Crazy 5G 20GB
20GB
$25per month
- 5G access with download speeds up to 150Mbps
- 20GB of data every month
- Standard national calls included
- SMS and MMS within Australia included
- International SMS and MMS included
SIM-only mobile on the Optus network
Crazy 5G SIM plans
Bring your own phone and get 5G speeds up to 150Mbps on the Optus network. Standard calls and texts are included, there is no lock-in contract and you will never pay excess data charges.
From $25 per month
- 5G speeds up to 150Mbps
- Optional Shared Data Pack ($0.275/GB)
- No lock-in contract
- Free postage on your first SIM
- Keep your number
Pick your data, keep it simple
Three plans, one month at a time. Every plan has the same inclusions, so you only choose how much data you need.
Popular
Crazy 5G 50GB
50GB
$35per month
- 5G access with download speeds up to 150Mbps
- 50GB of data every month
- Standard national calls included
- SMS and MMS within Australia included
- International SMS and MMS included
Crazy 5G 100GB
100GB
$45per month
- 5G access with download speeds up to 150Mbps
- 100GB of data every month
- Standard national calls included
- SMS and MMS within Australia included
- International SMS and MMS included
International calls are charged at our published rates and taken from your account balance. Roaming packs are extra. See roaming below.
When your data runs out, it pauses automatically unless your SIM is in an active Mobile Shared Data Pack. Never pay surprise overage fees - calls and texts continue working normally.
What every plan includes
No bundling, no mandatory equipment and nothing hidden behind the headline price.
- Download speed on 5G
- Capped at 150Mbps
- Network
- Optus 5G, with Optus 4G where 5G is not available
- Standard national calls
- Included
- SMS and MMS (Australia)
- Included
- International SMS and MMS
- Included
- Cost per GB of extra data
- $0 excess charges (optional Shared Data Pack at $0.275/GB)
- Minimum term
- 1 month, no lock-in
- Early termination charge
- $0
- International calls
- Charged at our published rates
How the Mobile Shared Data Pack Works (4 Simple Steps)
Set up your account-wide backup pool in MyAccount and assign any active Crazy 5G Voice SIM in seconds.
-
Choose your monthly pool size (50 GB to 1,000 GB)
Pick the pool size that suits your business or family in the CrazyTel MyAccount portal (
Optus SIM-Cards -> Shared Data Pack). Your pack activates immediately. -
Select which Crazy 5G Voice SIMs can share the pool ($0 per SIM)
Add any active SIM on a Crazy 5G Voice plan (20 GB, 50 GB, or 100 GB 5G Voice) at no extra per-SIM cost.
-
SIMs use their own plan allowance first
Every SIM uses its own monthly data allowance as normal. Only when a member SIM reaches 100% of its individual plan does it begin drawing from the Shared Data Pack.
-
Protected against overage charges
If your Shared Data Pack reaches 100%, mobile data on over-limit SIMs simply pauses until the 1st of next month - or turns back on within 1-2 minutes if you upgrade your pool size. Voice calls and SMS continue working normally.
Pricing & Pool Size Examples
Flat rate of $0.275 per GB / month (inc GST) ($0.25/GB ex GST). You can pick any whole gigabyte amount between 50 GB and 1,000 GB.
50 GB min
Any whole GB
1,000 GB max
- Per month (inc GST)
- $55.00
- Per month (ex GST)
- $50.00
$0.00 cost to add or remove eligible Crazy 5G Voice SIMs. You can pick any exact whole GB between 50 GB and 1,000 GB in MyAccount.
| Monthly Pool Size | Price per Month (ex GST) | Price per Month (inc GST) | Cost to Add Eligible SIMs |
|---|---|---|---|
| 50 GB(Minimum) | $12.50 / mo | $13.75 / mo | $0.00 |
| 100 GB | $25.00 / mo | $27.50 / mo | $0.00 |
| 200 GB | $50.00 / mo | $55.00 / mo | $0.00 |
| 300 GB | $75.00 / mo | $82.50 / mo | $0.00 |
| 500 GB | $125.00 / mo | $137.50 / mo | $0.00 |
| 1,000 GB(Maximum) | $250.00 / mo | $275.00 / mo | $0.00 |
Plain-English Billing, Upgrades, Downgrades & Turn-Off Rules
We keep billing completely transparent so you always know what is charged today versus on the 1st of next month:
| Action | Charged Today | When It Takes Effect | What Happens to Your Data & SIMs |
|---|---|---|---|
| Create a Pack | Pool GB x $0.275 (inc GST) from your prepaid balance (no pro-rata) |
Immediately | Your pool is active straight away. Any selected data-paused 5G Voice SIM has its mobile data restored within 1-2 minutes. |
| Upgrade Pool Size | (New GB - Current GB) x $0.275 (inc GST) for the extra GB added |
Immediately | Your pool grows right away and renews at the new size on the 1st of each month. Any data-paused member SIMs have their data restored within 1-2 minutes. |
| Downgrade Pool Size | $0.00 today (no charge today, no refund) | 12:00 AM AEST on the 1st of next month | Nothing changes this month - you keep your full current paid pool until the end of the month. On the 1st of next month, your pool resets to the smaller size and lower monthly price. |
| Cancel a Scheduled Downgrade | $0.00 today | Immediately | Cancels your scheduled reduction so your pack stays at its current size on the 1st of next month. |
| Turn Off Pack | $0.00 today (stops all future monthly renewals) | 12:00 AM AEST on the 1st of next month | Because you already paid for this month, your SIMs keep using your remaining pool until the 1st of next month. You can turn your pack back on anytime before the 1st for $0.00. |
| Add a SIM to Pool | $0.00 | Immediately | Any data the SIM used above its plan limit before joining is not counted against your pool. If the SIM was data-paused, its data turns back on within 1-2 minutes. |
| Remove a SIM from Pool | $0.00 | Immediately | If the SIM is over 100% of its own plan, its mobile data pauses on the next usage check (~2 minutes). Any pool data it already consumed this month stays counted against this month's pool until the 1st reset. |
Eligible SIM Plans
Mobile Shared Data Packs are designed exclusively for active Crazy 5G Voice SIMs:
- Crazy 5G 20GB Mobile Plan ($25/mo)
- Crazy 5G 50GB Mobile Plan ($35/mo)
- Crazy 5G 100GB Mobile Plan ($45/mo)
Have an older 4G Voice SIM?
You can switch any active 4G Voice SIM to a Crazy 5G Voice plan inside MyAccount -> Optus SIM-Cards -> Manage SIM Cards -> Change Plan.
(Note: Data-only SIMs are not eligible for Mobile Shared Data Packs.)
Built-In Pool SMS Alerts
Stay in control of your team's shared data usage with automated SMS notifications:
- Set any Australian mobile number (
04xxxxxxxx) as your Pool Alert Mobile Number. - Toggle automatic SMS alerts at 25%, 50%, 75%, and 100% of your monthly pool allowance.
25% Alert
50% Alert
75% Alert
100% Alert
Take your SIM overseas
In Zone 1 countries, one flat daily pack covers your calls, texts and data. All roaming prices include GST and are taken from your account balance.
Zone 1: 5G roaming pack
$10per day, per pack
154 destinations including the United States, United Kingdom, Japan, New Zealand and most of Europe.
- Voice
- 3000 min
- SMS
- 3000
- Data
- 5GB
A pack can apply more than once in the same calendar day. Once any one allowance is exceeded that day, a new $10 pack is applied and what is left on the earlier pack is forfeited.
Zone 2 and Zone 3: pay as you go
Charged per use to your account balance and not covered by your plan inclusions. Zone 3 covers satellite and maritime networks.
| Type of use | Zone 2 | Zone 3 |
|---|---|---|
| Voice or video call, made or received (per min) | $1.84 | $4.89 |
| SMS sent (per 160 chars) | $0.62 | $1.84 |
| Receiving an SMS | $0.00 | $0.00 |
| Mobile data (per MB) | $1.23 | $18.95 |
| Connection fee (per outgoing call) | $0.00 | $0.00 |
Watch your data. Data in Zone 2 and Zone 3 is charged per MB and can cost a lot very quickly. Turn off mobile data and data roaming before you travel, or use a local SIM.
Roaming may be disabled. If we detect that you are in a Zone 2 or Zone 3 country, international roaming may be disabled on your service due to the high costs.
If a country is not listed, roaming is not available there. Keep Auto Top-Up enabled so your service is not paused while you are away. Download the full roaming rates (PDF)
Before you order
The practical details, in plain language.
What you need
- An unlocked, 5G-compatible phone. A 4G-only phone works, but only on the 4G network.
- A Crazytel SIM. Postage of your first SIM is free.
- Auto Top-Up switched on, so your monthly plan fee and any extras can be taken.
We do not supply handsets, and smartwatches that use eSIM are not supported. 5G is not available in all areas.
How billing works
Crazytel Mobile uses a Hybrid Prepaid model. Your plan fee is charged each month and renews until you cancel or port out.
Anything outside your plan, such as international calls, comes out of your account balance. If the balance reaches zero or goes negative, calls and SMS are paused. If it stays negative for 30 consecutive days, your service is cancelled.
International calls may be suspended if usage exceeds $200 in a billing cycle. Read the Hybrid Billing Policy.
Up and running in three steps
-
Create your account
Sign up online and set up Auto Top-Up. You manage everything from your Crazytel account.
-
Order your SIM
Choose a Crazy 5G plan and order your SIM. Postage of your first SIM is free. You can port your existing number across from another provider.
-
Activate and connect
Pop the SIM into your 5G phone and you are on the Optus network. Check your usage any time at myaccount.crazytel.com.au.
Frequently asked questions
Is 5G available everywhere?
No. 5G is not available in all areas. Where 5G is not available, your service runs on the Optus 4G network. Download speeds are capped at 150Mbps on 5G.
Do I need a 5G phone?
You need an unlocked, 5G-compatible phone and a Crazytel SIM. A 4G-only phone will work, but only on the 4G network. We do not supply handsets, and smartwatches that use eSIM are not supported.
What happens when I use all my data?
There are no excess data charges. When a SIM uses 100% of its monthly plan allowance, it automatically draws from your optional Mobile Shared Data Pack ($0.275/GB inc GST) if the SIM is added to your pool. If you do not have a Shared Data Pack (or your shared pool reaches 100%), mobile data is paused (not slowed) until the 1st of next month or until you add/upgrade a Shared Data Pack. Voice calls and SMS are not affected.
Does unused Shared Data Pack data roll over to the next month?
No. At 12:00 AM AEST on the 1st of each calendar month, your Shared Data Pack resets to its full monthly allowance and renews from your prepaid account balance. Unused pool data does not roll over.
Is the first month pro-rated if I create or upgrade a pack mid-month?
No. Creating or upgrading a Shared Data Pack charges the flat rate of $0.275 per GB (inc GST) immediately so that the full data allowance is available to your SIMs straight away. If you create or upgrade within the last 24 hours of the calendar month (AEST), the portal will ask you to confirm that you understand the pack resets and renews on the 1st of the upcoming month.
If one of my SIMs is already data-paused because it used 100% of its plan, will adding a Shared Data Pack turn its data back on?
Yes. As soon as you add that Crazy 5G Voice SIM to an active Shared Data Pack (or upgrade a full pack), CrazyTel automatically queues a mobile data restore with the network. Mobile data is typically back online within 1 to 2 minutes.
What happens if I remove a SIM after it has already used data from the shared pool?
Removing a SIM is free ($0.00) and takes effect immediately. Any pool data that SIM already used during the current calendar month remains counted against this month's pool until the 1st of next month so your pool usage stays accurate.
What happens if my Shared Data Pack reaches 100%?
We never bill excess data charges. When the Shared Data Pack reaches 100%, any member SIM that has also used 100% of its own monthly plan will have its mobile data paused until the 1st of next month - or you can upgrade your Shared Data Pack size at any time in MyAccount to restore data immediately. Voice calls and SMS remain active.
Is there a lock-in contract?
No. The minimum term is 1 month and the early termination charge is $0. You can cancel or port out at any time with no exit fee. We do not give pro-rated credits for part of a billing period.
Can I keep my current number?
Yes. Your number can be ported in from another provider.
How does billing work?
Crazytel Mobile uses a Hybrid Prepaid model. Your plan fee is charged each month and renews until you cancel or port out, so Auto Top-Up must stay enabled. Anything outside your plan, such as international calls, is taken from your account balance. If your balance reaches zero or goes negative, calls and SMS are paused, and if it stays negative for 30 consecutive days your service is cancelled. International calls may be suspended if usage exceeds $200 in a billing cycle.
Can I use my SIM overseas?
Yes, in the countries listed on this page. In a Zone 1 country, a 5G roaming pack costs $10 per day and includes 3000 voice minutes, 3000 SMS and 5GB of data. Zone 2 and Zone 3 are pay as you go and charged to your account balance, and if we detect you are in a Zone 2 or Zone 3 country, international roaming may be disabled due to the high costs. If a country is not listed, roaming is not available there and you may need a local SIM.
How do I check my usage?
Log in at myaccount.crazytel.com.au. Usage is refreshed about every 30 minutes. We also send SMS alerts when you are close to using your data, and a final SMS when it runs out.
What does it cost to post my first SIM?
Nothing. Postage of your first SIM is free.
Ready for Crazy 5G?
Questions first? Call 1800 272 998 or email helpdesk@crazytel.com.au.