# Calls - 100m2 (Vivo/Sercomtel) Cell Phone Signal Booster ##### **Enhanced Signal Strength** Our Calls - 100m2 booster amplifies both 2G and 3G/4G LTE signals across 850MHz and 1800MHz frequencies, ensuring you enjoy seamless voice calls and text messages. Compatible with major Brazilian mobile networks including Vivo and Sercomtel, this dual-band device guarantees optimal coverage for all your communication needs. ##### **Wide Coverage Area** With an impressive coverage of up to 100 square meters, this booster is perfect for small apartments or offices. It effectively enhances indoor signal strength, so you can stay connected no matter where you are inside your home or workspace. ##### **Support for Multiple Users** Connect up to 10 devices simultaneously without sacrificing performance. Ideal for households with multiple users across different mobile networks, this booster ensures everyone in the family can enjoy clear calls and reliable data connections. ##### **Clear Voice Quality** Say goodbye to dropped calls and static noise! Our signal booster makes your conversations crystal clear, allowing you to communicate effortlessly. Experience improved voice clarity even in challenging signal conditions. ##### **Improved Battery Life** By boosting your signal, our device enhances your phone’s battery efficiency. With a stronger connection, your phone consumes less energy, leading to extended battery life and fewer interruptions during critical moments. ##### **Easy Installation Kit** The complete kit includes all necessary components—external aerial, cables, booster unit, indoor antenna, and power adapter—making installation a breeze. Enjoy improved signal strength right out of the box, with everything You need included. It boost **Calls and 3G and 4G LTE** signal on 850MHz, 1800MHz frequency, the frequencies used in **Brazil** used by mobile networks to deliver their mobile services: 2G. It work on both 850Mhz (Band 5) & 1800MHz (Band 3) frequencies mainly used for improving Vivo and Sercomtel mobile carrier networks **Voice Calls & Text** signal. It also boost Sercomtel mobile carrier for improving **3G** signal, and boost Vivo, TIM, Claro, Oi, Nextel and Algar mobile carriers for improving **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, Texts and 3G**. Boost indoor signal cover an area up to **100 m2**, is ideal for small apartments or offices. 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 and 3G 850MHz, and 2G and 4G LTE 1800MHz (Band 5/3) network signal. This system will provide coverage on both 850MHz, 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/3G/4G Calls** Eliminates Dropped Calls **Battery Life** Get Longer On Your Phone **Send/Receive SMS** SMS Text Messages Quickly **Consistent Connection** Reliable 3G/4G Data **Seamless Switching** Back to Normal Network **3G/4G Internet** Faster Uploads & Downloads **Multiple Users** 10 Simultaneously **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 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 \[Voice Calls\] (Band 5, 3) Country Brazil **Boost All On** Vivo (2G & 4G) TIM (4G) Claro (4G) Oi (4G) Nextel (4G) Algar (4G) Sercomtel (3G) Users Supporting 10 Simultaneously Band Dual Band 5 & 3 Frequency 850MHz & 1800MHz Gain(dB) Uplink Gp≥45; Downlink Gp≥50 Up-link 824~849 MHz; 1710~1785 MHz Down-link 869~894 MHz: 1805~1880 MHz Export Power(Po) ≥10dBm 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 5, 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 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 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 does a cell phone signal booster do? - A cell phone signal booster helps improve weak mobile signals. It makes your calls clearer, helps you send and receive texts faster, and boosts 3G and 4G data for better internet browsing. Imagine getting a stronger phone signal at home so you can talk without interruptions and enjoy fast internet! 2. How much area does the 100m2 booster cover? - The 100m2 cell phone signal booster can cover up to 100 square meters. This is great for small apartments or offices. If you need better signal in a bigger place, you might want to look for a booster that covers a larger area! 3. How do I check if my phone supports 4G calling? - To see if your phone supports 4G calling, you can dial \*3001#12345#\* and press the call button. Then, look for 'Freq Band Indicator' in the 'Serving Cell Info' section. This shows if your phone can use 4G for clearer voice calls. 4. Can this booster work for any mobile network? - This booster is mainly designed for Vivo and Sercomtel networks. However, it also supports other networks like TIM, Claro, Oi, Nextel, and Algar for 4G. If you have a 2G or 3G phone, it will help boost those signals too! 5. Do I need to install the booster myself? - Yes, installing the booster is fairly simple as it comes with everything you need: the booster unit, outside and inside antennas, cables, and a power adapter. You can follow the included instructions to set it up. 6. What is the difference between 2G, 3G, and 4G signals? - 2G, 3G, and 4G represent different generations of mobile network technology. 2G is mainly for voice and text messaging, 3G allows for faster internet browsing, and 4G is even faster, making video calls and streaming possible! A good booster can improve all these signals. 7. Will the booster work if there is no signal outside? - No, the booster needs a signal outside to work. If there's no signal coming from the cell towers outside, the booster cannot create a signal. It only makes weak signals stronger. 8. Can multiple phones use the booster at the same time? - Yes! The 100m2 booster can support up to 10 users at the same time. So, if you have family members or friends using their phones in the same area, everyone can enjoy better signal strength. 9. What should I do if I still have weak signal after using the booster? - If you're still experiencing weak signal, you might need to upgrade the external aerial to a higher gain model, especially if your outside signal is weak. This can help ensure that the booster gets a stronger signal to amplify. 10. Is the booster safe for my devices? - Absolutely! The booster is designed to be safe for your devices. It improves the mobile signal, which means your phone will use less battery, and you'll have clearer calls. It's a friendly and safe solution for better communication! TAGES: cell phone signal booster, 3G 4G LTE booster, Vivo Sercomtel signal enhancement, mobile signal amplifier, indoor signal coverage, dual band booster, improve voice calls, signal booster installation ## Details - **Price:** 185.99 GBP - 305.99 GBP - **Vendor:** UKMobileBooster.com - **Type:** Brazil - **Tags:** application Voice Calls, br br, coverage Up to 100 sq metres, frequency 850 1800MHz, provider Sercomtel, provider Vivo ## Variants | Variant | Price | Available | |---------|-------|-----------| | No / No / No | 185.99 GBP | In stock | | No / No / Yes | 205.99 GBP | In stock | | No / Yes / No | 235.99 GBP | In stock | | No / Yes / Yes | 255.99 GBP | In stock | | 20 M / No / No | 205.99 GBP | In stock | | 20 M / No / Yes | 225.99 GBP | In stock | | 20 M / Yes / No | 255.99 GBP | In stock | | 20 M / Yes / Yes | 275.99 GBP | In stock | | 30 M / No / No | 215.99 GBP | In stock | | 30 M / No / Yes | 235.99 GBP | In stock | | 30 M / Yes / No | 265.99 GBP | In stock | | 30 M / Yes / Yes | 285.99 GBP | In stock | | 40 M / No / No | 225.99 GBP | In stock | | 40 M / No / Yes | 245.99 GBP | In stock | | 40 M / Yes / No | 275.99 GBP | In stock | | 40 M / Yes / Yes | 295.99 GBP | In stock | | 50 M / No / No | 235.99 GBP | In stock | | 50 M / No / Yes | 255.99 GBP | In stock | | 50 M / Yes / No | 285.99 GBP | In stock | | 50 M / Yes / Yes | 305.99 GBP | In stock | ## Images - Calls - 100m2 (Vivo/Sercomtel) Cell Phone Signal Booster - Calls - 100m2 (Vivo/Sercomtel) Cell Phone Signal Booster - Calls - 100m2 (Vivo/Sercomtel) Cell Phone Signal Booster - Calls - 100m2 (Vivo/Sercomtel) Cell Phone Signal Booster - Calls - 100m2 (Vivo/Sercomtel) Cell Phone Signal Booster - Calls - 100m2 (Vivo/Sercomtel) Cell Phone Signal Booster - Calls - 100m2 (Vivo/Sercomtel) Cell Phone Signal Booster - Calls - 100m2 (Vivo/Sercomtel) Cell Phone Signal Booster - Calls - 100m2 (Vivo/Sercomtel) Cell Phone Signal Booster - Calls - 100m2 (Vivo/Sercomtel) Cell Phone Signal Booster --- > Source: [B4U](https://www.ukmobilebooster.com/products/br-td100-mobile-booster) > Updated: 2026-09-02