3G Signal Amplifier Nikrans LCD-3503G

Image 3G Signal Amplifier Nikrans LCD-3503G
Image 3G Signal Amplifier Nikrans LCD-3503G
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Download Datasheet

How to install mobile repeater

Indoor coverage:
3800 ft²
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  4.7/5 — 25 reviews
1 Band
Kit contents
  • Nikrans LCD-3503G antenna booster,
  • indoor antenna + 5 m cable,
  • outdoor antenna + 20 m cable,
  • power supply,
  • manual 
Shipping (3-7 business days) to United Kingdom
Customize your order
  • 5-step pre-delivery check
  • 30-DAY return policy
  • 3-YEAR warranty & service
  • Secure payments


Nikrans LCD-3503G is developed for amplifying 3G signal strength and thus improving speed for Skype calls, YouTube video streaming, and social media. If you are residing in areas with little to no coverage, this 3G mobile signal booster will help you in always getting stable 3G internet connection with blazing fast speed. Here are some of its unique features:

  • LCD display. This model comes with an LCD display, showing the most important information such as setup tips, error messages and solutions, and other important system diagnostics data.
  • Sleep mode. The device goes to sleep mode when no activity is detected and turns back on when it is needed.
  • Automatic signal control. The device has a built-in automatic function for adjusting gains (ACG) depending on the incoming signal from the nearby towers. It also shuts off the device to avoid any damage, in case of interference with other networks.
  • Multiple-phone support. Nikrans has designed this model taking into account your needs. It supports more than 100 mobile connections simultaneously within its coverage area.
  • CE and RoHS certification. The booster comes with internationally recognised certificates showing it has passed all safety and technical standards.

This 3G booster operates at 2100 MHz frequency, which is one of the frequencies used by network providers in the UK and Ireland. However, please note that this model will only amplify your 3G internet coverage and will not work for GSM voice calls. With a huge coverage area of 350 m2 (3800 ft2), install it once and bid goodbye to all your network worries. This coverage area is sufficient enough for large offices, big apartments, villas, and even underground pubs and cafes.

Order LCD-1503G repeater now and enjoy unsurpassed 3G internet for Youtube, Skype calls, Whatsapp and social media.


Coverage: 3800 ft²
Up-link freq: 1920-1980
Down-link freq: 2110-2170
Up-link Gain: 50 dB
Down-link Gain: 60 dB
Power Output: 15 dBm
Working t °C: -25/+55 °C
IP-Code: IP40
Humidity: 5 - 95 %
Size (mm): 165 × 115 × 35
Booster Weight: 0 kg
Power supply: Input AC90~264V,output DC5V/2A
Model Year: 2020
Download Manual Download Datasheet

How it works

Looking at 3G Antenna Booster Nikrans LCD-3503G for the first time, it is difficult to believe that such a compact device can be so powerful and effective. This model is able to cover with the improved 3G signal an indoor zone of nearly 350 m2 (3800 ft2) which means that it can be a perfect variant for a private house, a large apartment and an office space.

Just with two antennas and one signal amplifier box LCD-3503G can send the improved signal to more than 100 cell phones if they are located within the area of its coverage.

Some pleasant news for all potential users of LCD-3503G: you do not need to buy something additional, everything needed for a proper work of this booster is already included in a standard kit. The same refers to all other Nikrans boosters, including our best-seller in France - LCD-150 3G mobile repeater.

Customer Reviews

 ·  A (United Kingdom)  ·  Verified Buyer  · 

Best for 2100 MHz band

This is an amazing amplifier. I bought it for a country house after we moved in, as the level of 3G signal was awful there. Although we could make and receive calls, 3G connection was completely lost in some places. According to the map, the provider's nearest tower is about 20 km away. WIth this booster which improves 2100 MHz band, 3G is speedy enough to upload browser pages fast, watch movies, and use any mobile app. Works great!

Appreciated Alice, we are glad to receive your feedback. Your opinion is very important for us. Best regards, sales team.

 ·  P (United Kingdom)  ·  Verified Buyer  · 

Only for 3G

If you need to boost weak 3G connection this booster will be okay for you, as it supports only one frequency of 2100 MHz. However, if you want to strengthen calls as well, you'd better choose an amplifier which boosts both 2100 MHz and 900 MHz bands.

Dear Paul, thanks for leaving the feedback. We would be glad to see you at our store again. With best regards, the team of Mobile signal boosters.

 ·  R (United Kingdom)  ·  Verified Buyer  · 

Reliable service

This is the second time I’ve ordered at Mobile signal boosters. I’m satisfied with the service and the product. The team is so polite and patient. Their manager helped me choose the right model and answered all my questions. I will recommend this company to all my friends as a reliable supplier of signal boosters.

Dear Ronald, thank you for the review. Looking forward to your next visit. With best regards, support team.

 ·  L (France)  ·  Verified Buyer  · 

Automatically adjusts power

The repeater is easy to use as it has an automatic gain control. You just need to install it correctly and benefit from the stable connection. The installation by the way isn’t difficult as well. The whole process is described in detail in the user guide sent with the order. Moreover, there are a lot of tips and videos available on Youtube.

Hi Louis, we are grateful for your feedback. Your opinion is very important to us. Regards, support team.

 ·  M (Italy)  ·  Verified Buyer  · 

Coped with the task

My wife ordered this device to solve our signal problems at home. We had no 3G as the location of the house wasn’t favourable enough. I can say that the booster coped with the task, the level of 3G is good enough now.

Dear Mateo, thank you for leaving the review. We are glad to know that your problem has been solved. With best regards, support team.

 ·  J (Ireland)  ·  Verified Buyer  · 

Good 1-band booster for 3G

I bought this booster to improve imperfect 3G at home. We had stable GSM, but for some reasons 3G was too weak. I was looking for a booster which improves only mobile internet, as I knew that such models were cheaper. This model is ideal for my requirements, thank you for helping me choose the right amplifier.

Hello John, thank you for leaving the feedback. We would be glad to see you at our store again. With best wishes, support team.

 ·  N (Georgia)  ·  Verified Buyer  · 

Nothing special

This booster improves only 3G connection as it works only at one frequency - 2100 MHz, so don’t even hope to improve your voice connection with its help. However, I should admit that the model is very compact and looks nice.

Hi Nina, thank you for leaving the review. We would be glad to provide you with detailed information about our booster models, just contact our team. Wishing you all the best, the team of Mobile-signal-boosters

 ·  L (Ireland)  ·  Verified Buyer  · 

So Stylish

I like the booster. It’s so stylish that I immediately fell in love with it. I bought it for my house to improve poor 3G signal. I’m very pleased with the level of signal I have now. Although the booster functions at only one frequency, it’s all I need, as GSM signal at home is satisfactory. However, be attentive, as the device doesn’t work with voice connection.

Hello Lora, we are glad to know that you like our product. Regards, the team of Mobile-signal-boosters

 ·  W  ·  Verified Buyer  · 

Domynikas Krauklis

This product works really great. It was super easy to install without the need to call the tech support line, and I did it myself with a help from my brother who put the outer antenna into place. I’d say that the booster is flawless for now, because I haven’t encountered any problems with it yet. Bought it three months ago. Maybe something will pop up in the future, and I’ll make sure to update the review if it does.

Hi, Domynikas! We’re glad that you like our product, and we would like to assure you that no issues would happen in the future. Best wishes, Support team.

 ·  K  ·  Verified Buyer  · 

Really improved the signal

My 3G signal went from 2 to 4 bars. It may not sound like an impressive result, but those who have had problematic signal would understand how big of a difference it makes. My phone now doesn’t have to load a single web page for 30 seconds, and I can even watch videos without buffering. I now have no dead spots inside my house, and I’m really enjoying the internet access, as if it’s not 2020 at all and everything had just been invented.

Hi Keeley! We’re glad that the connection at your place is so much better now. Thank you very much for the review. Best regards, Support team.

 ·  E  ·  Verified Buyer  · 

Good delivery

Everything I needed for the booster arrived in the package, nothing was lost or broken. The package was intact. The delivery was fast. I even expected it to be a little slower, to be honest. Very satisfied.

Hello Enzo! Thank you for your feedback, we appreciate it and we’re glad that you were satisfied with our delivery services. Best regards, Support team.

 ·  K  ·  Verified Buyer  · 

Would recommend

The metal inside my house’s walls killed almost all of the possible signal waves before they could even get to my devices. However, the signal booster helped me with this issue, because it catches the better quality signal waves outside and distributes them inside so that they don’t have to pass through walls before they can be caught. This booster model is a good and reliable device that I would recommend to people who have similar problems and house walls.

Hello, Korey! Thank you for your positive review. It’s good to know that your signal is now so much better! Best regards, Support team.

 ·  A  ·  Verified Buyer  · 

I love the way it works

This little thing has turned my almost nonexistent signal inside the house into something pretty decent. I really love the way it works, and it saves me a lot of time and helps me work from home. I’ve had terrible problems before, but now I can take my laptop to any room, and the signal would be absolutely perfect. The second floor might get a little bit of a better signal, but it’s still very much useable on the first floor as well.

Hello Adriana! It’s good to know that our company could help you solve your signal problems so efficiently.

 ·  T  ·  Verified Buyer  · 

LCD display is great

This model is worth buying at least for the reason of being equipped with LCD screen. All the system data is displayed on the screen, it’s so convenient to use!

Dear Tom, thank you for the feedback. We are glad to know that you liked the product. Best regards, Support team.

 ·  M  ·  Verified Buyer  · 

Works really good to boost signal

Well, it’s not called a “signal booster” for nothing! I didn’t have any signal at some parts of my office at all, and now it all works as it’s supposed to - both the signal booster and the internet modem that I have. As it turned out, the issues were not with the modem itself. I’m really glad that it all worked out well and I decided to try the booster first before changing the operator or buying another modem.

Hello Morwenna! Good to know that everything is now working so well at your office. Thank you for purchasing from our store. Best regards, Support team.

 ·  V  ·  Verified Buyer  · 

Nice Mini Repeater

I bought this booster for the office. I always use mobile internet and at work the signal isn’t good enough. Now I’m always connected to the 3G network when I’m at the office. I can do whatever I want.

Dear Vicky, thank you for the review. We are glad to know that you are satisfied with the result. Best regards, Support team.

 ·  S  ·  Verified Buyer  · 


I don’t have to run around my house trying to catch a signal. It’s a common thing when you’re living your rural life, and now I have spare time to actually use the internet instead of looking for the signal.

Hi Sharon, and thank you for your positive review. Good to know that your internet connection is now so much better. Best regards, Support team.

 ·  N  ·  Verified Buyer  · 

Too expensive for such a simple device

First I thought that this model amplifies both voice connection and mobile internet and I ordered it formy private house in the village. But then I discovered that it boosts only 3G. So I had to chooseanother model and to return this one back, as I needed to improve both types of signal. So, what can Isay? In my opinion, the price is too high for such a simple ONE BAND booster, which enhances onlythe level of mobile internet.

Dear Nick, thank you for the feedback. We offer the lowest price for this model at the market. If you find one lower, we will match it! Best regards, Support team.

 ·  G  ·  Verified Buyer  · 

Unlimited number of users

I’ve been using it in my pub for a few weeks. Have seen no problems with it yet. Can be used regardless of the number of users. It’s good for me and my clients.

Dear Glory, thank you for the review. We are happy to know that the device works well. Kindest regards, Support team.

 ·  G  ·  Verified Buyer  · 

Works well

I used to have good 3G signal only on the veranda. Now I can also have it in the kitchen at the opposite side of the house. A mighty device that I really enjoy using in my house. It’s also very easy to use.

Hello Gerald! We’re happy that you have a signal in all of your rooms. Please keep enjoying your purchase! Best regards, Support team.

 ·  J  ·  Verified Buyer  · 

Doesn’t improve voice connection

Be attentive! This model doesn’t work with GSM. It improves only 3G. I believe, it’s better to choose the model, which amplifies both GSM and mobile internet.

Dear Jennifer, thank you for the feedback. Your opinion is very important for us. Kindest regards, Support team.

 ·  A  ·  Verified Buyer  · 

Short cables in the set

The cables in the set were too short for my place. The length of the indoor antenna cable is 5 meters,and the outdoor antenna cable is 20 meters. I had to buy additionally in order to connect the device. Allthe other elements were as described at the website. The installation itself wasn’t hard to fulfill. Theamplifier works well, without errors and interruptions. The level of signal has increased significantly.

Dear Adam, thank you very much for the review. We would be glad to help you, if you need our assistance. Please, don`t hesitate to come back to us if neeed. Kindest regards, Support team.

 ·  A  ·  Verified Buyer  · 

Gave me 4 bars

My internet is now twice as fast as it used to be. The repeater gave me four bars instead of two that I had before. It’s a really huge boost, and it shows. Can’t remember the last time my internet was so stable.

Hello Alice! It’s good that you’re so much satisfied with your purchase from our store. Contact us if you need any more assistance! Best regards, Support team.

 ·  D  ·  Verified Buyer  · 

Small Coverage Area

Unfortunately, the booster didn’t cover my private house which is about 5000 ft2. When I’m standing near the indoor antenna everything is okay, but in farter rooms the situation with the signal hasn’t changed at all.

Dear Dan, thank you for the feedback. The indoor coverage of the model is 3800 ft2. We advise you to choose another model, with larger coverage capacity. Best regards, Support team.

 ·  B  ·  Verified Buyer  · 

Safe device

For me it was important to find a safe and healthy device, which will ensure stable mobile internet connection at my cottage in the village, as this is the only place where the whole family gathers on every holiday. LCD350 3G corresponds to this description. The booster has no harmful impact on people and it even decreases the level of radiation emitted by the mobile phone. All the documents were provided by the company.

Dear Brian, thank you for the review. We are glad to know that you all liked it. Best regards, Support team.

 ·  J  ·  Verified Buyer  · 

Good one band booster

I recommend this booster to everyone who wants to ensure stable 3G connection at home or at theoffice. I’m using the device at work, where GSM is okay, but mobile internet is awful. We actually, didnot have it at all. Now the situation is all different. My colleagues and I enjoy speedy 3G at the office.We can make video calls, all the mobile applications work without any interference. Videos at youtubeand other site are loading very fast and in high quality. We can surf the net for necessary informationand send important files to the clients and partners via mobile internet. This is a very good booster,IMHO!

Dear Jessica, thank you for the feedback. Keep on enjoying it! Kindest regards, Support team.

 ·  F  ·  Verified Buyer  · 


I have good GSM at home, but poor 3g. So I bought this model to boost the internet connection and I’m satisfied with the result. I can use my mobile internet in every room of the house now.

Dear Fred, thank you for the feedback. We are glad to know that the device helped solve your problem. Kindest regards, Support team.

 ·  S  ·  Verified Buyer  · 

Only for 3G

I have spent more than a month looking for a good booster to amplify poor mobile signal athome. And finally, I have found what I wanted! LCD-3503G is the model which matched all myrequirements. First of all, it is effective. It easily improves weak 3G inside my house within anarea of 330 m2. Secondly, it has a LCD screen which is very useful during the installation andlater during the operation of the device. Thirdly, the amplifier is compact and lightweight. Itdoesn’t occupy much space in the room. I’ve forgotten to mention that the booster works at2100 MHz frequency, so it’s compatible with several networks and can be used by many peopleat a time.

Dear Sarah, thank you for the review. We are glad to know that you’ve found what you wanted.Kindest regards, Support team.

Case Studies

John Servini, Hucknall

Fast delivery. Top service.

Mobile-signal-boosters delivery takes a very short period of time indeed, and it was very useful in my case. Lots of online stores have much longer delivery time, even if they claim it would be short, especially when it comes to delivering their products abroad. But Mobile-signal-boosters pleasantly surprised me. Everything I needed was already inside the package, safely packed and absolutely intact, and I give them high ratings for that.

Wesley Eustis, Dewsbury

I needed to enhance my 3G.

I chose Mobile-signal-boosters because the signal booster they offered me was perfect for all of my requirements. It was suitable for The People’s Operator frequencies, had the exact same price that I wanted, it was supposed to enhance only 3G internet signal, and it had a perfect size of the coverage zone. I’m usually pretty skeptical about online stores, but Mobile-signal-boosters’ policies were the thing that bought me completely.

Paul Harraghy, Leeds

Our mobile signal was too weak and we needed to amplify it!

1.I live in an apartment with my two roommates. We share a 3G router together, and everything was okay for us until the renovations in the neighborhood began. The material that was used to insulate the building made our internet signal became a bit disrupted. After that, another tall apartment building was built next to our house, and this is when the signal got significantly worse. It needed to be solved ASAP.
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