Name: Signal Hero Core 300 Booster
Brand: DoCall Boosters
Price: 275 GBP
Availability: InStock
Rating: 4.8 (564 reviews)

Signal Hero Core 300

Overview

Technical Sheet
NETWORK COVERAGE

Vodafone, VOXI, Lebara, Asda Mobile, Talkmobile: Band 20 and Band 3 - 800/1800 Mhz
O2, giffgaff, Tesco Mobile, Sky Mobile, Lycamobile: Band 20 and Band 3 - 800/1800 Mhz
EE , BT Mobile, Plusnet, 1pMobile : Band 20 and Band 3 - 800/1800 Mhz
Three , SMARTY, iD Mobile : Band 20 and Band 3 - 800/1800 Mhz
MAX GAIN

70 decibels (dB) amplification
IMPEDANCE

50 Ohm
POWER

AC: 100-240 V / 6 W
BOOSTER WEIGHT

≤1 kg
BOOSTER DIMENSIONS

210 × 150 × 28 mm

FAQ

Why Signal Hero mobile signal boosters is the best solution for poor reception?

Signal Hero mobile signal booster is the only working solution if you have a weak signal and dead zones. It helps to improve signal strength so you can access the internet more quickly, and stream videos without buffering.

With our booster you can make and receive calls without interruption, ensuring you're always in touch with your family and friends.

In general, the booster catches the signals from the nearest cell tower in the area by the external antenna which is included in the kit, then it sends the signal to the booster box. The box amplifies the signals, ensuring reliable coverage even in areas with poor signal strength, and the internal antenna spreads the signals inside the closed area.
Please, help me to find the best booster. How do I know which one?
If you want to find the best booster for you there are 2 easy options:
- Use our Booster Finder Wizard to find the best booster based on your needs.
- If you're still having trouble finding the right booster after using the Wizard, contact our technical support team via chat or phone. They'll be happy to assist you in finding the best solution.
What makes the Signal Hero different?

1. At Signal Hero, we are committed to providing high-quality boosters at unbeatable prices.
2. Since 2010, we've been dedicated to improving cellular signals with our specialized boosters, putting our CUSTOMERS FIRST every step of the way.
3. Our boosters fix more than the signal. Signal Hero customers enjoy fewer dropped calls, better voice quality, faster internet speeds, and improved video streaming.
4. In addition, we provide peace of mind with our industry-leading 24/7 after-sale service:
- Lifetime Support
- 3-Year Warranty
- Installation Services (for enterprise solutions)
5. And if it’s not a perfect solution for you, we’ll refund your purchase or replace it. No hard feelings.
Does this need installation? Can I set this up myself?

Installing our boosters is easy - in fact, 98% of our customers do it themselves. The device is plug-and-play, so all you need to do is attach the units with cables and mount the antennas. We provide simple installation guides and videos to help you along the way.

Moreover, we offer technical aftersales support after the delivery of your device, so you can have peace of mind knowing we're here to help.

Reviews:

4.8

564 customer reviews

WRITE A REVIEW ASK A QUESTION

WRITE A REVIEW Cancel reply

Score *

Name *

Email *

Your review *

ASK A QUESTION

Reviews (564) Questions (0)

Joseph W. Verified Customer2026/03/01

We live in the country in a house with metal siding and roof. We could only get a signal when standing in front of a window and that was only1 or 2 bars. Now we can get 3 of 4 bars anywhere in the house with the box just hanging on the downspout! I'm sure it will be really great when it is installed properly! I would highly recommend this booster!

Axel Ling Verified Customer2026/02/17

People love to come to my little Mexican restaurant by the beach. They love the food but they don't know what to do with the bad signal. The signal is so weak. I guess it has to do with the winds here and the fact that we are on an island. I bought this booster and had it installed. Once word got out that the signal at my restaurant is strong (strongest in the island fyi ) people flocked it. We can't keep up, but we love it!

Elliot P. Verified Customer2026/02/05

Don't know why I've had so many problems over the years with the signal in my office, but this gadget has sorted all my issues.

Toby T. Verified Customer2026/01/21

Great product, works well! I was skeptical until I installed the system and was pleasantly surprised. Definitely would recommend this product.

Rita Flyn Verified Customer2026/01/09

I thought I would have to return it because I had doubts about the product. But there has been no issue with it so far. I am quite pleased with the results

Signal Hero Core 300

Benefits and Features:

Overview

FAQ

Reviews: