# Calls - 100m2 (O2/Vodafone/giffgaff/Sky Mobile) Mobile Signal Booster # Mobile Signal Booster for Calls UK — Boost4U G100 (O2 / Vodafone / giffgaff / Sky) **The Boost4U G100 is a plug-and-play Band 8 (900 MHz) mobile signal booster designed specifically to improve voice calls and SMS text messages for O2, Vodafone, giffgaff and Sky Mobile users in the UK, covering up to 100 m², priced at £75.00 with free UK shipping and a 365-day money-back guarantee — making it the cheapest Ofcom-compliant call booster on the UK market.** Engineered for homes, flats and small offices where mobile calls drop or fail to connect, the G100 amplifies the 900 MHz Band 8 frequency used by O2 and Vodafone for 2G/3G voice calls and SMS. The complete kit includes the booster unit, indoor whip antenna, outdoor omni antenna, 5 m cable, power adapter and mounting hardware — no engineer required. ##### **Enhanced Call Clarity** Experience crystal-clear voice calls with our mobile signal booster. Designed to amplify signals on the 900MHz frequency, it ensures you never miss an important call again, providing reliable connectivity even in challenging environments. ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Feature1-1.png?v=1780277092) ##### **Wide Coverage Area** Boost your mobile signal across an impressive area of up to 100 square meters. Perfect for small apartments or offices, this device guarantees improved reception for multiple users and devices simultaneously. ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Feature2.png?v=1780223075) ##### **Complete Installation Kit** Our mobile signal booster comes with a complete installation kit, including all necessary components. Enjoy a hassle-free setup process, allowing you to enhance your mobile signal quickly and efficiently. ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Feature3.png?v=1780223075) ##### **Multi-Network Compatibility** Compatible with major UK networks such as O2, Vodafone, giffgaff, and more, this booster ensures that you can enjoy improved signal strength regardless of your mobile provider. ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Feature4.png?v=1780223075) ##### **User-Friendly Design** Designed for simplicity, our mobile signal booster is easy to install and maintain. With straightforward instructions, you can set it up without any technical expertise, ensuring a seamless experience. ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Feature5.png?v=1780223075) ##### **Upgrade Options Available** Tailor your booster to your needs with upgrade options for external cables and antennas. Enhance performance and coverage, ensuring optimal signal strength in any environment. ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Feature6.png?v=1780223075) ## **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](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Install-1.gif?v=1780223819) ## 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](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Install-2.gif?v=1780223819) ## 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](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Install-3.gif?v=1780223819) ## Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks 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 **100 m2**, is ideal for small apartments or offices. * * * **Clear Voice** No Miss Important Calls **Send/Receive SMS** SMS Text Messages Quickly **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. ![Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks cables](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Cable.jpg?v=1693125491) * * * ### 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](https://www.ukmobilebooster.com/pages/quick_start_guide) ![Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks higher gain yagi antenna](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/ProductPageHigherGainYagiAntenna.webp?v=1600640184) * * * ### 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. ![Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks surge protector](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/ProductPageSurgeProtector.webp?v=1600640184) ### Specification (scroll to view all) 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 10 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) ≥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 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](https://www.ukmobilebooster.com/pages/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.** ![UK Mobile Booster Expand Cell Coverage with 2 Indoor Antennas](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/Expand-Cell-Coverage-with-2-Indoor-Antenna.png?v=1700361962) ### **How It Works** ![how Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks work for home office](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/ProductPageHIWhomeoffice-2.webp?v=1650634397) #### 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** ![how Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks work for home office](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/ProductPagenormalcoverage-2.webp?v=1650634397) #### 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. ![how Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks work for home office](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/ProductPageboostedcoverage-2.webp?v=1650634397) #### 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** 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.](https://drive.google.com/file/d/1Uch5legGJsKTzLO9PTGpgsKEnZGEq7TH/view) ![Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks signal coverage](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/Coverage.jpg?v=1698191834) ### **Application Scenarios** ![Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks home application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-home.png?v=1697980834) **Home** ![Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks office application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-office.png?v=1697980832) **Office** ![Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks garage application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-garage.png?v=1697980834) **Garage** ![Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks metal buildings application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-metal-buildings.png?v=1697980834) **Metal Buildings** ## Specifications Boost4U G100 Technical Specifications Parameter Value Model G100 / MBG100gb Product Type Band 8 (900 MHz) Mobile Call Signal Booster / Repeater Frequency Band Band 8 — 900 MHz (GSM / UMTS) Uplink Frequency 890 – 915 MHz Downlink Frequency 935 – 960 MHz Max Gain Up to 60 dB Output Power Up to 17 dBm (Ofcom licence-exempt limit) Indoor Coverage Up to 100 m² (1,076 ft²) — single room / small flat Supported Networks (UK) O2, Vodafone, giffgaff, Sky Mobile, Lebara, Lycamobile, Tesco Mobile Supported Services Voice calls (2G GSM / 3G UMTS), SMS text messages Simultaneous Users Unlimited (multiple users and devices at once) Power Supply AC 100–240 V, 50/60 Hz; DC 12 V / 1 A adapter included Dimensions (Booster Unit) 170 × 110 × 30 mm Weight Approx. 420 g (booster only) Installation Plug-and-play; no tools required for basic setup Cable Included 5 m 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 Warranty Lifetime technical support; 365-day money-back guarantee ## What Is in the Box Item Quantity Band 8 Booster Unit (G100) 1 Indoor Whip Antenna (3 dBi) 1 Outdoor Omni Antenna (5 dBi) 1 5 m Low-Loss Coaxial Cable 1 UK Power Adapter (12 V / 1 A) 1 Mounting Bracket & Screws 1 set Quick Start Guide (English) 1 ## Compatible UK Mobile Networks The G100 boosts Band 8 (900 MHz), which is used by O2 and Vodafone for 2G/3G voice calls and SMS. All MVNOs running on these networks are also supported. Network Band 8 (900 MHz) Voice SMS G100 Compatible O2 Yes Yes Yes Vodafone Yes Yes Yes giffgaff (O2) Yes Yes Yes Sky Mobile (O2) Yes Yes Yes Tesco Mobile (O2) Yes Yes Yes Lebara (Vodafone) Yes Yes Yes Lycamobile (O2) Yes Yes Yes EE No (EE uses 1800 MHz for calls) No No Three No (Three does not use 900 MHz) No No ## Pricing, Shipping & Returns Item Detail Current Price £75.00 GBP (was £95.00 — save 21%) 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 G100's hardware, price point and intended use case. ### Pros - **Lowest price in class:** At £75.00 the G100 is the cheapest Ofcom-compliant mobile signal booster in the UK — under half the price of comparable 4G boosters. - **Dedicated call & SMS boosting:** Band 8 (900 MHz) is the primary voice frequency for O2 and Vodafone, delivering reliable call quality and text delivery. - **Works with O2 and Vodafone + all their MVNOs:** One device covers giffgaff, Sky Mobile, Tesco Mobile, Lebara, Lycamobile and more. - **Plug-and-play install:** Most users complete setup in 10–15 minutes without tools or an engineer. - **Multiple simultaneous users:** No per-device limit — the whole household can make calls and send texts at once. - **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 - **Voice and SMS only — no 4G/5G data:** The G100 boosts Band 8 (900 MHz) for calls and texts only. It does not improve mobile internet speeds. For 4G data, choose the Boost4U C100 (Band 20). - **O2 / Vodafone networks only:** Does not work with EE or Three, which use different frequencies for voice. Check your network before buying. - **100 m² max coverage:** Suitable for one room or a small flat; larger homes need a higher-coverage model or extended antenna kit. - **Requires at least 1 bar outdoors:** A booster cannot create signal where none exists — the outdoor antenna must receive a usable 900 MHz signal. - **Standard cable is 5 m:** Homes needing the antenna on the roof may require the 15 m cable upgrade. - **No built-in LCD / signal meter:** 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 G100 Works The G100 is a bidirectional RF repeater optimised for voice calls. It follows a three-step signal path: 1. **Capture:** The outdoor omni antenna picks up the weak 900 MHz voice signal from the nearest O2 or Vodafone mast. 2. **Amplify:** The booster unit filters and amplifies both downlink (tower-to-phone) and uplink (phone-to-tower) signals by up to 60 dB. 3. **Redistribute:** The indoor whip antenna rebroadcasts the amplified signal throughout the 100 m² coverage zone, ensuring clear calls and reliable SMS delivery. ## Installation Steps (10–15 Minutes) 1. Find the strongest outdoor signal spot (usually near a window or on the roof) using your phone's signal bars during a test call. 2. Mount the outdoor omni antenna at that spot, pointing toward the nearest mast. 3. Run the 5 m coaxial cable from the outdoor antenna to the booster unit inside. 4. Screw the indoor whip antenna onto the booster unit. 5. Plug in the 12 V power adapter. The LED indicators will show power and signal status. 6. Wait 30–60 seconds for the booster to sync, then make a test call indoors. ## Frequently Asked Questions (10 Real UK User Questions) ### 1\. Does the G100 improve mobile data (4G/5G internet)? No. The G100 is a Band 8 (900 MHz) booster designed specifically for voice calls and SMS text messages. It does not amplify 4G LTE or 5G data frequencies. If you need to improve mobile internet speeds, consider the Boost4U C100 4G LTE booster (Band 20 / 800 MHz). Many users install both — the G100 for calls and the C100 for data. ### 2\. Will this booster work with my network — O2, Vodafone, giffgaff or Sky? Yes. The G100 boosts Band 8 (900 MHz), which is used by O2 and Vodafone for 2G/3G voice calls and SMS. It is compatible with O2, Vodafone, giffgaff (O2 network), Sky Mobile (O2 network), Tesco Mobile (O2), Lebara (Vodafone) and Lycamobile (O2). It does **not** work with EE or Three, which use different frequencies for voice. ### 3\. How many square metres does the G100 cover? The G100 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 a higher-coverage model or 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 G100 is UKCA / CE certified and operates within Ofcom's Technical Standard for Mobile Repeaters, 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 900 MHz (Band 8) 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. ### 6\. Why is the G100 so much cheaper than other boosters? The G100 costs £75.00 because it is a single-band (Band 8 only) voice-specific booster. It does not include the more expensive multi-band hardware needed for 4G/5G data boosters. By focusing on the single most important frequency for O2/Vodafone calls, Boost4U can offer it at a fraction of the price of multi-band units while delivering the same core call-quality improvement. ### 7\. Can multiple people use the boosted signal at the same time? Yes. The G100 supports unlimited simultaneous users and devices. There is no per-device cap — the whole household can make calls and send texts simultaneously. Call quality depends on the available mast capacity, not the booster itself. ### 8\. Will the G100 stop my calls from dropping? Yes, in most cases. Dropped calls are often caused by weak indoor signal causing the phone to lose connection with the mast. By amplifying the 900 MHz signal to a reliable level (typically 4–5 bars indoors), the G100 significantly reduces or eliminates dropped calls for O2 and Vodafone users. In our testing, dropped calls fell from 18% to under 2% after installation. ### 9\. What is the return policy and warranty? The G100 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 - [Best Mobile Signal Booster UK Under £100: Top 5 Compared (G100 Ranked #1 Budget)](https://www.ukmobilebooster.com/blogs/news/best-mobile-signal-booster-uk-under-100-top-5-compared-tested-2025) - [Boost4U G100 Review: Best Call Signal Booster Under £80?](https://www.ukmobilebooster.com/blogs/news/boost4u-g100-review-best-call-signal-booster-under-80-in-the-uk) - [How to Boost Mobile Phone Signal for Calls UK: 7 Proven Methods](https://www.ukmobilebooster.com/blogs/news/how-to-boost-mobile-phone-signal-for-calls-uk-7-proven-methods-2025) - [O2 Vodafone Signal Booster UK: Complete Guide for Calls & SMS](https://www.ukmobilebooster.com/blogs/news/o2-vodafone-signal-booster-uk-complete-guide-for-calls-sms-2025) Tags: Mobile Signal Booster for Calls UK O2 Vodafone mobile signal booster UK, phone call signal booster UK, Band 8 900MHz signal booster UK, giffgaff signal booster UK, Sky Mobile signal booster UK, cheap mobile signal booster UK, mobile phone call booster UK, voice signal booster UK best mobile signal booster for calls UK 2025, best cheap signal booster UK under £100, buy O2 signal booster UK, Vodafone call signal booster UK, giffgaff mobile signal booster UK, Sky Mobile signal booster UK, mobile signal booster for home UK cheap, 900MHz signal booster UK, phone call booster for cottage UK, mobile signal booster 100m2 UK, plug and play call booster UK, mobile signal booster free shipping UK, 365 day return signal booster UK, Lebara signal booster UK, Tesco Mobile call booster UK how to boost mobile phone signal for calls UK, why are my calls dropping at home UK, poor mobile signal for calls solution UK, do mobile signal boosters work for calls UK, are call signal boosters legal UK Ofcom, what is Band 8 900MHz UK, which networks use 900MHz for calls UK, how to improve O2 signal at home UK, how to improve Vodafone call quality UK, giffgaff poor signal at home solution, mobile signal booster how it works UK, mobile signal booster vs Wi-Fi Calling UK, will a 900MHz booster improve texts UK, how to install mobile signal booster UK, best position for outdoor antenna booster UK best mobile signal booster UK comparison, cheap vs expensive signal booster UK, Boost4U G100 review UK, mobile signal booster under £100 UK, O2 booster vs Vodafone booster UK, Band 8 vs Band 20 signal booster UK, call booster vs 4G data booster UK, mobile signal booster for home vs office UK, which booster works with O2 and Vodafone, top rated cheap signal booster UK 2025, mobile signal booster buyer guide UK, signal booster for listed building UK, mobile signal booster for basement UK, G100 vs C100 booster UK, mobile signal booster for small flat UK mobile signal booster for calls UK, O2 Vodafone signal booster, giffgaff Sky Mobile booster, Band 8 900MHz call booster, Boost4U G100 ## Details - **Price:** 75.0 GBP - 195.0 GBP - **Vendor:** UKMobileBooster.com - **Type:** United Kingdom - **Tags:** application Voice Calls, coverage Up to 100 sq metres, frequency 900MHz, gb gb, gb giffgaff, gb lebara, gb lycamobile, gb o2, gb sale, gb sky, gb talk, gb talktalk, gb tesco, gb vodafone, has_stock_countdown, provider giffgaff, provider Lebara, provider lycamobile, provider O2, provider Sky Mobile, provider Talk Mobile, provider talktalk, provider Tesco, provider Vodafone, sale, search list ## Variants | Variant | Price | Available | |---------|-------|-----------| | No / No / No | 75.00 GBP | In stock | | No / No / Yes | 95.00 GBP | In stock | | No / Yes / No | 125.00 GBP | In stock | | No / Yes / Yes | 145.00 GBP | In stock | | 20 M / No / No | 95.00 GBP | In stock | | 20 M / No / Yes | 115.00 GBP | In stock | | 20 M / Yes / No | 145.00 GBP | In stock | | 20 M / Yes / Yes | 165.00 GBP | In stock | | 30 M / No / No | 105.00 GBP | In stock | | 30 M / No / Yes | 125.00 GBP | In stock | | 30 M / Yes / No | 155.00 GBP | In stock | | 30 M / Yes / Yes | 175.00 GBP | In stock | | 40 M / No / No | 115.00 GBP | In stock | | 40 M / No / Yes | 135.00 GBP | In stock | | 40 M / Yes / No | 165.00 GBP | In stock | | 40 M / Yes / Yes | 185.00 GBP | In stock | | 50 M / No / No | 125.00 GBP | In stock | | 50 M / No / Yes | 145.00 GBP | In stock | | 50 M / Yes / No | 175.00 GBP | In stock | | 50 M / Yes / Yes | 195.00 GBP | In stock | ## Images - A mobile signal booster kit including a box, indoor antenna, outdoor antenna, cables, and a power adapter. Mobile Signal Booster for Calls UK | Boost4U G100 - Man sitting on a couch using a smartphone with a blurred outdoor background UK Mobile Phone Signal Booster Improve Signal - Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks - Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks - Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks - Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks Whip Antenna Improved Signal Up to 5 Bars - Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks How Whip Antenna Works - Mobile Signal Booster O2 Booster Vodafone Signal Booster Giffgaff Signal Booster Indoor Coverage 100m2 Coverage Voice Calls UK Mobile Networks How it Works --- > Source: [B4U](https://www.ukmobilebooster.com/products/g100-mobile-booster) > Updated: 2026-09-02