# 3G - 300m2 (Oi/Algar) Cell Phone Signal Booster ##### **Powerful 3G Boosting** Experience optimal connectivity with our 3G - 300m2 Cell Phone Signal Booster. Designed to amplify the 2100MHz frequency utilized by leading Brazilian networks like Oi and Algar, it ensures you can enjoy crystal-clear calls and reliable data in areas up to 300 square meters. ##### **Easy Installation Package** This booster kit provides everything you need for a smooth installation process. Complete with an outdoor antenna, indoor antenna, cables, and a power adapter, you can set up your system effortlessly without the need for professional help. ##### **Enhanced Coverage** Transform your spaces into strong signal zones! With a coverage area of up to 300m2, this booster is perfect for homes, offices, cafes, and restaurants, ensuring that every corner is filled with uninterrupted connectivity. ##### **Support for Multiple Users** Connect up to 30 devices simultaneously without compromising on performance. Whether it’s family members at home or guests at a venue, everyone can enjoy accelerated browsing and quality calls with our powerful booster. ##### **Upgrade Options for Peak Performance** Take your signal strength to new heights with optional upgrades for higher gain antennas or extended cables. Tailor your booster to your settings for optimal signal reception even in challenging conditions. ##### **Reliable Performance Guaranteed** Enjoy consistent performance with a gain of up to 65 dB. Our 3G signal booster is not just an amplifier; it’s built to deliver stable connections and eliminate dropped calls, giving you peace of mind wherever you are. It boost **3G** signal on 2100MHz frequency, the frequency used in **Brazil** used by mobile networks to deliver their mobile services: 3G, 3.5G (also known as HSDPA provides faster data rates than 3G). It work on 2100Mhz (Band 1) frequency can boost Oi and Algar mobile carriers mainly used for improving **3G** signal. It suitable for medium size, boost indoor signal areas up to **300 m2**, perfect for home, cafes, restaurants, pubs, clubs and more. * * * **Wow 3G Calls** Eliminates Dropped Calls **Consistent Connection** Reliable 3G Data **Signal Wider Coverage** Reception Up to 300 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 UK Networks EE Vodafone O2 Indoor Coverage Improve Signal 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) ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal 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. ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal surge protector](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/ProductPageSurgeProtector.webp?v=1600640184) * * * ### Specification (scroll to view all) Application & Bands \[3G\] (Band 1) Country Brazil **Boost All On** Oi (3G) Algar (3G) Users Supporting 30 Simultaneously Band Single Band 1 Frequency 2100MHz Gain(dB) Uplink Gp≥60; Downlink Gp≥65 Up-link 1930~1990 MHz Down-link 2110~2180 MHz Export Power(Po) ≥17dBm Power Adapter Input: AC 100V~240V 50/60Hz Output: DC 5V Kit Includes 1 x Booster 1 x Outdoor Antenna 1 x Indoor Antenna 1 x 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 3 Indoor Antennas](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/Expand-Cell-Coverage-with-3-Indoor-Antenna.png?v=1700361963) ### **How It Works** ![how 4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal 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 4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal 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 4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal 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) ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal signal coverage](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/Coverage.jpg?v=1698191834) ### **Application Scenarios** ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal home application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-home.png?v=1697980834) **Home** ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal office application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-office.png?v=1697980832) **Office** ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal garage application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-garage.png?v=1697980834) **Garage** ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal metal buildings application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-metal-buildings.png?v=1697980834) **Metal Buildings** 1. What is the 3G - 300m2 Cell Phone Signal Booster? - The 3G - 300m2 Cell Phone Signal Booster is a device designed to enhance your 3G mobile phone signal. It works specifically on the 2100MHz frequency, which is used in Brazil by providers like Oi and Algar. This booster increases signal strength in areas up to 300 square meters, making it suitable for homes, cafes, restaurants, and clubs. With this device, you'll experience fewer dropped calls and a more reliable connection. 2. How does the cell phone signal booster work? - This booster works by capturing weak signals from outside and amplifying them so you get a much stronger signal inside your building. It cannot create a signal if there is none available outside, but it can help improve the signal quality significantly if there's at least a little signal to start with. Think of it like a megaphone for your phone's signal! 3. How do I know if this booster will work for my phone? - To check if the booster works with your phone, you can find your phone's frequency band. For iPhones, you can dial \*3001#12345#\* and go to 'Serving Cell Info' to find the 'Freq Band Indicator'. It should show Band 1, which is what this booster amplifies. Alternatively, you can use apps like "CellMapper" or "Network Signal Info Pro" to verify the bands. 4. What comes in the booster kit? - When you purchase the 3G - 300m2 Cell Phone Signal Booster, you get everything you need for installation. This includes the booster unit, an outdoor antenna, an indoor antenna, a power adapter, and a 10-meter outdoor cable. This means you have all the parts to help improve your signal right from the start! 5. How can I install the 3G signal booster? - Installing the booster is quite straightforward! First, do a loose installation to find the best spots for your cables and antennas. Place the outdoor antenna in a spot with good signal, usually on your roof. Connect it to the booster inside using the supplied cable. Finally, connect the indoor antenna and plug in the power supply to complete the setup! 6. Can I upgrade my outdoor equipment for better performance? - Yes, you can upgrade the outdoor equipment. If the standard outdoor antenna isn't working well for you, you can opt for a higher-gain Yagi antenna. This upgrade is useful if you notice that your phone has only 1 or 2 signal bars. Just make sure your outdoor signal is strong enough to benefit from this upgrade! 7. What if I need a longer outdoor cable? - If a 10-meter outdoor cable isn't enough for your installation, you can opt to upgrade to longer cables. You can choose from different lengths like 20m, 30m, 40m, or 50m. This allows you to set up your booster in the best location possible without being limited by cable length. 8. How do I protect my equipment from lightning? - To protect your signal booster from lightning strikes, you can add a lightning surge protector to your setup. This device is designed to safeguard your equipment from high amperage surges that can occur during storms. It's simple to install and a smart choice if you live in an area prone to lightning. 9. Is the booster safe to use? - Yes, the 3G - 300m2 Cell Phone Signal Booster is safe to use. It meets all the necessary safety standards and regulations. It simply amplifies the existing signals to provide you with better reception, which makes it an eco-friendly way to improve your mobile connectivity. 10. Who can I contact if I have more questions? - If you have any additional questions or need assistance, you can easily reach out through the contact form on the UK Mobile Booster website. They offer support to ensure you have the best experience possible with your booster. TAGES: 3G signal booster, cell phone signal booster, Oi Algar booster, indoor signal booster, mobile reception amplifier, 300m2 coverage, mobile network enhancement, 2100MHz frequency ## Details - **Price:** 183.82 GBP - 303.82 GBP - **Vendor:** UKMobileBooster.com - **Type:** Brazil - **Tags:** application 3G Data, br br, coverage up to 300 sq metres, has_stock_countdown, provider Algar, provider Oi ## Variants | Variant | Price | Available | |---------|-------|-----------| | No / No / No | 183.82 GBP | In stock | | No / No / Yes | 203.82 GBP | In stock | | No / Yes / No | 233.82 GBP | In stock | | No / Yes / Yes | 253.82 GBP | In stock | | 20 M / No / No | 203.82 GBP | In stock | | 20 M / No / Yes | 223.82 GBP | In stock | | 20 M / Yes / No | 253.82 GBP | In stock | | 20 M / Yes / Yes | 273.82 GBP | In stock | | 30 M / No / No | 213.82 GBP | In stock | | 30 M / No / Yes | 233.82 GBP | In stock | | 30 M / Yes / No | 263.82 GBP | In stock | | 30 M / Yes / Yes | 283.82 GBP | In stock | | 40 M / No / No | 223.82 GBP | In stock | | 40 M / No / Yes | 243.82 GBP | In stock | | 40 M / Yes / No | 273.82 GBP | In stock | | 40 M / Yes / Yes | 293.82 GBP | In stock | | 50 M / No / No | 233.82 GBP | In stock | | 50 M / No / Yes | 253.82 GBP | In stock | | 50 M / Yes / No | 283.82 GBP | In stock | | 50 M / Yes / Yes | 303.82 GBP | In stock | ## Images - 3G - 300m2 (Oi/Algar) Cell Phone Signal Booster - 3G - 300m2 (Oi/Algar) Cell Phone Signal Booster - 3G - 300m2 (Oi/Algar) Cell Phone Signal Booster - 3G - 300m2 (Oi/Algar) Cell Phone Signal Booster - 3G - 300m2 (Oi/Algar) Cell Phone Signal Booster - 3G - 300m2 (Oi/Algar) Cell Phone Signal Booster - 3G - 300m2 (Oi/Algar) Cell Phone Signal Booster - 3G - 300m2 (Oi/Algar) Cell Phone Signal Booster - 3G - 300m2 (Oi/Algar) Cell Phone Signal Booster --- > Source: [B4U](https://www.ukmobilebooster.com/products/br-w300-mobile-booster) > Updated: 2026-09-02