat, a home office, a small shop or a holiday cottage. The ≥10 dBm home-class output and the single whip are sized for that footprint; a larger house or multiple floors needs a higher-output unit or a second indoor antenna with strong donor.

    How do 10 simultaneous users work on the CG100?

    The CG100 supports up to 10 phones or data devices connected at the same time, sharing boosted Band 20 data and Band 8 voice capacity — a small family, a home office or a compact shop. Beyond 10 active devices the shared RF capacity thins out; it is connected capacity, not a guaranteed 10 fast-speed lines at once.

    What do ≥45dB uplink, ≥50dB downlink gain and the ≥10dBm output mean?

    Gain in dB measures how much the amplifier strengthens the incoming signal: ≥45 dB uplink lifts the phone's signal back to the mast and ≥50 dB downlink lifts the mast's signal to the phone. Output in dBm measures final radiated strength; ≥10 dBm spreads the boosted signal across the 100 m² space without over-powering it.

    Does the CG100 boost EE calls?

    EE 4G data passes through Band 20, but EE 2G voice rides Band 3 (1800MHz), which the CG100 does not cover, so EE call fallback is not boosted. If you need both EE data and EE voice, the Band 20+3 unit is the correct choice; the CG100 is purpose-built for O2/Vodafone data plus voice.

    Should I use the included 5dBi omni or the Yagi directional upgrade?

    The supplied 5 dBi omni works with a clear mounting spot showing 1–2+ bars. For weak -97 to -105 dBm fringe signal behind a ridge or other buildings, the paid high-gain Yagi aerial aims at the nearest mast and pulls a cleaner donor that the ≥45/50 dB gain then amplifies. Start with the omni and add the Yagi only if bars stay weak.

    How much outdoor donor signal does the CG100 need before it can work?

    At least 1–2 bars of usable outdoor signal on Band 20 and/or Band 8 at the omni mounting point, checked with a phone on the roof or wall. A booster amplifies the donor it receives; it cannot create signal where none exists outside, and adding a second indoor antenna only helps when outside signal is already strong.

    What does the 365-day return policy cover, and how long does delivery take?

    The CG100 carries a 365-day money-back guarantee: if it does not work for your location, return it by mail within 365 days for a refund; return shipping is deducted from the refund (ReturnShippingFees), so it is not a free-return label. Standard delivery is free: handling takes 1–2 working days and UK transit 10–15 working days, so it is not next-day, and the same policy covers 15 European countries (GB, DE, FR, IT, ES, NL, BE, AT, SE, DK, FI, IE, PT, PL, CZ).

    Does the CG100 support VoLTE, and will it boost 5G or 3G?

    The CG100 boosts 4G LTE data (Band 20) and 2G voice/SMS (Band 8); calls over 4G work when the handset and network offer VoLTE. It does not boost 5G NR on any band and it does not boost 3G UMTS Band 1 (2100 MHz), so a device stuck on 3G fallback will not be helped. If 5G speed or 3G fallback is the main requirement, a different unit on those bands is needed.

    Enhanced 4G LTE Coverage

    Experience superior 4G LTE signal strength with our mobile signal booster, designed to cover up to 100m². Perfect for small apartments or offices, it ensures you stay connected without interruptions.
    4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature

    Compatible with Major Networks

    This booster is compatible with leading UK networks including O2, Vodafone, giffgaff, and Sky Mobile. Enjoy seamless connectivity across multiple devices and users, making it ideal for households with diverse network needs.
    4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature

    Easy Installation

    Our mobile signal booster comes with a complete kit, including all necessary components for a hassle-free setup. Simply follow the included instructions to enhance your mobile signal in no time.
    4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature

    Dual Band Functionality

    Boost both 4G LTE and 2G signals simultaneously with our dual-band technology. This ensures that you can make clear voice calls and send texts while enjoying fast data speeds.
    4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature

    Reliable Performance

    Say goodbye to dropped calls and slow data. Our booster guarantees a consistent connection, allowing you to send and receive SMS quickly and enjoy faster uploads and downloads.
    4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature

    Comprehensive Coverage

    With a coverage area of up to 100m², this booster is perfect for various environments, including homes, offices, and garages. Ensure that every corner of your space has reliable mobile signal strength.
    4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature

    3 Steps to Full Bars

    1. Place the Outdoor Antenna

    Mount the antenna where you get the best signal.
    4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Install

    2. Connect the Booster Inside

    Plug in the booster and connect to the antenna.
    4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Install

    3. Enjoy Full Bars Everywhere

    Clear calls, fast data, and no more dead zones.
    4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Install

    4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters

    It boost 4G LTE and Calls signal on 800MHz, 900MHz frequency, the frequencies used in UK by mobile networks to deliver their mobile services: 4G and 2G (also known as GSM). It can boost UK O2, Vodafone, Sky Mobile, giffgaff, Talkmobile, Lycamobile and Tesco network operators for improving 4G LTE and Calls signal. Also improving 4G LTE signal on Three, EE, BT, Asda, Virgin, iD Mobile, Freedom Pop, Orange, Plusnet, Smarty Mobile, T-Mobile and The People's Operator. 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 Voice Calls and Texts. 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 2G mobile phone networks, will provide coverage on both 800MHz, 900MHz frequency simultaneously. It's Dual Band booster and is an ESSENTIAL if many people in the same household are on different mobile phone networks!


    Wow 4G/2G Calls
    Eliminates Dropped Calls
    Clear Voice
    No Miss Important Calls
    Consistent Connection
    Reliable 4G/LTE Data
    Send/Receive SMS
    SMS Text Messages Quickly
    4G/LTE Internet
    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.
    4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters cables

    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
    4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters higher gain yagi antenna

    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.
    4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters surge protector

    Specification

    (scroll to view all)
    Application & Bands [4G/LTE & Voice Calls] (Band 20, 8)
    Country United Kingdom
    Boost All On EE (4G)
    O2 (4G & 2G)
    Vodafone (4G & 2G)
    Three (4G)
    Asda (4G)
    BT (4G)
    Freedom Pop (4G)
    Giffgaff (4G & 2G)
    iD Mobile (4G)
    Talkmobile (4G & 2G)
    Lycamobile (4G & 2G)
    Lebara (2G)
    TalkTalk (2G)
    Orange (4G)
    Plusnet Mobile (4G)
    Sky Mobile (4G & 2G)
    Smarty Mobile (4G)
    Tesco (4G & 2G)
    The People's Operator (4G)
    T-Mobile (4G)
    Virgin (4G)
    Users Supporting 10 Simultaneously
    Band Dual Band 20 & 8
    Frequency 800MHz & 900MHz
    Gain(dB) Uplink Gp≥45; Downlink Gp≥50
    Up-link 832~862 MHz; 890~915 MHz
    Down-link 791~821 MHz; 935~960 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
    Warming Tips:
  • Band Confirmation: This booster can boost signals on Band 20 or 8, please check the band of your devices firstly.
  • For iPhone: Dial *3001#12345#* → Press call button → Click 'Serving Cell Info' → Check 'Freq Band Indicator'.
  • For Android: Download 'LTE Discovery' APP → Click ‘SIGNALS’ → Check 'EARFCN'. More refer to Quick Start Guide .
  • External Signal Needed: The signal booster can only amplify signal but can't create signal. If there is no signal outside, it won't work, please make sure you get 1-2 bars signal outside.
  • Custom your solution

    Expandable coverage by adding indoor antenna if the outside signal is strong.



    How It Works


    how 4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters work for home office

    1

    Receives signal
    The powerful antenna reaches out to access a voice and 3G, 4G, and LTE data signal, and delivers it to the booster

    2

    Boosts signal
    The booster receives the signal, amplifies it, and serves as a relay between your phone and the nearest cell tower.

    3

    Broadcasts signal
    Your devices get increased cell reception, and calls and data are fed through the booster back to the network.


    Get stronger signal


    Installation

    1. Connect the indoor antenna to the MS port.
    2. Connect the outdoor antenna to the BS Port.
    3. Install the outdoor antenna and keep a minimum vertical distance of 10 meters from the indoor antenna.
    4. Point the outdoor antenna to the direction where you know there is possibly a higher signal strength from the base station.
    5. Power on the booster and check the signal strength.
    6. 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.

    4G LTE Mobile Signal Booster O2 Signal Booster Vodafone Signal Booster Giffgaff Signal Booster Sky Mobile Signal Mobile Coverage UK Mobile Boosters signal coverage

    Application Scenarios



    Home

    Office

    Garage

    Metal Buildings
    Tags: CG100 dual band 4G signal booster UK Band 20 Band 8; CG100 O2 Vodafone 4G plus 2G calls booster; Band 20 800MHz Band 8 900MHz dual-band home repeater 100m²; £185.99 O2 Vodafone voice data booster 10 users UK; rural cottage small flat 4G+calls booster CG100
    CG100 dual band 4G signal booster UK, Band 20 Band 8 800 900MHz O2 Vodafone booster, O2 Vodafone 4G data plus 2G calls booster, 100m2 10 users home booster, ≥45dB uplink ≥50dB downlink ≥10dBm, Boost4U CG100 MBCG100gb, £185.99, rural cottage small flat home office 4G+voice booster UK
    buy O2 Vodafone dual band 4G booster UK home; O2 4G plus 2G voice signal booster 100m²; Vodafone 4G data and calls booster rural cottage; giffgaff Sky Talkmobile O2 network 4G booster; small flat home office shop 4G calls booster 10 users; Boost4U CG100 price £185.99 MBCG100gb; Band 20+8 home repeater Yagi weak donor -97 dBm UK order; holiday cottage O2 Vodafone guest 4G booster UK
    what is a Band 20 Band 8 dual band 4G booster for O2 Vodafone; why does O2 Vodafone 4G use Band 20 800MHz and voice Band 8 900MHz; how does a 4G booster keep 2G calls connected Ofcom licence exempt UK; how far does a 100m² booster cover vs a whole home unit; do signal boosters need outside signal bars to work; what do 45dB 50dB gain and 10dBm output mean; omni vs Yagi for weak -97 to -105 dBm donor UK; can I add a second indoor antenna to extend coverage
    CG100 vs CD100 Band 20+3 EE voice booster; CG100 vs C100 single Band 20 data-only booster; Band 20+8 vs Band 20+3 which should O2 Vodafone users buy; CG100 vs cheap Amazon booster that did nothing; 100m² vs larger home booster sizing; CG100 vs high-gain Yagi aerial upgrade; O2 Vodafone voice booster vs EE voice booster value UK; CG100 vs Band 3 1800MHz EE capacity booster

    Why You'll Love It

    Discover the features that make our product stand out

    Powerful Signal Boost

    Experience up to 5 bars of signal strength in areas with weak coverage

    Easy Installation

    Set up in minutes with our simple plug and play system

    Networks Supported

    Works with mobile networks and multiple devices simultaneously

    Fast Speeds

    Enjoy faster downloads and seamless streaming with improved connectivity

    Crystal Clear Calls

    Say goodbye to dropped calls and poor voice quality

    Wide Coverage Area

    Covers wider square meters for complete home or office coverage
    Award-Winning Signal Booster

    Award-Winning Signal Booster

    2026 Winner

    Smart Features, Made Simple

    Experience cutting-edge technology designed for everyday use

    Easy Setup

    Get started in minutes with our simple plug-and-play installation

    Smart Technology

    Advanced features that adapt to your needs automatically

    Energy Efficient

    Save power with intelligent energy management systems

    Reliable Performance

    Built to last with premium components and quality assurance

    24/7 Support

    Expert assistance whenever you need it, day or night

    Secure & Safe

    Protected with industry-leading security standards