# 4G LTE & Calls - Car Vehicle Caravan (Three 3) Mobile Signal Booster
##### **Convenient Design**
The compact and stylish design of our 4G LTE & Calls booster is ideal for small spaces. Its portable size, resembling a cigarette box, makes it easy to carry and deploy in any vehicle, ensuring enhanced signal coverage wherever you go.
##### **Effortless Installation**
Say goodbye to complex setups! This signal booster is designed for hassle-free installation, allowing you to quickly enhance your mobile connectivity without the need for any technical expertise. Just plug it in and experience improved reception in no time!
##### **Automatic Gain Control**
Our advanced auto gain technology adjusts the booster’s performance based on external signal strength. This means you’ll always receive the best possible signal amplification, ensuring a reliable connection for both calls and data.
##### **Versatile Power Options**
With customizable power adapter options, including 220VAC, mobile power, and vehicle power adapters, this booster is ready to perform in any situation. Whether you're on the road or at home, you can choose the power source that works for you.
##### **Reduced Radiation Exposure**
Enjoy the benefits of improved signal strength while minimizing your exposure to mobile phone radiation. A strong signal means your phone doesn’t have to work as hard, resulting in lower radiation intensity and enhanced safety for you and your passengers.
##### **Eco-Friendly Operation**
Our signal booster is designed with environmental consciousness in mind. When not in use, simply unplug it to eliminate unnecessary radiation, making it easy for you to stay connected while being respectful of the planet.
It boost **4G LTE and Calls** signal on 1800MHz frequency, the frequency used in **Indonesia** used by mobile networks to deliver their mobile services: 2G (also known as GSM) and 4G. It work on 1800Mhz (Band 3) frequency for improving Three (3) mobile carrier networks **Voice Calls, Text and 4G LTE** signal.
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**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**
Vehicle Signal Improved
**4G/LTE Internet**
Faster Uploads & Downloads
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### Upgrade External Aerial
External fishtail aerial connects via 3 meter coax lead to the signal booster unit which is located inside the car. The aerial with **Three** magnets, its more stable.
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### Features
**1\. Convenient**\--- small beautiful appearance (cigarette box size), easy to carry, suitable for a variety of small space signal coverage.
**2\. Easy to use**\--- needs no complicated installation.
**3\. Open**\--- according to the external signal strength, automatic gain control ensure the signal.
**4\. Flexible**\---- can choose different power adapters, such as 220VAC adapter, mobile power, vehicle power adapter etc.
**5\. Low radiation**\--- a good signal coverage can reduce the radiation intensity of the mobile phone itself, effectively reduce the mobile phone radiation may harm the human body.
**6\. Environmental protection**\--- when you do not need to use the telephone or the Internet, can be removed at any time or unplug the power, elimination of radiation.
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### Specification
| | |
| --- | --- |
| Application & Bands | \[Car, Vehicle 4G/LTE & Voice Calls\] (Band 3) |
| Country | Indonesia |
| **Boost All On** | Three 3 (4G & 2G) |
| Users Supporting | 10 Simultaneously |
| Band | Single Band 3 |
| Frequency | 1800MHz |
| Gain(dB) | Uplink 10; Downlink 10 |
| Up-link | 1710~1785 MHz |
| Down-link | 1805~1880 MHz |
| Export Power(Po) | ≥27dBm |
| Power Adapter | 5V DC |
| Kit Includes | 1 x Car Signal Booster/Amplifier
1 x External Magnetic-Mount Aerial
1 x 5V DC Car Power Adapter
1 x Easy to Follow Installation Manual |
**Warming Tips:**
- Band Confirmation: This booster can boost signals on 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.
### **How It Works**
#### 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.
1. Outside Antenna: Pulls in tower Signal.
2. Signal Booster: Amplifies the Signal.
3. Inside Antenna: Re-broadcasts Signal.
4. Mobile Phone: Gets Boosted Signal.
#### **Installation**
1. Mount external aerial on top back.
2. Install the booster and interior antenna.
3. External aerial connect to "BS" on the booster, and interior antenna connect to "MS".
**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)
### **Application Scenarios**
1. What does a mobile signal booster do? - A mobile signal booster helps improve the strength of your phone signal by amplifying the existing signal from the outside. It makes calls clearer and allows for better texting and internet browsing while in your vehicle.
2. Where can I use the 4G LTE signal booster? - You can use the 4G LTE signal booster in your car, caravan, or any vehicle. It works to enhance your mobile signal while you are on the move!
3. Will the booster work if there is no signal outside? - Unfortunately, if there is no mobile signal outside your vehicle, the booster will not work. It needs some level of existing signal to amplify.
4. How do I install the mobile signal booster? - The installation is very easy! The kit includes everything you need. Just follow the easy-to-read manual, and you can set it up in no time without needing any special tools.
5. Can I connect multiple devices to the signal booster? - Yes! The signal booster can support up to 10 devices at the same time, so you and your family or friends can all enjoy a strong signal in the car.
6. Is the mobile signal booster safe to use? - Yes, the mobile signal booster is designed with low radiation and is safe to use. It can actually help reduce your phone's radiation when the signal is stronger.
7. How do I check if my phone is using the right frequency band? - To check if your phone is on the correct frequency band, dial \*3001#12345#\* on your iPhone, press Call, then check the 'Freq Band Indicator' under 'Serving Cell Info'.
8. What if I want to remove the booster later? - You can easily remove the booster whenever you want. If you don’t need it for a while, just unplug it to save energy and eliminate any radiation.
9. What do I do if I have problems with my signal booster? - If you encounter any issues with the signal booster, check the installation and make sure all connections are secure. If problems persist, refer to the manual or contact customer support for assistance.
10. Can I use the booster for both calls and data? - Absolutely! The signal booster improves both voice calls and 4G LTE data, providing faster uploads and downloads along with clearer voice quality.
TAGES: 4G LTE, mobile signal booster, Three 3, Indonesia, vehicle signal amplifier, improve mobile calls, cellular signal enhancement, external aerial
## Details
- **Price:** 139.99 GBP - 167.56 GBP
- **Vendor:** UKMobileBooster.com
- **Type:** Indonesia
- **Tags:** application 4G LTE Data & Voice Calls, application vehicle, has_stock_countdown, id id, provider Three
## Variants
| Variant | Price | Available |
|---------|-------|-----------|
| No | 139.99 GBP | In stock |
| Yes | 167.56 GBP | In stock |
## Images
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> Source: [B4U](https://www.ukmobilebooster.com/products/id-cvd-mobile-booster)
> Updated: 2026-09-02