# Calls & 3G & 4G LTE - 250m2 (Swisscom/Sunrise/Salt/Yallo) Mobile Signal Booster ##### **Comprehensive Signal Boosting** Experience uninterrupted communication with our powerful mobile signal booster, capable of enhancing ALL calls and 3G & 4G LTE signals across major networks in Switzerland. Whether you're using Sunrise, Swisscom, or Salt, this device ensures crystal-clear voice calls and lightning-fast data speeds by amplifying frequencies of 900MHz, 1800MHz, and 2100MHz simultaneously. ##### **Enhanced Indoor Coverage** Our mobile booster is designed to cover areas up to 250 m², making it ideal for homes, cafes, and restaurants. Enjoy consistent and reliable connectivity throughout your space, eliminating frustrating dead zones and enhancing your 3G & 4G internet speeds for all users. ##### **Universal Network Compatibility** The Tri Band booster supports signals from multiple operators, providing seamless coverage for various mobile networks. Perfect for households with devices from different providers, this essential tool ensures everyone can stay connected, reduce dropped calls, and enhance overall call quality. ##### **Multiple User Support** Connect up to 25 devices simultaneously without sacrificing signal strength. Whether it’s for family use, in a small office, or a busy café, this booster guarantees that everyone enjoys fast data and improved call quality, ensuring no one has to wait for a signal. ##### **Easy Installation** The complete kit comes with everything you need for a hassle-free installation, including external and internal antennas, cables, and a power adapter. With simple plug-and-play setup, you can have your mobile booster up and running in no time, maximizing your signal without any complicated processes. ##### **Signal Enhancement Upgrades** Customize your setup by upgrading to a higher gain Yagi antenna for improved performance in low signal areas. You can also enhance protection against surges with our lightning surge protector, ensuring your equipment remains safe while delivering outstanding signal strength. It boost **All Calls, All 3G & 4G/LTE** signal on 900MHz, 1800MHz, 2100MHz frequencies, the frequencies used in **Switzerland** used by mobile networks to deliver their mobile services: 2G (also known as GSM), 3G, 3.5G (also known as HSDPA provides faster data rates than 3G) and 4G. It can boost all networks on Sunrise, Swisscom, Yallo, M-Budget, Lebara, Aldi mobile, Ortel mobile, Lycamobile, Ok.-mobile, Salt Mobile, UPC Cablecom, CoopMobile, TalkTalk and Mucho for improving **Voice Calls & 3G** signal. It also can boost all network operators excl. M-Budget 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. If you have a 4G ready phone, but you’re not in a 4G area, you’ll **still be able to use 3G**. 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. The system unlike other kits, this device will boost ALL networks including 2G, 3G, 4G and 4G Calling, is designed for universal mobile voice calls, 3G and 4G coverage. The solution will provide coverage on all 900MHz, 1800MHz, 2100MHz networks **simultaneously**. It's Tri 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/3G/4G Calls** Eliminates Dropped Calls **Battery Life** Get Longer On Your Phone **Send/Receive SMS** SMS Text Messages Quickly **Consistent Connection** Reliable 3G/4G Data **Seamless Switching** Back to Normal Network **Signal Wider Coverage** Reception Up to 250 sq.m. **3G/4G Internet** Faster Uploads & Downloads **Multiple Users** 25 Simultaneously * * * ### 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 \[Voice Calls & 3G & 4G LTE\] (Band 8, 3, 1) Country Switzerland **Boost All On** Swisscom (2G & 3G & 4G) Sunrise (2G & 3G & 4G) Salt Mobile (2G & 3G & 4G) Yallo (2G & 3G & 4G) Aldi mobile (2G & 3G & 4G) CoopMobile (2G & 3G & 4G) Lebara mobile (2G & 3G & 4G) Lycamobile (2G & 3G & 4G) Mucho (2G & 3G & 4G) M-Budget (2G & 3G) Ok.-mobile (2G & 3G & 4G) Ortel mobile (2G & 3G & 4G) TalkTalk (2G & 3G & 4G) UPC Cablecom (2G & 3G & 4G) Users Supporting 25 Simultaneously Band Tri Band 8 & 3 & 1 Frequency 900 & 1800 & 2100MHz Gain(dB) Uplink Gp≥55; Downlink Gp≥60 Up-link 890~915 MHz; 1710~1785 MHz; 1930~1990 MHz Down-link 935~960 MHz; 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 8, or 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.** ![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 mobile booster and how does it work? - A mobile booster is a device that helps improve mobile phone signal in areas where the reception is weak. It takes the existing signal from outside, strengthens it, and then broadcasts the stronger signal inside buildings like homes or restaurants. This means you'll be able to make clear calls and use your data more effectively, ensuring better communication. 2. Which mobile networks does this booster support? - This mobile booster works with many networks in Switzerland like Swisscom, Sunrise, Salt, Yallo, and more. It boosts signals for 2G, 3G, and 4G services, so no matter what carrier you use, you'll get better signal strength indoors. 3. Can I use my phone for calls and data while using the booster? - Yes! With the booster, you can make voice calls and use your mobile internet at the same time. It improves both the call quality and the speed of your data, allowing for faster uploads and downloads. 4. Is installation of a mobile booster complicated? - Not at all! The mobile booster kit comes with everything you need for installation, including antennas and cables. You just have to follow the instructions provided, and if you need help, there are resources available online to assist you. 5. What if there is weak signal outside my home? - A mobile booster amplifies existing signals, so if there is no signal outside, it won’t work. To function properly, you need some signal from the outside to boost. If you're in an area with no coverage, a booster won't help. 6. How far can the mobile booster cover? - This particular mobile booster can cover an area of up to 250 square meters. That means it’s ideal for medium-sized spaces like homes, cafés, or small businesses where you need better signal strength. 7. How many users can connect to this booster at once? - The booster can support up to 25 users at the same time. So if you have family or friends over, everyone can enjoy improved mobile connectivity. 8. What should I do if my signal is still weak after installation? - If you find that your signal is still weak after installing the booster, ensure that the outdoor antenna is correctly positioned to receive the best possible signal from the nearest cell tower. You may also check the connections to make sure everything is securely attached. 9. How to know if my phone supports 4G calling? - To check if your phone supports 4G calling, you can look in your phone settings or check with your service provider. You can also check if your phone shows VoLTE (Voice over LTE) in the network settings. 10. Can I upgrade my booster’s equipment later? - Yes! You have the option to upgrade your booster setup by adding higher-gain antennas or longer cables, which can improve performance even further based on your needs. TAGES: mobile signal booster, 3G 4G LTE booster, Switzerland mobile networks, improve voice calls, mobile coverage solution, indoor signal booster, multiple users support, clear voice calling ## Details - **Price:** 435.0 GBP - 555.0 GBP - **Vendor:** UKMobileBooster.com - **Type:** Switzerland - **Tags:** application Voice Calls & 3G & 4G LTE Data, ch Aldi, ch ch, ch CoopMobile, ch Lebara, ch Lycamobile, ch Mucho, ch Ok.-mobile, ch Ortel, ch Salt, ch Sunrise, ch Swisscom, ch TalkTalk, ch UPC Cablecom, ch Yallo, coverage up to 250 sq metres, has_stock_countdown, provider Aldi Mobile, provider CoopMobile, provider Lebara Mobile, provider Lycamobile, provider Mucho, provider Ok.-mobile, provider Ortel Mobile, provider Salt Mobile, provider Sunrise, provider Swisscom, provider TalkTalk, provider UPC Cablecom, provider Yallo ## Variants | Variant | Price | Available | |---------|-------|-----------| | No / No / No | 435.00 GBP | In stock | | No / No / Yes | 455.00 GBP | In stock | | No / Yes / No | 485.00 GBP | In stock | | No / Yes / Yes | 505.00 GBP | In stock | | 20 M / No / No | 455.00 GBP | In stock | | 20 M / No / Yes | 475.00 GBP | In stock | | 20 M / Yes / No | 505.00 GBP | In stock | | 20 M / Yes / Yes | 525.00 GBP | In stock | | 30 M / No / No | 465.00 GBP | In stock | | 30 M / No / Yes | 485.00 GBP | In stock | | 30 M / Yes / No | 515.00 GBP | In stock | | 30 M / Yes / Yes | 535.00 GBP | In stock | | 40 M / No / No | 475.00 GBP | In stock | | 40 M / No / Yes | 495.00 GBP | In stock | | 40 M / Yes / No | 515.00 GBP | In stock | | 40 M / Yes / Yes | 545.00 GBP | In stock | | 50 M / No / No | 485.00 GBP | In stock | | 50 M / No / Yes | 505.00 GBP | In stock | | 50 M / Yes / No | 535.00 GBP | In stock | | 50 M / Yes / Yes | 555.00 GBP | In stock | ## Images - Calls & 3G & 4G LTE - 250m2 (Swisscom/Sunrise/Salt/Yallo) Mobile Signal Booster - Calls & 3G & 4G LTE - 250m2 (Swisscom/Sunrise/Salt/Yallo) Mobile Signal Booster - Calls & 3G & 4G LTE - 250m2 (Swisscom/Sunrise/Salt/Yallo) Mobile Signal Booster - Calls & 3G & 4G LTE - 250m2 (Swisscom/Sunrise/Salt/Yallo) Mobile Signal Booster - Calls & 3G & 4G LTE - 250m2 (Swisscom/Sunrise/Salt/Yallo) Mobile Signal Booster - Calls & 3G & 4G LTE - 250m2 (Swisscom/Sunrise/Salt/Yallo) Mobile Signal Booster - Calls & 3G & 4G LTE - 250m2 (Swisscom/Sunrise/Salt/Yallo) Mobile Signal Booster - Calls & 3G & 4G LTE - 250m2 (Swisscom/Sunrise/Salt/Yallo) Mobile Signal Booster - Calls & 3G & 4G LTE - 250m2 (Swisscom/Sunrise/Salt/Yallo) Mobile Signal Booster --- > Source: [B4U](https://www.ukmobilebooster.com/products/ch-gdw250-mobile-booster) > Updated: 2026-09-02