# 4G LTE & Calls - 250m2 (Three/Oister) Mobile Signal Booster ##### **Enhanced Connectivity** Experience seamless communication with our 4G LTE & Calls Booster, designed to amplify signals across 900MHz and 1800MHz frequencies. This dual-band powerhouse supports various networks including Three and Oister, ensuring robust voice and text services. No more dropped calls—stay connected with clarity! ##### **Spacious Coverage** Cover large indoor areas of up to 250 m² effortlessly. Whether it's your home, cafe, or club, this booster guarantees exceptional signal strength and reliability, making it perfect for spaces bustling with multiple users across different networks. ##### **Improved Voice Clarity** Enjoy clearer voice calls with our booster, especially if your phone supports 4G Calling (VoLTE). This technology ensures that you won’t miss important calls, allowing for smooth and uninterrupted conversations even in areas with weak reception. ##### **Swift SMS Services** Send and receive text messages with lightning speed! Our signal booster facilitates quick SMS delivery, ensuring you stay in touch with family and friends without delays, regardless of network fluctuations. ##### **Easy Installation** Our signal booster kit is user-friendly and comes complete with all the necessary components for a straightforward installation. Enjoy hassle-free setup with the external aerial, internal aerial, cables, and power adapter all included in one package! ##### **Upgrade Options Available** Customize your booster with upgrade options like a higher gain Yagi antenna or a lightning surge protector. These enhancements ensure optimal performance, providing you with the best possible signal strength, especially in challenging conditions. It boost **All Calls & 4G/LTE** signal on 900MHz, 1800MHz frequencies, the frequencies used in **Denmark** used by mobile networks to deliver their mobile services: 2G (also known as GSM) and 4G. It can boost all networks on Three, TDC, Telenor, Telia, Cbb Mobil, Vectone Mobile, Lycamobile, Oister, Lebara and One Mobile for improving **Voice Calls & Text** signal. It also can boost all networks on Three and Oister for improving **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. 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. This system is compatible with all GSM mobile phone networks, will provide coverage on both 900MHz, 1800MHz frequency **simultaneously**. It's Dual Band booster and is an **ESSENTIAL** if many people in the same household are on different mobile phone networks! * * * **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** Reception Up to 250 sq.m. **4G/LTE Internet** Faster Uploads & Downloads * * * ### 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 Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal cables](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/Signal-Booster-Cable.jpg?v=1693125491) * * * ### 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) ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal 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 Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal surge protector](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/ProductPageSurgeProtector.webp?v=1600640184) * * * ### Specification (scroll to view all) Application & Bands \[4G/LTE & Calls\] (Band 3) Country Denmark **Boost All On** Three (2G & 4G) TDC (2G) Telenor (2G & 4G) Telia (2G & 4G) Cbb Mobil (2G & 4G) Lebara Mobile (2G) Lycamobile (2G) Oister (2G & 4G) One Mobile (2G) Vectone Mobile (2G & 4G) Users Supporting 25 Simultaneously Band Dual Band 8 & 3 Frequency 900 & 1800MHz Gain(dB) Uplink Gp≥50; Downlink Gp≥55 Up-link 890~915 MHz; 1710~1785 MHz Down-link 935~960 MHz; 1805~1880 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 **Warming Tips:** - Band Confirmation: This booster can boost signals on Band 8, or 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 Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal 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 Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal 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 Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal 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 Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal signal coverage](https://cdn.shopifycdn.net/s/files/1/0488/4129/3976/files/Coverage.jpg?v=1698191834) ### **Application Scenarios** ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal home application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-home.png?v=1697980834) **Home** ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal office application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-office.png?v=1697980832) **Office** ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal garage application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-garage.png?v=1697980834) **Garage** ![4G LTE Mobile Signal Booster UK Networks EE Vodafone O2 Indoor Coverage Improve Signal metal buildings application](https://cdn.shopify.com/s/files/1/0488/4129/3976/files/application-metal-buildings.png?v=1697980834) **Metal Buildings** 1. What is a 4G LTE & Calls Mobile Signal Booster? - A 4G LTE & Calls Mobile Signal Booster is a device that helps improve your mobile signal. It works by boosting the signals from your mobile network, allowing better voice calls, text messaging, and 4G internet. It's especially useful in larger spaces, such as homes, restaurants, or cafes, where the signal might be weak. 2. Which networks can this booster improve? - This signal booster can enhance signals from several networks, including Three, TDC, Telenor, Telia, Cbb Mobil, Vectone Mobile, Lycamobile, Oister, Lebara, and One Mobile. This means if you're using any of these networks, the booster can help improve your service! 3. How big of an area can the booster cover? - The mobile signal booster can effectively cover areas up to 250 square meters. This makes it suitable for medium-sized spaces, such as homes, cafes, and even clubs, ensuring that you have a strong signal where you need it most. 4. How do I check my phone's frequency band? - To check your phone's frequency band, you can dial \*3001#12345#\* and then press the Call button. After that, click on 'Serving Cell Info' to find the 'Freq Band Indicator'. Alternatively, you can use apps like 'CellMapper' or 'Network Signal Info Pro'. 5. Can the booster create a signal? - No, the signal booster can amplify existing signals but cannot create them. If there is no signal outside, the booster won't work. It's important to have some level of external signal for the booster to function effectively. 6. What comes in the booster kit? - The kit includes everything you need for installation. This means you'll get the booster itself, an outdoor antenna, an indoor antenna, a power adapter, and a 10-meter outdoor cable. It's designed to be easy to install at home. 7. What if I need longer cables? - If the standard 10-meter outdoor cable is not enough for your area, you have the option to upgrade to longer cables. This ensures that you can position the antennas optimally for the best signal reception. 8. What is the purpose of a Lightning Surge Protector? - A Lightning Surge Protector is used to protect your signal booster and its components from damage caused by electrical surges, such as lightning strikes. This is an important addition if your installation area is prone to storms and lightning. 9. Can multiple users use the booster at the same time? - Yes, the signal booster can support up to 25 users simultaneously. This is great for households or businesses where many people are using mobile devices at the same time. 10. Why is it essential to boost signals for different mobile networks? - Boosting signals for different mobile networks is essential because many people might be using various network providers. The dual-band nature of this booster ensures that everyone can enjoy improved call quality and data speeds, no matter their network. TAGES: 4G LTE booster, mobile signal booster, Denmark mobile networks, Three Oister signal boost, dual band signal booster, call quality improvement, indoor signal coverage, GSM booster ## Details - **Price:** 235.0 GBP - 355.0 GBP - **Vendor:** UKMobileBooster.com - **Type:** Denmark - **Tags:** application 4G LTE Data & Voice Calls, coverage up to 250 sq metres, dk dk, dk Oister, dk Three, has_stock_countdown, provider Oister, provider Three ## Variants | Variant | Price | Available | |---------|-------|-----------| | No / No / No | 235.00 GBP | In stock | | No / No / Yes | 255.00 GBP | In stock | | No / Yes / No | 285.00 GBP | In stock | | No / Yes / Yes | 305.00 GBP | In stock | | 20 M / No / No | 255.00 GBP | In stock | | 20 M / No / Yes | 275.00 GBP | In stock | | 20 M / Yes / No | 305.00 GBP | In stock | | 20 M / Yes / Yes | 325.00 GBP | In stock | | 30 M / No / No | 265.00 GBP | In stock | | 30 M / No / Yes | 285.00 GBP | In stock | | 30 M / Yes / No | 315.00 GBP | In stock | | 30 M / Yes / Yes | 335.00 GBP | In stock | | 40 M / No / No | 275.00 GBP | In stock | | 40 M / No / Yes | 295.00 GBP | In stock | | 40 M / Yes / No | 325.00 GBP | In stock | | 40 M / Yes / Yes | 345.00 GBP | In stock | | 50 M / No / No | 285.00 GBP | In stock | | 50 M / No / Yes | 305.00 GBP | In stock | | 50 M / Yes / No | 335.00 GBP | In stock | | 50 M / Yes / Yes | 355.00 GBP | In stock | ## Images - 4G LTE & Calls - 250m2 (Three/Oister) Mobile Signal Booster - 4G LTE & Calls - 250m2 (Three/Oister) Mobile Signal Booster - 4G LTE & Calls - 250m2 (Three/Oister) Mobile Signal Booster - 4G LTE & Calls - 250m2 (Three/Oister) Mobile Signal Booster - 4G LTE & Calls - 250m2 (Three/Oister) Mobile Signal Booster - 4G LTE & Calls - 250m2 (Three/Oister) Mobile Signal Booster - 4G LTE & Calls - 250m2 (Three/Oister) Mobile Signal Booster - 4G LTE & Calls - 250m2 (Three/Oister) Mobile Signal Booster - 4G LTE & Calls - 250m2 (Three/Oister) Mobile Signal Booster - 4G LTE & Calls - 250m2 (Three/Oister) Mobile Signal Booster --- > Source: [B4U](https://www.ukmobilebooster.com/products/dk-gd250-mobile-booster) > Updated: 2026-09-02