# 3G - 250m2 (Spark/Skinny mobile/Slingshot) Mobile Signal Booster ##### **Enhanced 3G Signal** Experience crystal-clear 3G calls and faster data speeds with the 3G - 250m2 mobile signal booster. Designed to work seamlessly on 850MHz and 2100MHz frequencies, this powerful device effectively amplifies the signals for Spark, Skinny Mobile, and Slingshot networks, covering indoor areas up to 250 square meters. ##### **Universal Coverage** This dual-band booster provides reliable coverage for multiple mobile networks simultaneously, making it an essential solution for households with different phone providers. Say goodbye to dropped calls and hello to a consistent connection no matter where you are. ##### **Complete Installation Kit** Everything you need for a hassle-free installation is included in one convenient package. The kit features an external aerial, booster base unit, internal aerial, cables, and a power adapter, ensuring you have all the components necessary to enhance your mobile signal. ##### **Customizable Upgrades** Ensure optimal performance with upgrade options for external cables and antennas. If your coverage area requires more than the standard 10-meter cable, or if your indoor signal primarily reaches 1-2 bars, consider upgrading to a higher gain Yagi antenna for stronger reception. ##### **Surge Protection** Protect your investment with our Lightning Surge Protector, designed to safeguard your booster from high amperage surges caused by lightning strikes. This essential addition is easy to install and offers peace of mind by keeping your device safe from electrical disturbances. ##### **Supports Multiple Users** Enjoy enhanced connectivity with the ability to support up to 25 simultaneous users. This makes the 3G - 250m2 mobile signal booster perfect for homes, businesses, cafes, and more, ensuring everyone can stay connected. It boost **3G** signal on 850MHz, 2100MHz frequency, the frequencies used in **New Zealand** used by mobile networks to deliver their mobile services: 3G, 3.5G (also known as HSDPA provides faster data rates than 3G). It work on both 850Mhz (Band 5) & 2100Mhz (Band 1) frequencies for improving Spark, Skinny mobile and Slingshot mobile carrier **3G** signal. 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. The booster enhances cell signals is a low-cost amplifier that wirelessly enhances cell signals for cellular devices (smartphones, tablets, Kindle, etc). It provides stronger signals, longer battery life, and clear connections to your phone. This device will boost mobile providers' 3G 850MHz and 2100MHz (Band 5/1) network signal. The system is designed for universal 3G coverage. The solution will provide coverage on on both 850MHz, 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! * * * **Wow 3G Calls** Eliminates Dropped Calls **Consistent Connection** Reliable 3G Data **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 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 \[3G Data\] (Band 5, 1) Country New Zealand **Boost All On** Spark (3G) Skinny mobile (3G) Slingshot (3G) Users Supporting 25 Simultaneously Band Dual Band 5 & 1 Frequency 850MHz & 2100MHz Gain(dB) Uplink Gp≥60; Downlink Gp≥65 Up-link 824~849 MHz; 1920~1980 MHz Down-link 869~894 MHz: 2110~21700 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 5, 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 does the 3G Mobile Signal Booster do? - The 3G Mobile Signal Booster improves your mobile signal by making it stronger, which means you can make calls and use the internet more easily. It works for mobile networks in New Zealand, specifically for Spark, Skinny mobile, and Slingshot. 2. How big of an area can the booster cover? - This booster can enhance the signal in an area of up to 250 square meters. This is perfect for places like homes, cafes, or restaurants where many people use their mobile devices. 3. Can the booster work if there is no signal outside? - Unfortunately, the booster can only make existing signals stronger. If you have no signal outside, the booster won't be able to help you. 4. How can I check which frequency band my phone uses? - To find out if your phone is using band 5 or band 1, you can dial \*3001#12345#\* on your iPhone and check the 'Freq Band Indicator' under 'Serving Cell Info'. You can also use apps like 'CellMapper' or 'Network Signal Info Pro'. 5. What is included in the booster kit? - The booster kit comes with everything you need for installation, including the booster unit, outdoor and indoor antennas, cables, and a power adapter. It's designed to be easy to set up! 6. Is it possible to upgrade the cables and antennas? - Yes, you can upgrade to longer external cables or a higher gain Yagi antenna if your signal is weak. This can help improve performance, especially if your phone only shows 1 or 2 signal bars indoors. 7. How many users can connect to the booster at the same time? - The booster can support up to 25 users at the same time, making it great for families or small businesses where many people use mobile devices together. 8. What should I do if there’s a lightning storm? - It's a good idea to use a lightning surge protector with your booster. This device helps to protect your equipment from damage caused by lightning strikes. 9. Why is signal improvement important? - Improving your signal means you can enjoy clearer calls and faster internet. It helps prevent dropped calls and keeps you connected, especially in areas where the signal is usually weak. 10. Where can I find help if I need to install the booster? - You can find an easy installation guide on the product's website, or you could contact their customer support for assistance if you have any questions during the setup. TAGES: 3G signal booster, mobile signal amplifier, New Zealand mobile networks, Slingshot mobile signal, Spark mobile booster, Skinny mobile coverage, dual band booster, indoor cell signal enhancement ## Details - **Price:** 295.0 GBP - 415.0 GBP - **Vendor:** UKMobileBooster.com - **Type:** New Zealand - **Tags:** application Fast (3G), coverage up to 250 sq metres, frequency 850 2100MHz, nz nz, nz Skinny, nz Slingshot, nz Spark, provider Skinny mobile, provider Slingshot, provider Spark ## 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 - 250m2 (Spark/Skinny mobile/Slingshot) Mobile Signal Booster - 3G - 250m2 (Spark/Skinny mobile/Slingshot) Mobile Signal Booster - 3G - 250m2 (Spark/Skinny mobile/Slingshot) Mobile Signal Booster - 3G - 250m2 (Spark/Skinny mobile/Slingshot) Mobile Signal Booster - 3G - 250m2 (Spark/Skinny mobile/Slingshot) Mobile Signal Booster - 3G - 250m2 (Spark/Skinny mobile/Slingshot) Mobile Signal Booster - 3G - 250m2 (Spark/Skinny mobile/Slingshot) Mobile Signal Booster - 3G - 250m2 (Spark/Skinny mobile/Slingshot) Mobile Signal Booster --- > Source: [B4U](https://www.ukmobilebooster.com/products/nz-tw250-mobile-booster) > Updated: 2026-09-02