# Calls - 250m2 (E-Plus/O2/Telekom/Vodafone) Mobile Signal Booster

##### **Enhanced Coverage**

  

The Calls - 250m2 Mobile Signal Booster significantly expands your mobile signal coverage, providing up to 250m² of improved reception. Whether you're in a home, office, or garage, say goodbye to dropped calls and slow data.  
![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)

##### **Compatibility with Major Carriers**

  

This booster offers seamless compatibility with leading mobile networks, including E-Plus, O2, Telekom, and Vodafone. No matter your provider, enjoy enhanced signal strength and reliable 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)

##### **Easy Installation**

  

Setting up the Calls - 250m2 Mobile Signal Booster is a breeze. With straightforward instructions and minimal equipment required, you can have it up and running within minutes—no technical expertise needed.  
![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)

##### **Improved Call Quality**

  

Experience crystal-clear conversations with reduced background noise and interruptions. This mobile signal booster enhances call quality, ensuring you stay connected with friends, family, and colleagues without disruption.  
![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)

##### **Supports Multiple Users**

  

Designed to support multiple devices simultaneously, the Calls - 250m2 booster is perfect for families or small offices. Everyone can enjoy boosted signals, ensuring no one is left without a strong connection.  
![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)

##### **Durability and Reliability**

  

Crafted with high-quality materials, this mobile signal booster is built to last. It offers a reliable performance even in challenging conditions, making it a smart investment for anyone seeking consistent mobile 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-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)  
  

## mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement

It boost **Calls** signal on 900MHz frequency, the frequency used in **Germany** used by mobile networks to deliver their mobile services: 2G (also known as GSM). It can boost all networks on E-Plus, O2, Telekom, Vodafone, Aldi Talk, Ay yildiz, Blau, Blauworld, NettoKOM, Ortel, WhatsApp SIM etc ALL operators for improving **Voice Calls & Text** signal. The booster is the best suitable for medium size, boost indoor signal coverage up to **250 m2**, perfect for home, cafes, restaurants, pubs, clubs and more.

* * *

**Clear Voice**  
No Miss Important Calls

**Send/Receive SMS**  
SMS Text Messages Quickly

**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.  
![mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement 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)  
![mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement 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.  
![mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement surge protector](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/ProductPageSurgeProtector.webp?v=1600640184)

* * *

### Specification

Application & Bands

Voice Calls & Text (Band 8)

Country

Germany

**Boost All On**

E-Plus (2G)  
O2 (2G)  
Telekom (2G)  
Vodafone (2G)  
Aldi Talk (2G)  
Ay yildiz (2G)  
Blau (2G)  
Blauworld (2G)  
Callmobile (2G)  
Congstar (2G)  
Debitel Light (2G)  
Edeka Mobil (2G)  
ExpressMobil (2G)  
Fonic (2G)  
Fyve (2G)  
Hellomobil (2G)  
HTP mobil (2G)  
Ja Mobil (2G)  
Kabel Deutschland (2G)  
Klarmobil Mobile (2G)  
Lebara Mobile (2G)  
Lidl Connect (2G)  
Lycamobile (2G)  
MobilCom-Debitel (2G)  
NettoKOM (2G)  
NetzClub (2G)  
Ortel Mobile (2G)  
Otelo (2G)  
Penny Mobil (2G)  
WhatsApp SIM (2G)

Users Supporting

25 Simultaneously

Band

Single Band 8

Frequency

900MHz

Gain(dB)

Uplink Gp≥50; Downlink Gp≥55

Up-link

890~915 MHz

Down-link

935~960 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 EU Power Adapter  
1 x 10 Meters Outdoor Cable

**Warming Tips:**  
Band Confirmation: This booster can boost signals on Band 8, 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 mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement 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 mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement 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 mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement 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)

![mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement signal coverage](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/Coverage.jpg?v=1698191834)

  

### **Application Scenarios**

  

![mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement home application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-home.png?v=1697980834)  
**Home**

![mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement office application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-office.png?v=1697980832)  
**Office**

![mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement garage application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-garage.png?v=1697980834)  
**Garage**

![mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement 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 Calls - 250m2 Mobile Signal Booster?  
    A: The Calls - 250m2 Mobile Signal Booster is a device designed to strengthen mobile phone signals in medium-sized areas, up to 250 square meters in Germany. It enhances voice call and text message reception for major networks like E-Plus, O2, Telekom, Vodafone and more. This is particularly useful for homes, cafes, and restaurants where signal is often weak.
2.  Q: How does the signal booster work?  
    A: The signal booster works in three simple steps. First, the outdoor antenna captures the existing mobile signal from the cell tower. Next, the booster amplifies this signal, making it stronger. Finally, the indoor antenna broadcasts the boosted signal throughout the room, ensuring your devices have excellent reception.
3.  Q: Can I use the booster if I have a weak signal outside?  
    A: No, the booster cannot create a signal from nothing. It requires at least 1 or 2 bars of signal outside to function effectively. If there's no signal beyond your walls, the booster will not work.
4.  Q: Is the installation difficult?  
    A: Not at all! The installation is straightforward. You just connect the indoor and outdoor antennas, position them correctly, and turn on the device. Detailed instructions are provided in the user manual to guide you through each step.
5.  Q: What areas can the booster cover?  
    A: The booster is designed to cover a space of up to 250 square meters. This coverage is perfect for homes, cafes, restaurants, offices, and more. If you need to cover a larger area, you can add more indoor antennas.
6.  Q: What do I do if I have no signal at all?  
    A: If you have no signal outside, the booster will not work. You need to ensure that there is at least a faint signal outside (1-2 bars) before the booster can amplify it inside your space.
7.  Q: What happens during a storm?  
    A: If your outdoor antenna is hit by lightning, there is a risk of damage to your booster. To prevent this, you can purchase a lightning surge protector that is easy to install and will protect your equipment from surges caused by storms.
8.  Q: What upgrades are available for the booster?  
    A: You can upgrade to a longer external cable, a higher gain Yagi antenna for better performance, and a lightning surge protector to safeguard your device. These upgrades can help improve signal reception and overall effectiveness.
9.  Q: Can multiple devices use the booster at the same time?  
    A: Yes! The Calls - 250m2 Mobile Signal Booster can support up to 25 devices simultaneously. This means you, your family, or colleagues can all enjoy improved mobile signal at the same time.
10.  Q: What is Band 8 and why does it matter?  
     A: Band 8 refers to a specific frequency used by mobile networks for 2G services. This booster specifically enhances signals on Band 8, which is necessary for making voice calls and sending texts on compatible devices in Germany.

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## Details

- **Price:** 110.0 GBP - 230.0 GBP
- **Vendor:** UKMobileBooster.com
- **Type:** Germany
- **Tags:** application Voice Calls, coverage up to 250 sq metres, de Aldi Talk, de Ay yildiz, de Blau, de Blauworld, de Callmobile, de Congstar, de de, de Debitel Light, de E-Plus, de Edeka Mobil, de ExpressMobil, de Fonic, de Fyve, de Hellomobil, de HTP mobil, de Ja Mobil, de Kabel Deutschland, de Klarmobil, de Lebara, de Lidl Connect, de Lycamobile, de MobilCom-Debitel, de NettoKOM, de NetzClub, de O2, de Ortel, de Otelo, de Penny Mobil, de Telekom, de Vodafone, de WhatsApp SIM, has_stock_countdown, provider Aldi Talk, provider Ay yildiz, provider Blau, provider Blauworld, provider Callmobile, provider Congstar, provider Debitel Light, provider E-Plus, provider Edeka Mobil, provider ExpressMobil, provider Fonic, provider Fyve, provider Hellomobil, provider HTP mobil, provider Ja Mobil, provider Kabel Deutschland, provider Klarmobil, provider Lebara, provider Lidl Connect, provider Lycamobile, provider MobilCom-Debitel, provider NettoKOM, provider NetzClub, provider O2, provider Ortel, provider Otelo, provider Penny Mobil, provider Telekom, provider Vodafone, provider WhatsApp SIM

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| No / No / No | 110.00 GBP | In stock |
| No / No / Yes | 125.00 GBP | In stock |
| No / Yes / No | 160.00 GBP | In stock |
| No / Yes / Yes | 180.00 GBP | In stock |
| 20 M / No / No | 130.00 GBP | In stock |
| 20 M / No / Yes | 150.00 GBP | In stock |
| 20 M / Yes / No | 180.00 GBP | In stock |
| 20 M / Yes / Yes | 200.00 GBP | In stock |
| 30 M / No / No | 140.00 GBP | In stock |
| 30 M / No / Yes | 160.00 GBP | In stock |
| 30 M / Yes / No | 190.00 GBP | In stock |
| 30 M / Yes / Yes | 210.00 GBP | In stock |
| 40 M / No / No | 150.00 GBP | In stock |
| 40 M / No / Yes | 170.00 GBP | In stock |
| 40 M / Yes / No | 200.00 GBP | In stock |
| 40 M / Yes / Yes | 220.00 GBP | In stock |
| 50 M / No / No | 160.00 GBP | In stock |
| 50 M / No / Yes | 180.00 GBP | In stock |
| 50 M / Yes / No | 210.00 GBP | In stock |
| 50 M / Yes / Yes | 230.00 GBP | In stock |

## Images

- mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement
- Man sitting on a couch using a smartphone with a blurred outdoor background UK Mobile Phone Signal Booster Improve Signal
- mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement
- mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement
- mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement
- mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement
- mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement
- mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement
- mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement
- mobile signal booster booster for Germany indoor signal coverage E-Plus O2 Telekom Vodafone improve call quality SMS text message booster signal amplifier mobile reception enhancement

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> Source: [B4U](https://www.ukmobilebooster.com/products/de-g250-mobile-booster)
> Updated: 2026-09-02