Dropped calls in the kitchen, one bar in the bedroom, and a speed test that crawls the moment you walk inside. If you are on Telstra and your reception at home is poor, you are not alone, and the fix is not always a new phone or a new plan. This guide covers what to check first, the free fixes worth trying, and how a Telstra signal booster works if the free fixes are not enough.

Why Telstra reception can be poor at home

Mobile signal weakens with distance from the tower, and it weakens again as it passes through your home. Common causes include:

  • Distance and terrain. Hills, valleys and tall trees between you and the nearest tower all reduce signal, which is a common problem in regional and rural areas.
  • Building materials. Brick, concrete, metal roofing, foil-backed insulation and energy-efficient tinted glass can all block mobile signal.
  • Network changes. Telstra closed its 3G network from 28 October 2024, so older devices that relied on 3G may now struggle or not connect at all.
  • Your phone. A phone that does not support the bands Telstra uses in your area will show weaker coverage than a compatible one.

Telstra bands: what to check

You do not need to be a radio engineer, but knowing the basics helps you understand your coverage and choose the right equipment. According to Telstra’s own published information:

  • 4G: Telstra’s 4G network mainly operates on 700 MHz (band 28). It also uses 1800 MHz, 900 MHz, 2100 MHz and/or 2600 MHz in some locations.
  • 5G: Telstra 5G operates on 3.6 GHz, supplemented with 850 MHz and 26 GHz mmWave in selected areas. Telstra reallocated its old 3G 850 MHz spectrum to 5G to extend coverage in regional Australia and improve in-building coverage.
  • 3G: Closed. Telstra began switching off 3G on 28 October 2024.

Two practical points come out of this:

  1. Check your phone supports band 28. Telstra notes that phones bought overseas or imported may not be set up for its main 700 MHz 4G band, which can mean reduced coverage, especially outside the major cities. Check your phone’s specifications.
  2. Low bands travel further. The 700 MHz and 850 MHz bands reach further and get through walls better, while 3.6 GHz 5G offers more speed but over a shorter range. If you only see 5G in the backyard and lose it indoors, that is often why.

Which bands are active at your address depends on your local tower, so any booster you consider should cover the bands Telstra actually uses where you live.

Free fixes to try first

Before you spend money, work through these. Several of them come straight from Telstra’s own troubleshooting advice.

1. Turn on Wi-Fi Calling

If you have home broadband, Wi-Fi Calling is often the quickest fix for indoor black spots. Your phone makes and receives calls over your Wi-Fi instead of the mobile network. Telstra says it is turned on by default on compatible devices, but it is worth checking:

  • iPhone: Settings, then Mobile, then Wi-Fi Calling.
  • Android: open your phone app, tap More (the three dots), then Settings, and look for Wi-Fi Calling.

Wi-Fi Calling only helps where your Wi-Fi reaches, and it relies on your internet connection, so it does not fix mobile data or reception away from the router.

2. Check for an outage

If your signal suddenly got worse, the problem may be the network rather than your home. In the My Telstra app, sign in, select Get Help, then Check for outages in your area. If there is an outage, the best option is to wait until it is fixed.

3. Restart and reset

  • Restart your phone to refresh its connection to the network.
  • Install any software updates for your phone.
  • Remove and reinsert your SIM, and check the SIM tray is clean.
  • Try resetting network settings (you will need to reconnect Wi-Fi and Bluetooth afterwards).

4. Test around the house

Walk around your home and garden with your phone and note where reception is good and bad. Upstairs rooms and rooms facing the tower are usually better. Sometimes simply moving your desk or charging spot to a stronger room solves the problem. This survey is also exactly what you need if you later install a booster.

5. Talk to Telstra

If none of the above helps, contact Telstra. They can check for network issues in your area and talk you through the options they offer for in-home coverage.

How a Telstra signal booster works

If you have usable Telstra signal outside but poor signal inside, a booster (also called a repeater) is designed to bring that outside signal in. A typical home system has three parts:

  1. An outdoor antenna, mounted on the roof or a high wall where the Telstra signal is strongest.
  2. The booster unit, which amplifies the signal on the bands it is built for.
  3. One or more indoor antennas, which spread the stronger signal through your home.

It also works in reverse, carrying your phone’s signal back out to the tower. One thing a booster cannot do is create signal from nothing. If there is no Telstra signal at all outside your home, there is nothing to boost.

What to look for in a Telstra mobile signal booster for home

  • The right bands. Match the booster to the Telstra bands used at your address. For many homes that means 700 MHz 4G, and for Telstra 5G coverage the 850 MHz band is often the important one. A booster that does not cover your local band will not help, however powerful it is.
  • Coverage area. Choose a kit sized for the space you need covered, not just the floor area of the whole property. A single room, a whole floor and a large home all need different setups.
  • Outdoor signal strength. If you only have one or two bars outside, you may need a higher-gain outdoor antenna to get a good result.
  • Installation. Think about where the outdoor antenna will go, how the cable will get inside and where the indoor antenna will sit. The two antennas need plenty of separation to avoid feedback.
  • Support. Look for a seller who will help you choose the right kit and troubleshoot the setup if it does not perform as expected.

You can compare options in our Telstra signal booster range. For example, the Home Pro Telstra 5G signal booster is built for the 850 MHz band. Our installation guide explains the basic setup, and our floor plan analysis can help you work out where antennas should go.

Check the rules before you buy

Mobile repeaters and boosters are regulated in Australia. The Australian Communications and Media Authority (ACMA) says you need written permission from your mobile carrier to operate a mobile repeater on its network, and carriers only authorise a limited range of devices. Before you buy or install any booster, read the ACMA rules on cellular mobile repeaters and check with Telstra about what you are allowed to use at your address. You are responsible for making sure your setup meets the rules.

Quick checklist

  1. Confirm your phone supports Telstra’s main bands, including band 28.
  2. Turn on Wi-Fi Calling.
  3. Check the My Telstra app for outages.
  4. Restart, update and reset network settings.
  5. Map the strong and weak spots in and around your home.
  6. Talk to Telstra about coverage options.
  7. If you are considering a booster, check the ACMA rules and your carrier first, then match the bands and coverage area to your home.

Need advice?

Have a question about Telstra reception at home or choosing a booster? Read our FAQ or contact our team. You can email support@mysignalboosters.com or use the chat on our website. Delivery on MPSB boosters is free and takes 5-7 working days.