# 4G LTE & Calls - 250m2 (TIM/Claro/Oi/Algar) Cell Phone Signal Booster ##### **Enhanced 4G LTE & Calls** Experience crystal clear voice calls and fast 4G LTE data with our booster. Designed to amplify signals on 900MHz and 1800MHz frequencies, this device ensures stable connections for your TIM, Claro, Oi, and Algar networks, allowing you to enjoy seamless communication anywhere within a 250m² area. ##### **Plug and Play Installation** Our signal booster kit comes with all the necessary components for a quick and easy setup. Featuring external and internal antennas, cables, and a power adapter, you can elevate your cellular connection without the need for professional installation. Get connected in no time! ##### **Dual Band Coverage** With dual band capabilities, this booster works effortlessly across both 900MHz and 1800MHz frequencies, ensuring that users on different mobile networks can enjoy amplified signals simultaneously. Perfect for multi-user households where varied network providers are in play. ##### **Wider Reception Area** Maximize your cellular coverage with our powerful booster designed for spaces up to 250m². Whether in your home, a café, or a restaurant, enjoy reliable service throughout the area, allowing you and your guests to stay connected with fewer interruptions. ##### **Improved Battery Life** By boosting your phone's connectivity, our signal enhancer reduces the strain on your device's battery. Enjoy longer conversations and extended usage without the need to constantly recharge, allowing for uninterrupted communication during your daily activities. ##### **Tested Performance Upgrades** Opt for our upgraded external aerial and cables based on your signal strength for enhanced performance. Improved reception ensures that even the most remote areas maintain a strong connection, turning device frustration into seamless communication. It boost **4G LTE and Calls** signal on 900MHz, 1800MHz frequencies, the frequencies used in **Brazil** used by mobile networks to deliver their mobile services: 2G (also known as GSM) and 4G. It work on both 900Mhz (Band 8) & 1800Mhz (Band 3) frequencies mainly used for improving TIM, Claro, Oi and Algar mobile carrier **Voice Calls, Text 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 voice calls and text**. It is the best suitable for medium size, boost indoor signal areas up to **250 m2**, perfect for home, cafes, restaurants, pubs, clubs and more. The booster enhances cell signals is a low-cost amplifier that wirelessly enhances cell signals for cellular devices (smartphones, tablets, Kindle, etc). It provides stronger signals, longer battery life, and clear connections to your phone. This device will boost mobile providers' 2G 900MHz, and 2G and 4G LTE 1800MHz (Band 8/3) network signal. This system is compatible with all GSM mobile phone networks, will provide coverage on both 900MHz, 1800MHz frequency **simultaneously**. It's Dual Band booster and is an **ESSENTIAL** if many people in the same household are on different mobile phone networks! * * * **Clear Voice** No Miss Important Calls **Wow 2G/4G Calls** Eliminates Dropped Calls **Send/Receive SMS** SMS Text Messages Quickly **Consistent Connection** Reliable 4G/LTE Data **Signal Wider Coverage** Reception Up to 250 sq.m. **4G/LTE Internet** Faster Uploads & Downloads * * * ### 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 \[4G/LTE & Calls\] (Band 8/3) Country Brazil **Boost All On** TIM (4G & 2G) Claro (4G & 2G) Oi (4G & 2G) Algar (4G & 2G) Nextel (4G) Vivo (4G) Users Supporting 25 Simultaneously Band Dual Band 8 & 3 Frequency 900 & 1800MHz Gain(dB) Uplink Gp≥50; Downlink Gp≥55 Up-link 890~915 MHz; 1710~1785 MHz Down-link 935~960 MHz; 1805~1880 MHz Export Power(Po) \-70~-40 dBm/FA(1.23MHz) 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, or Band 3, 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 a cell phone signal booster? - A cell phone signal booster is a device that helps improve the strength of your phone's signal. It makes it easier for your smartphone, tablet, or other devices to connect to the mobile network, so you can make calls and use the internet without interruptions. 2. How does the 4G LTE & Calls booster work? - This booster works by receiving weak signals from outside and amplifying them inside your home or office. It makes sure you have clear voice calls and fast internet even in areas where the signal is usually weak. 3. Which mobile networks are supported? - The booster supports major Brazilian mobile networks such as TIM, Claro, Oi, and Algar. This means it will work well no matter which of these providers you use. 4. How big of an area does this booster cover? - This booster can effectively cover an area of up to 250 square meters. This is perfect for medium-sized homes, cafes, restaurants, and clubs, providing better signal strength to everyone in that space. 5. Can I use the booster for both calls and internet? - Yes! The cell phone signal booster enhances both voice calls and 4G LTE internet signals. So, you can talk on the phone and browse the internet at the same time without any problems. 6. What do I do if I have a weak signal outside? - Remember, the signal booster cannot create a signal; it can only make a weak signal stronger. If the signal outside is too weak, the booster might not work effectively. You may need to locate it where the signal is better. 7. Is it easy to install? - Yes! The kit comes with everything you need for installation, including antennas and cables. You can set it up yourself without needing special tools or knowledge. 8. What do I do if I have multiple mobile networks at home? - This dual-band booster is a great solution for homes where different family members use different mobile networks. It will improve coverage for all users simultaneously. 9. Can I upgrade the equipment? - Absolutely! You can upgrade to a stronger antenna or longer cables if you need to cover a larger area or if your signal is still weak inside. These upgrades help improve performance. 10. How do I check if my phone is compatible? - You can check if your phone is compatible by dialing \*3001#12345#\* on your iPhone and looking for the Frequency Band Indicator. Alternatively, apps like CellMapper can also help you check your phone's band. TAGES: 4G LTE signal booster, cell phone signal booster, Brazil mobile networks, TIM Claro Oi Algar, improve voice calls, GSM amplifier, dual band booster, indoor signal enhancement ## Details - **Price:** 235.0 GBP - 355.0 GBP - **Vendor:** UKMobileBooster.com - **Type:** Brazil - **Tags:** application 4G LTE Data & Voice Calls, br br, coverage up to 250 sq metres, has_stock_countdown, provider Algar, provider Claro, provider Oi, provider TIM ## Variants | Variant | Price | Available | |---------|-------|-----------| | No / No / No | 235.00 GBP | In stock | | No / No / Yes | 255.00 GBP | In stock | | No / Yes / No | 285.00 GBP | In stock | | No / Yes / Yes | 305.00 GBP | In stock | | 20 M / No / No | 255.00 GBP | In stock | | 20 M / No / Yes | 275.00 GBP | In stock | | 20 M / Yes / No | 305.00 GBP | In stock | | 20 M / Yes / Yes | 325.00 GBP | In stock | | 30 M / No / No | 265.00 GBP | In stock | | 30 M / No / Yes | 285.00 GBP | In stock | | 30 M / Yes / No | 315.00 GBP | In stock | | 30 M / Yes / Yes | 335.00 GBP | In stock | | 40 M / No / No | 275.00 GBP | In stock | | 40 M / No / Yes | 295.00 GBP | In stock | | 40 M / Yes / No | 325.00 GBP | In stock | | 40 M / Yes / Yes | 345.00 GBP | In stock | | 50 M / No / No | 285.00 GBP | In stock | | 50 M / No / Yes | 305.00 GBP | In stock | | 50 M / Yes / No | 335.00 GBP | In stock | | 50 M / Yes / Yes | 355.00 GBP | In stock | ## Images - 4G LTE & Calls - 250m2 (TIM/Claro/Oi/Algar) Cell Phone Signal Booster - 4G LTE & Calls - 250m2 (TIM/Claro/Oi/Algar) Cell Phone Signal Booster - 4G LTE & Calls - 250m2 (TIM/Claro/Oi/Algar) Cell Phone Signal Booster - 4G LTE & Calls - 250m2 (TIM/Claro/Oi/Algar) Cell Phone Signal Booster - 4G LTE & Calls - 250m2 (TIM/Claro/Oi/Algar) Cell Phone Signal Booster - 4G LTE & Calls - 250m2 (TIM/Claro/Oi/Algar) Cell Phone Signal Booster - 4G LTE & Calls - 250m2 (TIM/Claro/Oi/Algar) Cell Phone Signal Booster - 4G LTE & Calls - 250m2 (TIM/Claro/Oi/Algar) Cell Phone Signal Booster - 4G LTE & Calls - 250m2 (TIM/Claro/Oi/Algar) Cell Phone Signal Booster - 4G LTE & Calls - 250m2 (TIM/Claro/Oi/Algar) Cell Phone Signal Booster --- > Source: [B4U](https://www.ukmobilebooster.com/products/br-gd250-mobile-booster) > Updated: 2026-09-02