# 4G LTE - 250m2 (Three 3) Mobile Phone Signal Booster

##### **Extended Indoor Coverage**

  

This 4G LTE signal booster offers impressive indoor coverage of up to 250 square meters, ensuring that you enjoy stable and reliable connections throughout your home, office, or commercial space. Perfect for medium-sized areas like cafes, pubs, and restaurants.  
![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Feature1-1.png?v=1780277092)

##### **Multiple Users & Devices Support**

  

Say goodbye to dropped calls and slow internet! This booster supports up to 25 simultaneous users, allowing multiple devices to benefit from enhanced signal strength and reliable 4G LTE connectivity.  
![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Feature2.png?v=1780223075)

##### **Comprehensive Installation Kit**

  

The complete kit includes everything you need for quick and straightforward installation. With an outdoor antenna, indoor antenna, signal booster, and 10-meter outdoor cable, you’ll have all the essentials to set up your system with ease.  
![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Feature3.png?v=1780223075)

##### **Reliable Performance**

  

Engineered to enhance 4G LTE signals at a frequency of 1800MHz (Band 3), this booster guarantees consistent data transmission and faster upload/download speeds, ensuring you stay connected without interruptions.  
![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Feature4.png?v=1780223075)

##### **User-Friendly Setup**

  

Installation is simple and hassle-free! Follow the easy-to-understand instructions, and you’ll have your signal booster up and running in no time, enhancing your connectivity without complicated procedures.  
![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Feature5.png?v=1780223075)

##### **Enhanced Signal Quality**

  

Experience crystal-clear voice calls and smooth data streaming with significantly improved signal quality. This booster amplifies weak signals, ensuring you stay connected, whether it’s for work or leisure activities.  
![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Feature](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Feature6.png?v=1780223075)

## **3 Steps to Full Bars**

## 1\. Place the Outdoor Antenna

Mount the antenna where you get the best signal.  
![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Install](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Install-1.gif?v=1780223819)  
  

## 2\. Connect the Booster Inside

Plug in the booster and connect to the antenna.  
![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Install](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Install-2.gif?v=1780223819)  
  

## 3\. Enjoy Full Bars Everywhere

Clear calls, fast data, and no more dead zones.  
![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal Install](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Install-3.gif?v=1780223819)  
  

## 4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection

It boost **4G LTE** signal on 1800MHz frequency, the frequency used in **Italy** used by mobile networks to deliver their mobile services: 4G. It work on 1800Mhz (Band 3) frequency for improving Three (3) mobile carrier networks **4G LTE** 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.

* * *

**Consistent Connection**  
Reliable 4G/LTE Data

**4G/LTE Internet**  
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.  
![4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection cables](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/ProductPageCable.webp?v=1600639912)

* * *

### 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 shown dBm reading on phone, can refer [Quick Start Guide](https://www.ukmobilebooster.com/pages/quick_start_guide)  
![4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection 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 signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection surge protector](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/ProductPageSurgeProtector.webp?v=1600640184)

* * *

### Specification

Application & Bands

\[4G LTE\] (Band 3)

Country

Italy

**Boost All On**

Three 3 (4G)

Users Supporting

25 Simultaneously

Band

Single Band 3

Frequency

1800MHz

Gain(dB)

Uplink Gp≥55; Downlink Gp≥60

Up-link

1710~1785 MHz

Down-link

1805~1880 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 EU Power Adapter  
1 x 10 Meters Outdoor Cable

**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.

### 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 signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection 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 signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection 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 signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection 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 signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection signal coverage](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/Coverage.jpg?v=1698191834)

  

### **Application Scenarios**

  

![4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection home application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-home.png?v=1697980834)  
**Home**

![4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection office application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-office.png?v=1697980832)  
**Office**

![4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection garage application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-garage.png?v=1697980834)  
**Garage**

![4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection metal buildings application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-metal-buildings.png?v=1697980834)  
**Metal Buildings**

1.  Q: What is the purpose of a mobile phone signal booster?  
    A: A mobile phone signal booster helps improve the strength of your mobile phone signal. It picks up weak signals from outside, amplifies them, and then broadcasts the stronger signal inside your home or office. This means better call quality and faster internet speeds!
2.  Q: How big of an area does the 4G LTE - 250m2 signal booster cover?  
    A: This booster can cover an indoor area of up to 250 square meters. This is perfect for medium-sized spaces like homes, cafes, or restaurants, ensuring that multiple devices can connect without problems.
3.  Q: Can I connect multiple devices at the same time?  
    A: Yes! The 4G LTE - 250m2 booster can support up to 25 devices at the same time. So whether it’s phones, tablets, or computers, everyone can enjoy better reception!
4.  Q: What if I don’t have any signal outside?  
    A: The booster needs some signal from outside to work. If there’s no signal at all outside, it won’t be able to do its job. You need at least 1-2 bars of signal to make it effective.
5.  Q: How do I install the signal booster?  
    A: Installing the signal booster is simple! First, connect the indoor and outdoor antennas. Then, place the outdoor antenna where you get the best signal and power on the device. Make sure everything is in place before turning it on!
6.  Q: What kind of cables come with the booster?  
    A: The booster comes with a standard 10 meter outdoor cable included in the kit. If you need extra length, you can upgrade to longer cables as needed for your specific installation.
7.  Q: Can I upgrade my antennas for better performance?  
    A: Absolutely! If you’re having issues with signal strength indoors, consider upgrading to a higher gain outdoor antenna for better performance. This can help improve reception significantly.
8.  Q: Is the signal booster safe to use?  
    A: Yes, the signal booster is safe to use in your home. It’s designed to amplify signals without causing harm to your devices or your health.
9.  Q: How do I check if the booster works correctly?  
    A: Once installed, you can verify it's working by checking your phone's signal strength. Make adjustments to the outdoor antenna until you find the best signal. You can also use apps to monitor signal quality.
10.  Q: What should I do if I have questions after buying the booster?  
     A: If you have any questions or need help after purchasing, you can check the user manual on the website or contact customer support for assistance. They are there to help you!

Tags: [4G LTE signal booster](https://www.ukmobilebooster.com/products/it-d250-mobile-booster), [mobile phone signal booster](https://www.ukmobilebooster.com/products/it-d250-mobile-booster), [Three 3 booster](https://www.ukmobilebooster.com/products/it-d250-mobile-booster), [indoor coverage 250m2](https://www.ukmobilebooster.com/products/it-d250-mobile-booster), [Italy mobile networks](https://www.ukmobilebooster.com/products/it-d250-mobile-booster), [Band 3 signal booster](https://www.ukmobilebooster.com/products/it-d250-mobile-booster), [1800MHz signal amplification](https://www.ukmobilebooster.com/products/it-d250-mobile-booster), [reliable cellular connection](https://www.ukmobilebooster.com/products/it-d250-mobile-booster)

## Details

- **Price:** 169.0 GBP - 289.0 GBP
- **Vendor:** UKMobileBooster.com
- **Type:** Italy
- **Tags:** application 4G LTE Data, coverage up to 250 sq metres, has_stock_countdown, it it, it Three, provider Three 3

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| No / No / No | 169.00 GBP | In stock |
| No / No / Yes | 189.00 GBP | In stock |
| No / Yes / No | 219.00 GBP | In stock |
| No / Yes / Yes | 239.00 GBP | In stock |
| 20 M / No / No | 189.00 GBP | In stock |
| 20 M / No / Yes | 209.00 GBP | In stock |
| 20 M / Yes / No | 239.00 GBP | In stock |
| 20 M / Yes / Yes | 259.00 GBP | In stock |
| 30 M / No / No | 199.00 GBP | In stock |
| 30 M / No / Yes | 219.00 GBP | In stock |
| 30 M / Yes / No | 249.00 GBP | In stock |
| 30 M / Yes / Yes | 269.00 GBP | In stock |
| 40 M / No / No | 209.00 GBP | In stock |
| 40 M / No / Yes | 229.00 GBP | In stock |
| 40 M / Yes / No | 259.00 GBP | In stock |
| 40 M / Yes / Yes | 279.00 GBP | In stock |
| 50 M / No / No | 219.00 GBP | In stock |
| 50 M / No / Yes | 239.00 GBP | In stock |
| 50 M / Yes / No | 269.00 GBP | In stock |
| 50 M / Yes / Yes | 289.00 GBP | In stock |

## Images

- 4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection
- Man sitting on a couch using a smartphone with a blurred outdoor background UK Mobile Phone Signal Booster Improve Signal
- 4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection
- 4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection
- 4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection
- 4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection
- 4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection
- 4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection
- 4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection
- 4G LTE signal booster mobile phone signal booster Three 3 booster indoor coverage 250m2 Italy mobile networks Band 3 signal booster 1800MHz signal amplification reliable cellular connection

---

> Source: [B4U](https://www.ukmobilebooster.com/products/it-d250-mobile-booster)
> Updated: 2026-09-02