Mobile Signal Booster Nikrans NG-300-Flex+5G for Calls and Internet

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Mobile Signal Booster Nikrans NG-300-Flex+5G for Calls and Internet

+ FREE
Lightning Surge Protector
(£30 value)

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Indoor coverage: 3300 ft²

5 Band ‌ Calls/GSM 4G/LTE 5G 3G

~~£675~~
£565 You save: £110

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Kit includes:

Booster with power supply,
Indoor ceiling antenna + 5m cable
Outdoor LPDA 9 dBi antenna + 20m cable
Mounting accessories
User manual

Need additional accessories?

Indoor cable:

Standard kit +17 ft - £10

Outdoor cable:

Standard kit +17 ft - £10 +33 ft - £20

Extended Warranty:

Standard Warranty +1 extra year - £35 +2 extra year - £70

Lightning protection NS-LSP
(£30 value)

FREE

Shipping to United Kingdom

£25

Total

£590

100% upfront only
Secure Payment
No registration required

Delivery time: 3-7 business days
30-DAY Return Policy
3-Year Warranty

In United Kingdom this booster works with:

Delivery time: 3-7 business days

All our signal boosters are shipped by express delivery services like DHL and FedEx that ensure a quick arrival (3-7 business days) of your order directly to your doorstep.

30-DAY Return Policy

Your satisfaction is the highest priority for us! If something goes wrong, you can return a booster set or exchange it within 30 days from the delivery date.

3-Year Warranty

If you have a problem with your device, it will be our problem. We will repair your booster for free within 3 years after the purchase.

Lowest Price Guaranteed

We do our best to provide the possibility to buy boosters at the most attractive and pleasant prices. If you find our devices at a lower price, we will match it.

Download Quick Overview

NG-300-Flex+5G Description

The NG-300-Flex+5G is a 5-band booster designed for improving 5G / 4G / GSM signal coverage in the main frequency bands of 700, 800, 900, 1800 and 2100 MHz both in your home or office. You can install it yourself using the manual we provide and get stable mobile coverage right away. People, pets, gadgets, and the environment are all safe with the repeater. CE and RoHS international safety certifications are proof of that.

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Coverage area

The NG-300-Flex+5G is the latest booster created to improve Internet signals of all types in areas of up to 300 m² (3,200 ft²). The model is good for large apartments, offices, cottages, basements, cafés, shops, etc. It can be used with all brands and models of smartphones, tablets, and other mobile devices.

Signal types supported

The NG-300-Flex+5G can be used with most mobile carriers and operates in most modern frequency bands, namely 700, 800, 900, 1800, and 2100 MHz. All of these bands are used nowadays for 4G transmission. At the same time, only 900 and 1800 MHz frequencies can provide voice calls, and the 5G transmission is possible in 700, 800, 1800 and 2100 MHz. The 4G and 5G frequency bands vary from country to country and from operator to operator. This booster covers all essential frequencies, ensuring reliable performance and seamless operation regardless of your country or carrier.

5 Band ‌ Calls/GSM 4G/LTE 5G 3G

Need more technical details? Download Data Sheet

In short, the 5-band NG-300-Flex+5G booster will give you the opportunity to enhance both mobile 5G / 4G Internet and phone calls of most operators.

Service and store rating

4.9

Product quality rating

4.7

Integrated user experience

4.9

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Benefits and features

The NG-300-Flex+5G is an excellent solution to the problem of poor 4G / 5G / GSM coverage, as it has the following features:

User-friendly LCD interface
You can read the installation tips, system functions and other important notes directly on the LCD screen of the booster. Thanks to this, using the NG-300-Flex+5G is easy even for those who are not familiar with technology.
AGC function
AGC (automatic gain control) means that the system shuts down when self-excitation is detected. In addition, the NG-300-Flex+5G automatically adjusts the gain level, detects malfunctions, and suggests their resolution. AGC function is also considered as Intelligent Isolation Detection function.
MGC function
MGC (manual gain control) is intended for advanced users who are familiar with technology and can customize the booster's performance.
Smart mode
The booster enhances and amplifies cell phone signals, ensuring improved voice and data transmission in areas with poor signal quality. It is secure for the network and does not interfere with other wireless devices.
Manual switching on/off of selected frequency bands
Since the NG-300-Flex+5G works at 5 frequencies, in areas served by multiple operators, manually selecting a band will help you adapt the booster to the specific frequency band used by your operator.

Download User Guide

The NG-300-Flex+5G kit includes everything you need to install and use the device properly. The system comes complete with a booster box, an indoor antenna with a 5-metre cable, an outdoor antenna with a 20-metre cable, mounting accessories, a power supply, and a user manual.

FREE

FREE Lightning Surge Protector (€30 value)

Get lightning protector as a bonus and save 30€

You will get a free lightning surge protector with the order of the NG-300-Flex+5G signal booster. This is a great opportunity to save about 30€, since lightning protection is essential for the effective work of the mobile booster. The device will protect your outdoor antenna from lightning strikes. The protector includes a grounding wire and it is installed between the booster box and the outdoor antenna. You should connect one end to the cable connector coming from the booster box, and the other one to the outdoor antenna. The lightning protection is strongly recommended for owners living in areas with frequently occurring thunderstorms.

The installation process of the NG-300-Flex+5G system is quick and simple so you will spend only about 15-20 minutes on it. And you don't need any special knowledge to do this. After you mount the booster box and connect it via cables to the antennas, you can turn the repeater on. The signal gets amplified in 5 seconds, and you will phone or surf the Internet without interruptions.

For trouble-free and efficient use of the booster, our technical team recommends that you read the user manual in advance.

Download User Guide

The NG-300-Flex+5G is the best way to improve the 5G / 4G / GSM connectivity of various carriers, including the model operation in 5 frequency bands. With the help of this booster you can easily ensure stable reception inside buildings up to 300 m² (3,200 ft²).

Reach Out for Assistance

In case you have questions regarding the installation or operation of the device, our Professional Support Team is always ready to provide you with professional advice on any issue.

Ask a question

Guess what? 8/20

Our smallest project was for a wooden cabin in the forest, with just 2 mobile users.

Safety & Certification

Every Nikrans signal booster is 100% safe for the users, domestic animals, gadgets and the environment. That is proven by the international safety certifications CE and RoHS. Read more about certification of Nikrans equipment here.

NG-300-Flex+5G Specification

Coverage 3300 ft²

Up-link freq 703-748,832-862,880-915,1710-1785,1920-1980 MHz

Down-link freq 758-803,791-821,925-960,1805-1880 2110-2170 MHz

Up-link Gain 60 dB

Down-link Gain 65 dB

Power Output 15 dBm

Working t °C -10/+50°C

Humidity ≤85%

IP-Code IP40

Size (mm) 208×147×30.5

Booster Weight ≤2.0 kg

Power supply Input: AC100~ 240V, 5V5A

Energy Consumption 0.007 kW/h

Model Year 2025

Download User Guide Download Data Sheet

NG-300-Flex+5G FAQ

Why do I buy at your online store?
What maximum length of the cable can you recommend between an outside antenna and a cell phone repeater?
How to interpret the results of signal testing in dB?
How does a cell phone repeater work?
Can I install a repeater system without a technician?
How do I know that my 4G/LTE repeater works?