3G & Calls - 250m2 (Oi/Algar) Cell Phone Signal Booster
Elevate Your Signal Strength
Experience improved connectivity with the 3G & Calls cell phone signal booster, designed for 900MHz and 2100MHz frequencies. This dual-band amplifier effectively enhances Oi and Algar mobile services, ensuring consistent call quality and 3G data access. Ideal for spaces up to 250 m², including homes and businesses, you can rely on clearer connections without the hassles of dropped calls.
All-In-One Installation Kit
Included in your purchase is a comprehensive kit featuring everything you need for quick installation. From external and internal antennas to the booster unit and necessary cables, it ensures maximum performance at a single price. You won't have to buy additional components, making this booster an economical choice for enhancing your mobile signal.
Wide Coverage for Multiple Users
Designed to support up to 25 simultaneous users, this booster is perfect for families or small businesses. No more fighting over signal; everyone can enjoy reliable 3G, voice calls, and text messaging, ensuring everyone stays connected without interruption. The wider coverage capability ensures that no corner of your space is left in the dark.
Perfect for Urban and Rural Areas
Whether you're in a busy urban environment or a rural area, this booster offers exceptional performance for both 2G and 3G networks. Its ability to amplify signals ensures that you can stay connected, no matter where you are. Take advantage of uninterrupted services for important calls and swift data uploads and downloads.
Easy Band Check Feature
Know exactly which frequency band your mobile device operates on with the convenient Band Checker functionality. This simple feature enables you to confirm whether your device works on Band 8 or Band 1, allowing for optimal setup and performance of the booster.
Enhance Your Setup with Upgrades
Customize your booster experience with optional upgrades. Opt for a higher gain Yagi antenna for enhanced signal reception or a lightning surge protector to safeguard your system from electrical surges. These upgrades elevate the performance and reliability of your signal booster, ensuring a robust and resilient setup.
It boost 3G and Calls signal on 900MHz, 2100MHz frequencies, the frequencies 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) and 2G. It work on both 900Mhz (Band 8) & 2100Mhz (Band 1) frequencies mainly used for improving Oi and Algar mobile carrier networks 3G, Voice Calls and Text signal. 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 3G 2100MHz (Band 8/1) network signal.
This system is compatible with all 3G mobile phone networks, will provide coverage on both 900MHz, 2100MHz frequency simultaneously. It's Dual Band booster and is an ESSENTIAL if many people in the same household are on different mobile phone networks!
Eliminates Dropped Calls
Clear Voice
No Miss Important Calls
Reliable 3G Data
Send/Receive SMS
SMS Text Messages Quickly
Faster Uploads & Downloads
Signal Wider Coverage
Reception Up to 250 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.
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

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.
Specification
Application & Bands | [3G Data and Voice Calls] (Band 8, 1) |
Country | Brazil |
Boost All On | Oi (3G & 2G) Algar (3G & 2G) |
Users Supporting | 25 Simultaneously |
Band | Dual Band 8 & 1 |
Frequency | 900 & 2100MHz |
Gain(dB) | Uplink Gp≥50; Downlink Gp≥55 |
Up-link | 890~915 MHz; 1930~1990 MHz |
Down-link | 935~960 MHz; 2110~2180 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 |
Expandable coverage by adding a second indoor antenna if the outside signal is strong.

2 Indoor Antennas

3 Indoor Antennas

4 Indoor Antennas

10 Indoor Antennas
Custom your solution:
2 Way Splitter | 3 Way Splitter | 4 Way Splitter | Indoor Cable | Indoor Antenna
How It Works

1
The powerful antenna reaches out to access a voice and 3G, 4G, and LTE data signal, and delivers it to the booster
2
The booster receives the signal, amplifies it, and serves as a relay between your phone and the nearest cell tower.
3
Your devices get increased cell reception, and calls and data are fed through the booster back to the network.
Get stronger signal

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

Application Scenarios

Home

Office

Garage

Metal Buildings
- What is a cell phone signal booster? - A cell phone signal booster is a device that helps improve your mobile phone signal. It takes weak signals from outside and makes them stronger inside your home or building. This way, you can make calls, send texts, and use the internet more easily, even in areas where the signal is not very good.
- How does the 3G & Calls - 250m2 booster work? - The 3G & Calls - 250m2 booster works by capturing weak cell signals from outside and amplifying them to provide better coverage inside. It supports both 900MHz and 2100MHz frequencies typically used by mobile networks in Brazil, like Oi and Algar. This means you can enjoy clearer calls and faster internet.
- Who can use this booster? - This booster is great for anyone who needs better mobile coverage, especially in medium-sized spaces like homes, cafes, or small businesses. It can support up to 25 users at once, so it's perfect for families or friends who are all using different mobile networks.
- Will this booster work if there is no signal outside? - No, the booster requires some signal from outside to amplify. If you have no signal at all outside, it will not be able to create one inside. You need some level of reception for the booster to work effectively.
- Is it difficult to install the booster? - Not at all! The 3G & Calls booster kit comes with everything you need for installation, including the outdoor antenna, indoor antenna, cables, and power adapter. Plus, it’s designed to be easy to set up, so you don’t need to be a tech expert to get it working.
- What is the coverage area of this booster? - This signal booster can enhance cell phone signals within an area of up to 250 square meters. This means it’s suitable for places like your home, a small restaurant, or a cafe, letting everyone enjoy better signals.
- How do I check what frequency band my phone uses? - You can check your phone’s frequency band by dialing *3001#12345#* on your iPhone and pressing the call button. Then, click on 'Serving Cell Info' to see the 'Freq Band Indicator'. It will show you if it's Band 8 or Band 1.
- What happens if I need a longer cable for installation? - If the standard 10-meter cable isn’t enough for your installation, you can choose to upgrade to a longer external cable. This will help you place the antenna in a location where it can get a stronger signal.
- How can I protect my booster from lightning? - You can add a Lightning Surge Protector to your installation. This device protects the booster from surges caused by nearby lightning strikes, ensuring your equipment stays safe and works properly.
- What types of mobile services does this booster support? - The 3G & Calls booster supports various mobile services including voice calls, SMS texting, and 3G internet data for Oi and Algar networks. This means you'll have a consistent and reliable connection for all your mobile needs.
