Australia’s distances make mobile reception a real problem, and not only in the bush. Brick-veneer homes, metal roofs and energy-efficient glazing block signal in the suburbs too. Mobile signal boosters are widely advertised online, but in Australia the rules are strict. Here’s what’s allowed, what works, and what to try first.

What ACMA says

The Australian Communications and Media Authority (ACMA) regulates mobile repeaters. Its position is clear:

• It’s illegal to use a mobile phone repeater unless the carrier has authorised it. In practice that means a compliant, carrier-approved device. One example is Telstra’s Go Repeater, which is based on Cel-Fi technology.
• Unauthorised boosters can interfere with mobile networks, including emergency calls for other people. ACMA can take enforcement action, including fines.
• Buying a booster online doesn’t make it legal to use. Many boosters sold online aren’t authorised for use in Australia.

So the right question isn’t “which booster should I buy?”. It’s “what does my carrier offer or authorise for my address?“

Step 1: free fixes

1. Wi-Fi Calling. Telstra, Optus and Vodafone support it on compatible phones and plans. With home internet, calls and texts go over Wi-Fi with your number. Often the whole fix.
2. Phone settings. VoLTE on, software up to date, metal or magnetic cases off.
3. Best spot. Near a window facing the tower, or upstairs.
4. Compare networks. Telstra, Optus and TPG Telecom (Vodafone) have separate networks. A prepaid SIM tells you more than a coverage map.
5. Report the problem to your carrier with your exact address.

Step 2: ask your carrier about indoor coverage

If free fixes don’t solve it, contact your carrier:

• Telstra offers carrier-approved repeater options for eligible customers. Ask about the Telstra Go Repeater.
• Optus and Vodafone: ask what indoor coverage solutions or authorised repeaters they offer for your address. See our Optus guide.

Give them your address, the rooms affected, and the signal readings you see.

Step 3: understand your band

Knowing your band helps when you talk to your carrier. Australian networks use 700, 850, 900, 1800, 2100, 2300 and 2600 MHz, plus 3500 MHz for some 5G. Low bands (700/850) reach further and get through walls better. Our Australian mobile network frequencies guide explains each one. On Android, a free app like Network Cell Info shows the band.

What about 5G boosters?

The same rule applies: a 5G booster needs carrier authorisation. In practice, much 5G in Australia runs on 3500 MHz, which is short-range and weak through walls. For indoor 5G, Wi-Fi from a 5G home modem placed by a window is often a better approach than a repeater.

Rural properties

For farms and remote homes, the options include:

• carrier-authorised repeaters such as Telstra’s Go Repeater (ask your carrier about eligibility);
• 4G/5G modems with external antennas, for data;
• satellite internet with Wi-Fi Calling, where there’s no usable mobile signal at all;
• government programs (such as mobile black spot initiatives) to report coverage gaps.

FAQ

Are mobile signal boosters legal in Australia?
Only with the carrier’s authorisation and a compliant device. Using an unauthorised booster is illegal under ACMA rules.

Is there a Telstra-approved booster?
Telstra offers the Go Repeater to eligible customers. Ask Telstra directly.

Does a 5G booster need permission too?
Yes. The same rules apply to 4G and 5G.

What’s the cheapest way to fix poor reception at home?
Wi-Fi Calling, if you have home internet.

How do I contact you?
Email mysignalboosterteam@gmail.com or use the chat. See the FAQs.