Can I keep my existing phone number when switching to a new prepaid SIM?

Yes — number porting allows you to keep your existing mobile number when switching networks. When you purchase a prepaid SIM at Mobile Connect, our staff can guide you through the porting process. You will need your existing account holder name, date of birth and account number from your current provider. The port typically completes within 2–4 hours for most transfers, and calls to your old number will automatically redirect to the new SIM during the process.

Buy Prepaid SIM Cards Underwood & Sunnybank Hills | Telstra Partner

Prepaid SIM Cards — Telstra, Boost, Belong & Optus

Q: Can I activate my prepaid SIM in store?

Yes — Mobile Connect offers in-store SIM activation at both our Underwood and Sunnybank Hills locations. Our staff will help you insert the SIM, complete the activation process, configure APN settings, and test data and calls before you leave the store. In-store activation is especially useful for customers switching networks or setting up a new phone for the first time.

Q: Which prepaid network has the best coverage in Brisbane?

Telstra operates Australia's largest mobile network by geographic coverage, making it the strongest choice for regional travel and outback areas. For Brisbane metro use, all four networks — Telstra, Boost Mobile (on Telstra's network), Belong (on Telstra's network) and Optus — provide excellent 4G and 5G coverage across south Brisbane suburbs including Underwood, Sunnybank Hills, Logan and surrounding areas. Boost Mobile and Belong both run on Telstra's infrastructure, offering comparable metro coverage at often lower price points.

Q: What is the difference between Telstra, Boost Mobile and Belong?

Telstra is the parent network — it offers the widest coverage, direct customer support and premium plans. Boost Mobile runs on Telstra's 4G and 5G network and typically offers competitive pricing with good data inclusions. Belong also runs on Telstra's network with a focus on simple, no-lock-in plans and environmental commitments. The key practical difference for Brisbane users: all three use the same Telstra infrastructure for metro coverage, but Telstra plans include direct carrier support while Boost and Belong are managed through their own apps and portals.

Q: Do prepaid SIM cards include 5G?

Yes — several prepaid SIM kits available at Mobile Connect include 5G access. Telstra's $44, $54, $200 and $395 prepaid SIM kits include 5G where available. Boost Mobile higher-tier plans also include 5G on Telstra's network. The Optus $350 Voice 5G SIM Starter Kit specifically includes 5G access on the Optus network. To use 5G, your handset must also be 5G capable. Our in-store staff can confirm 5G compatibility with your device.

Showing 19 products

Telstra

Telstra $2 Prepaid SIM Kit

✔ Starter SIM — activate with any Telstra recharge
✔ 4G & 5G network ready
✔ Nano / Micro / Standard included

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Telstra

Telstra $15 Prepaid SIM Kit

✔ Data included with recharge
✔ Unlimited standard calls & texts
✔ 4G network · 28-day expiry

$15

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⭐ Popular

Telstra

Telstra $44 Prepaid SIM Kit

✔ Large data included
✔ Unlimited standard calls & texts
✔ 5G included · 28-day expiry

$44

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⭐ Popular

Telstra

Telstra $54 Prepaid SIM Kit

✔ Extra data vs $44 plan
✔ Unlimited standard calls & texts
✔ 5G included · 28-day expiry

$54

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Telstra

Telstra $200 Prepaid SIM Kit

✔ Large data bank included
✔ Unlimited standard calls & texts
✔ 5G included · Extended expiry

$200

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Telstra

Telstra $395 Prepaid SIM Kit

✔ Maximum data allocation
✔ Unlimited standard calls & texts
✔ 5G included · Maximum validity

$395

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Boost Mobile

Boost $2 Prepaid SIM

✔ Starter SIM on Telstra network
✔ 4G & 5G network ready
✔ Activate with any Boost recharge

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Boost Mobile

Boost $28 Prepaid SIM Kit

✔ Data included
✔ Unlimited standard calls & texts
✔ Telstra 4G network · 28-day expiry

$28

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Boost Mobile

Boost $39 Prepaid SIM Kit

✔ More data included
✔ Unlimited standard calls & texts
✔ Telstra 4G/5G · 28-day expiry

$39

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Boost Mobile

Boost $49 Prepaid SIM Kit

✔ Large data included
✔ Unlimited standard calls & texts
✔ Telstra 4G/5G · 28-day expiry

$49

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⭐ Popular

Boost Mobile

Boost $180 Prepaid SIM Kit

✔ Large data bank included
✔ Unlimited standard calls & texts
✔ Telstra 4G/5G · Extended expiry

$180

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Boost Mobile

Boost $300 Prepaid SIM Kit

✔ Maximum data included
✔ Unlimited standard calls & texts
✔ Telstra 4G/5G · Maximum validity

$300

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Belong

Belong $34 SIM Starter Kit

✔ Data included
✔ Unlimited standard national calls
✔ Telstra network · 30-day expiry

$34

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Belong

Belong $39 SIM Starter Kit

✔ More data included
✔ Unlimited standard national calls
✔ Telstra network · 30-day expiry

$39

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⭐ Popular

Belong

Belong $40 Data SIM Kit

✔ Data only SIM — ideal for tablets
✔ No calls or texts included
✔ Telstra network · 30-day expiry

$40

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Belong

Belong $49 SIM Starter Kit

✔ Large data included
✔ Unlimited standard national calls
✔ Telstra network · 30-day expiry

$49

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Belong

Belong $59 SIM Starter Kit

✔ Large data included
✔ Unlimited standard national calls
✔ Telstra network · 30-day expiry

$59

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Optus

Optus $350 Voice 5G SIM Starter Kit

✔ Large data bank included
✔ Unlimited standard calls & texts
✔ 5G included · Extended validity

$350

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NetComm

Netcomm Mesh

✔ VDSL2 / ADSL2+ compatible
✔ Dual-band WiFi · Mesh ready
✔ In-store setup assistance available

$134$99Save $35

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We’re an Official Telstra Partner with stores in Underwood and Sunnybank Hills — and one of the most common questions we get is: “Which SIM should I get?” The honest answer? It depends on how you use your phone. That’s exactly what this page is here to help with.

We stock SIM kits from four networks — Telstra, Boost Mobile, Belong and Optus — starting from just $2. Telstra is Australia’s biggest network by coverage. If you travel to regional Queensland or rural areas regularly, it’s the most reliable choice. Boost Mobile and Belong run on the exact same Telstra towers, so you get identical Brisbane coverage for less. Optus is a solid option if you’re already on Optus and just need a new SIM, or if the $350 5G plan suits your data needs.

For Brisbane metro day-to-day use — Underwood, Sunnybank Hills, Eight Mile Plains, Logan, Calamvale — honestly all four networks work well. The bigger decision is usually about price and plan length. A $28 Boost SIM gives you a month of calls, texts and data for less than a daily coffee. A $395 Telstra SIM lasts a full year without thinking about recharging. We’re happy to walk you through the options in store and find what fits.

One thing we offer that you won’t get ordering online: we activate the SIM for you on the spot. We put it in your phone, set up the mobile data, make a test call, and if you’re switching from another network, we start the number port so you keep your existing number. You walk out with everything working. No delivery wait, no activation portal, no settings to figure out yourself. We see a lot of customers — especially seniors and people new to Australia — who’ve bought a SIM online and then struggled to get it working. In store, that’s never a problem.

All plans include data, standard national calls and texts unless noted. 5G requires a 5G-capable handset. Plan details and pricing are set by the respective carriers and subject to change.

Compare Networks — Telstra vs Boost vs Belong vs Optus

Not sure which prepaid network is right for you? Here’s a quick side-by-side comparison to help you decide.

Feature	Telstra	Boost Mobile	Belong	Optus
Underlying Network	Telstra	Telstra	Telstra	Optus
4G Coverage	✔ Largest in AU	✔ Telstra 4G	✔ Telstra 4G	✔ 2nd largest AU
5G Access	✔ Selected plans	✔ Selected plans	Limited	✔ $350 plan
Unlimited Calls & Texts	✔ Most plans	✔ Most plans	✔ Voice plans	✔ $350 plan
Data-Only SIM Option	—	—	✔ $40 Data SIM	—
Plan Expiry	28–365 days	28–365 days	30 days	Extended
Starting Price	From $2	From $2	From $34	From $350
In-Store Activation	✔ At Mobile Connect	✔ At Mobile Connect	✔ At Mobile Connect	✔ At Mobile Connect
Best For	Max coverage & regional travel	Telstra network, lower price	Simple plans, data SIM	Optus network users, 5G

Prepaid SIM Cards — Frequently Asked Questions

Common questions from Brisbane customers buying prepaid SIM cards at Mobile Connect.

Where can I buy a prepaid SIM card in Underwood or Sunnybank Hills?

You can buy prepaid SIM cards from Telstra, Boost Mobile, Belong and Optus directly at Mobile Connect — Official Telstra Partner. We have two Brisbane stores: Underwood Marketplace (24/3215 Logan Rd, ph 07 3219 8881) and Sunnybank Hills Shopping Town (21A/661 Compton Rd, ph 07 3711 6666). Walk in any day of the week — no appointment needed. We also offer in-store activation so your SIM is fully working before you leave.

Can I activate my prepaid SIM in store at Mobile Connect?

Yes — in-store SIM activation is available at both our Underwood and Sunnybank Hills locations. Our staff will insert the SIM, complete the activation process, configure mobile data (APN settings), and test calls and internet before you leave. This is especially helpful for first-time SIM users, customers switching networks, or anyone setting up a new phone. Number porting assistance is also available if you’re bringing your existing number across.

Which prepaid network has the best coverage in Brisbane?

All four networks we stock — Telstra, Boost Mobile, Belong and Optus — provide excellent 4G and 5G coverage across Brisbane metro including Underwood, Sunnybank Hills, Logan Central, Eight Mile Plains, Calamvale and surrounding suburbs. For regional Queensland and outback coverage, Telstra (and Boost/Belong which use Telstra’s network) leads significantly. For Brisbane metro-only use, all networks are comparable. Come in and our team can check coverage maps for your specific area.

What is the difference between Telstra, Boost Mobile and Belong?

All three use Telstra’s network infrastructure, so Brisbane coverage is essentially identical. The differences are in pricing, plan structure and support. Telstra is the direct carrier with the widest plan range and official support. Boost Mobile offers competitive pricing on the same Telstra 4G/5G network. Belong focuses on simple, no-fuss monthly plans and also offers a data-only SIM ($40) ideal for tablets and mobile broadband devices. If coverage and reliability are your priority and price is secondary, Telstra is the safe choice. For value on the same network, Boost is a strong option.

Do any prepaid SIM cards include 5G access?

Yes — several plans include 5G access. Telstra’s $44, $54, $200 and $395 prepaid SIM kits include 5G where available. Boost Mobile’s higher-tier plans also include 5G on Telstra’s network. The Optus $350 Voice 5G SIM Starter Kit specifically includes 5G on the Optus network. To use 5G, your handset must also be 5G capable — our in-store staff can confirm compatibility with your device before you purchase.

Can I keep my phone number when switching to a new prepaid SIM?

Yes — mobile number porting lets you keep your existing number when switching networks. When you purchase a SIM at Mobile Connect, our staff can assist with the porting process in store. You’ll need your current account holder name, date of birth and account number from your existing provider. Most ports complete within 2–4 hours. Calls to your old number automatically redirect during the process, so there’s no interruption to incoming calls.