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Optus roaming in Singapore: Passes and charges
Learn about Optus roaming in Singapore, including its $5 and $10 daily roaming passes, international roaming packs, and standard roaming rates.
If you are an Optus customer in Australia traveling to Singapore, you can stay connected using your regular SIM card. Since this country is included in the eligible Optus roaming zones, you can use Optus roaming in Singapore.
This guide covers all you need to know about Optus $5 and $10 roaming passes and international roaming packs in Singapore.
Then, if it doesn’t suit your trip length or data needs, consider Holafly travel eSIM as an alternative to Optus in Singapore, offering unlimited data, flexible plan durations, and 24/7 customer support.
Avoid hidden data costs
Get the full price upfront with a Holafly eSIM for Singapore. Enjoy unlimited data at no extra cost.
What is the Optus roaming country zone for Singapore?
Since Singapore belongs to Optus Roaming Zone 1, Optus international roaming works in this country. So, when you land in Singapore, you can simply turn on your phone and make calls or use data without having to purchase a Singapore SIM card.
Optus coverage is provided via local partner networks in Singapore, such as Singtel and StarHub.
Optus postpaid roaming pass for Singapore
Optus offers two roaming plans for its postpaid customers, including the $5 Daily Roaming Pass for recent postpaid plans and the $10 Daily Roaming Pass for older plans.
Optus $5 roaming pass for Singapore
Optus $5 roaming pass includes 5 GB of data and unlimited calls and SMS to use in one day. It will be added to your monthly bill and only charges on the days you use Optus roaming in Singapore.
- Available for: Optus Choice Plus, Optus Plus Family, Optus Plus Promo, Optus Choice Plus Data, Optus Plus Kids, Business Choice Plus, Business Choice Data Plus, Business Teams Plus, Qantas plans.
- Price: $5 per 24 hours (charged only on days used).
- Inclusion: 5 GB data per day, unlimited standard talk, and SMS.
- Note: This plan activates automatically when you make a call or use data in Singapore.
Optus $10 roaming pass for Singapore
The $10 roaming pass includes 1 GB of data per day and unlimited calls and SMS. It also charges on the days you use Optus roaming in Singapore.
- Available for: Older postpaid plans, Non-Choice Plus plans.
- Price: $10 per 24 hours.
- Inclusion: 1 GB data per day, unlimited standard talk & SMS.
- Note: If you are not sure whether 1 GB of data is enough for one day, use our data usage calculator to estimate your daily usage.
Optus prepaid international roaming packs for Singapore
Prepaid customers need to purchase an international roaming pack before their trip to Singapore. Otherwise, they will be charged at standard roaming rates, which can become very expensive quickly.
You can select one of the following packs based on your trip duration:
| Pack Type | Duration | Included Data | Standard Talk | Standard SMS |
|---|---|---|---|---|
| $5 International Roaming | 1 Day | 1 GB | 25 Mins | 50 SMS |
| $25 International Roaming | 14 Days | 5 GB | 50 Mins | 50 SMS |
| $45 International Roaming | 28 Days | 10 GB | 100 Mins | 100 SMS |
| $75 International Roaming | 186 Days | 15 GB | 100 Mins | 100 SMS |
If you run out of data or other inclusions before the plan expires, you can use the My Optus app to recharge the plan. Always make sure to have the latest version of the app on your phone.
Optus standard roaming rates for Singapore
If no roaming pass or pack is activated, the standard roaming rates apply, which can become very expensive, especially if you use the internet in Singapore for an extended period.
Postpaid standard rates
The standard pay-as-you-go roaming rates for postpaid plans are as follows:
- Data: $1.00 per MB.
- Talk: $1.50 per minute of making or receiving talk.
- SMS: $0.50 per text.
Warning: At $1 per MB, a simple data usage like scrolling Instagram or downloading photos can cost over $100 per day.
Note: If you are not eligible to use Optus daily roaming passes, it’s more cost-effective to purchase an eSIM to avoid roaming charges in Singapore.
Prepaid standard rates
The standard roaming rates for prepaid customers are applied as follows:
- Data: $0.50 per MB
- Talk: $1.00 per minute
- SMS: $0.50 per text
Warning: At these rates, navigating Google Maps or uploading a few photos or short videos to social media can cost over $50 per day. Make sure to purchase a roaming pack before your trip.
How to activate Optus roaming for Singapore
Whether you are a postpaid or prepaid customer, you can easily activate Optus roaming using the My Optus app.
Postpaid
- Go to the My Optus app.
- Select your mobile service.
- Find International Roaming in the Settings and turn it on.
- Check your eligibility for the $5 or $10 Daily Roaming Passes.
Prepaid
- Go to the My Optus app.
- Find Add-ons and select International Packs.
- Choose your preferred pack and make the payment.
Note: You can recharge an Optus prepaid service by SMS while overseas: text Menu to 9999, then follow the prompts to recharge with a saved payment method or voucher.
Final steps for both
Before starting your trip:
- Download the latest version of the My Optus app.
- Ensure the roaming is enabled on the app.
- Make sure to purchase the roaming pack before your trip.
While in Singapore:
- Enable data roaming on your phone.
Stay connected in Singapore with Holafly
It’s always more convenient to use the same SIM on your trips. But if you find Optus roaming in Singapore restrictive or expensive, you can use Holafly eSIM. With unlimited data, flexible plan durations, reliable coverage, and 24/7 customer support, Holafly lets you stay connected in Singapore without fear of extra charges or losing connection.
Holafly Singapore eSIM ranges from AU$5.90 to $2.43/day. It gets cheaper as the plan duration increases.
For those who would like to travel to another destination after Singapore, or remote workers who would like to travel a lot, Holafly Plans offers a monthly subscription with reliable coverage in 170+ destinations. Make sure you have an eSIM-compatible phone to use eSIM during your trips.
Avoid hidden data costs
Get the full price upfront with a Holafly eSIM for Singapore. Enjoy unlimited data at no extra cost.
Disclaimer: The data in this article is accurate as of April 8, 2026, and is subject to change.
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Formerly a travel journalist turned marketing copywriter, I found my way back to the travel world with Holafly—my dream company that made remote work possible. My motto? “Dream big and make it happen.” I’m passionate about writing, exploring the world, and staying active through walking, running, swimming, and hiking. I also love learning, reflecting, and connecting with inspiring minds.
