# 3G & 4G LTE - 250m2 (Telekom/Cosmote) Mobile Signal Booster
##### **Enhanced Signal Boosting**
Experience superior mobile connectivity with our 3G & 4G LTE Mobile Signal Booster. Operating on 1800MHz and 2100MHz frequencies, it amplifies the signals from all major carriers in Romania including Telekom and Cosmote, ensuring reliable service even in challenging environments.
##### **Clear Voice Calls**
Say goodbye to dropped calls! With our booster, conversations are crystal clear thanks to support for 4G Calling (Voice over LTE). Whether you're on the go or at home, enjoy uninterrupted communication without missing important calls.
##### **Broad Coverage Area**
Perfectly designed for medium-sized spaces, our booster covers areas up to 250 m². Ideal for homes, cafes, restaurants, and more, it ensures that everyone can enjoy fast and stable mobile service, no matter where they are.
##### **Quick SMS Delivery**
Never miss a message! Our mobile signal booster enhances SMS delivery, ensuring that your text messages are sent and received swiftly, keeping you connected when it matters most.
##### **Dual Band Compatibility**
Our Dual Band booster supports both 3G and 4G networks simultaneously, making it an essential tool for households with multiple mobile carriers. Enjoy seamless connectivity across different devices and networks effortlessly.
##### **Complete Installation Kit**
Get everything you need in one package! The kit includes an external antenna, booster unit, internal antenna, cables, and power adapter. Plus, it's easy to install, so you can set up and start enjoying boosted signals without hassle.
It boost **3G and 4G LTE** signal on 1800MHz, 2100MHz frequency, the frequencies used in **Romania** used by mobile networks to deliver their mobile services: 3G, 3.5G (also known as HSDPA provides faster data rates than 3G) and 4G LTE. It work on both 1800Mhz (Band 3) & 2100MHz (Band 1) frequencies for improving ALL mobile carrier networks **3G** signal. And improving Telekom and Cosmote mobile carrier networks **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 3G**. The booster is the best suitable for medium size, boost indoor signal areas up to **250 m2**, perfect for home, cafes, restaurants, pubs, clubs and more.
This system is compatible with 3G and 4G mobile phone networks, will provide coverage on both 1800MHz, 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!
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**Wow 4G/3G Calls**
Eliminates Dropped Calls
**Clear Voice**
No Miss Important Calls
**Consistent Connection**
Reliable 4G/3G Data
**Send/Receive SMS**
SMS Text Messages Quickly
**4G/3G Internet**
Faster Uploads & Downloads
**Signal Wider Coverage**
Reception Up to 250 sq.m.
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### Upgrade External Cables
If our standard package 10 meter external cable length is not enough to cover your area you have an upgrade option.
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### 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)
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### 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.
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### Specification
(scroll to view all)
| | |
| --- | --- |
| Application & Bands | \[3G & 4G LTE \] (Band 3, 1) |
| Country | Romania |
| **Boost All On** | Orange (3G)
Vodafone (3G)
Telekom (3G & 4G)
Cosmote (3G & 4G)
Lycamobile (3G) |
| Users Supporting | 25 Simultaneously |
| Band | Dual Band 3 & 1 |
| Frequency | 1800MHz & 2100MHz |
| Gain(dB) | Uplink Gp≥60; Downlink Gp≥65 |
| Up-link | 1710~1785 MHz; 1930~1990 MHz |
| Down-link | 1805~1880 MHz; 2110~2180 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 Power Adapter
1 x 10 Meters Outdoor Cable
1 x 5 Meters Indoor Cable |
**Warming Tips:**
- Band Confirmation: This booster can boost signals on Band 3, or Band 1, 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.**
### **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.
#### **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**
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)
### **Application Scenarios**
**Home**
**Office**
**Garage**
**Metal Buildings**
1. What is a mobile signal booster? - A mobile signal booster is a device that helps improve your phone's signal strength. It takes signals from outside and amplifies them, making it easier to make calls, send texts, and use the internet on your 3G or 4G devices.
2. How does the 3G & 4G LTE booster work? - This booster works by capturing the mobile signals from cell towers outside your home or business and boosting them inside. It operates on two frequency bands: 1800MHz and 2100MHz, which are used by major mobile networks in Romania.
3. Will this booster work for all mobile networks? - Yes! This mobile signal booster is designed to enhance signals for major networks in Romania, including Telekom, Cosmote, Orange, Vodafone, and Lycamobile, improving both 3G and 4G connections.
4. How big of an area does the booster cover? - The 3G & 4G LTE booster can enhance signals in areas up to 250 square meters. This makes it ideal for homes, cafes, restaurants, and other medium-sized spaces.
5. Can I still use 3G if I don’t have 4G? - Yes! If you have a phone that supports 4G but are not in a 4G coverage area, you can still use 3G services. The booster helps support both technologies simultaneously.
6. What if there is no signal outside? - The booster needs an existing signal to amplify it. If there is no signal outside your building, the booster will not work. It's essential to have some level of signal to start with.
7. Is it easy to install the booster? - Yes, the signal booster kit comes with everything you need for installation, including antennas and cables. The installation process is straightforward, and you can follow the included instructions to set it up.
8. What should I do if I need longer cables? - If the standard 10-meter cables included with your booster kit are not long enough for your needs, you can upgrade to longer external cables for better placement and performance.
9. How do I check my phone’s frequency band? - To find out your phone's frequency band, you can dial \*3001#12345#\* on an iPhone and check the 'Freq Band Indicator' in 'Serving Cell Info'. Alternatively, you can use apps like 'CellMapper' or 'Network Signal Info Pro'.
10. What is the purpose of the lightning surge protector? - The lightning surge protector is designed to safeguard your signal booster and other equipment from high-voltage surges caused by lightning strikes. It's a simple yet essential add-on to keep your devices safe.
TAGES: 3G signal booster, 4G LTE booster, mobile signal booster Romania, Telekom mobile booster, Cosmote signal amplifier, indoor signal coverage 250m2, dual band mobile booster, improve mobile network reception
## Details
- **Price:** 295.0 GBP - 415.0 GBP
- **Vendor:** UKMobileBooster.com
- **Type:** Romania
- **Tags:** application 3G Data & 4G LTE Data, coverage up to 250 sq metres, provider Cosmote, provider Telekom, ro ro
## Variants
| Variant | Price | Available |
|---------|-------|-----------|
| No / No / No | 295.00 GBP | In stock |
| No / No / Yes | 315.00 GBP | In stock |
| No / Yes / No | 345.00 GBP | In stock |
| No / Yes / Yes | 365.00 GBP | In stock |
| 20 M / No / No | 315.00 GBP | In stock |
| 20 M / No / Yes | 335.00 GBP | In stock |
| 20 M / Yes / No | 365.00 GBP | In stock |
| 20 M / Yes / Yes | 385.00 GBP | In stock |
| 30 M / No / No | 325.00 GBP | In stock |
| 30 M / No / Yes | 345.00 GBP | In stock |
| 30 M / Yes / No | 375.00 GBP | In stock |
| 30 M / Yes / Yes | 395.00 GBP | In stock |
| 40 M / No / No | 335.00 GBP | In stock |
| 40 M / No / Yes | 355.00 GBP | In stock |
| 40 M / Yes / No | 385.00 GBP | In stock |
| 40 M / Yes / Yes | 405.00 GBP | In stock |
| 50 M / No / No | 345.00 GBP | In stock |
| 50 M / No / Yes | 365.00 GBP | In stock |
| 50 M / Yes / No | 395.00 GBP | In stock |
| 50 M / Yes / Yes | 415.00 GBP | In stock |
## Images
- 3G & 4G LTE - 250m2 (Telekom/Cosmote) Mobile Signal Booster
- 3G & 4G LTE - 250m2 (Telekom/Cosmote) Mobile Signal Booster
- 3G & 4G LTE - 250m2 (Telekom/Cosmote) Mobile Signal Booster
- 3G & 4G LTE - 250m2 (Telekom/Cosmote) Mobile Signal Booster
- 3G & 4G LTE - 250m2 (Telekom/Cosmote) Mobile Signal Booster
- 3G & 4G LTE - 250m2 (Telekom/Cosmote) Mobile Signal Booster
- 3G & 4G LTE - 250m2 (Telekom/Cosmote) Mobile Signal Booster
- 3G & 4G LTE - 250m2 (Telekom/Cosmote) Mobile Signal Booster
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> Source: [B4U](https://www.ukmobilebooster.com/products/ro-dw250-mobile-booster)
> Updated: 2026-09-02