Optus Daily Roaming vs Travel eSIM: Price Review

Optus daily roaming costs $5 per day for a limited data cap, which can quickly add up to a significant expense on a standard two-week holiday. In contrast, a travel eSIM offers a larger pool of data for a single upfront price, often costing less than half of what you would pay for a carrier roaming plan. By switching to a digital SIM, you avoid the 'roaming tax' and connect directly to local networks the moment your plane touches the tarmac.## The $5 Per Day Trap: How Optus Roaming Adds UpFor most Australians and Kiwis, the convenience of keeping your home SIM active is tempting. Optus offers a 'Daily Roaming' add-on for $5 per 24-hour period in 'Zone 1' countries. While $5 sounds like the price of a coffee, the math changes when you look at a full trip. If you are heading to Bali or Japan for 14 days, you are looking at $70 just to keep your phone connected. If you accidentally leave your roaming on in a 'Zone 2' country, you could be looking at pay-as-you-go rates that are genuinely terrifying.The biggest issue isn't just the price; it is the limitation. Optus typically gives you 5GB of data per day. While that sounds generous, it resets every 24 hours. If you use 6GB in one day because you were uploading travel vlogs or Using an eSIM for Work Zoom Calls While Traveling, you get charged another $5 immediately. With an AussieRoam eSIM, you buy a total data package (e.g., 10GB or 20GB) and use it however you like over 15 or 30 days. There are no daily resets to worry about and no surprise charges on your next monthly bill.## Local Networks vs. Roaming PartnersWhen you use Optus roaming, your phone is essentially a guest on a foreign network. Optus has agreements with specific carriers, but you aren't always prioritized. If that specific partner has a dead zone in a rural part of Japan or a remote beach in Thailand, your phone might struggle to find a signal even if other networks are booming.Travel eSIMs work differently. They are designed to hook into local infrastructure directly. For example, in Indonesia, you want to be on Telkomsel or Indosat for the best coverage. In the United Kingdom, you want to be switching between EE and O2. Because AussieRoam plans are data-only, they focus entirely on providing a stable, high-speed internet connection without the overhead of traditional voice roaming. Since these are data-only plans, they do not come with a local phone number, but in the age of WhatsApp, Messenger, and FaceTime, that is rarely a deal-breaker for the modern adventurer.## Comparing the Costs: A Quick Look| Feature | Optus Daily Roaming | AussieRoam Travel eSIM || :--- | :--- | :--- || Daily Cost | $5 per day (Zone 1) | One-off upfront cost || Data Limit | 5GB (resets every 24h) | Total pool (e.g., 10GB, 20GB) || Setup | Automatic or SMS opt-in | Digital download & install || Hidden Fees | Zone 2 surges | None (prepaid) || Local Number | Yes (Your AU number) | No (Data only) |## Coverage Realities: Cities vs. Rural Areas### Bali and IndonesiaIn Bali, the WiFi in villas can be notoriously flaky. We have discussed Bali Villa WiFi Problems before, and the consensus is that you need a backup. Optus roaming usually works well in Kuta and Seminyak, but if you head north to Munduk or out to the Nusa islands, roaming signals can drop. A dedicated Southeast Asia eSIM often provides more consistent pings because it is optimized for local towers.### JapanFrom the neon streets of Shinjuku to the quiet temples of Kyoto, Japan demands constant Google Maps usage. Optus roaming is reliable here, but the cost is the main deterrent. When you consider that many Japanese hotels have complex login portals for WiFi, having your own encrypted data stream is a massive advantage for Hotel WiFi vs Travel eSIM security.### Europe and the UKTraveling through Europe usually involves crossing borders. Optus roaming covers most of Europe in Zone 1, but you are still paying that $5 daily fee every single day you are away. If you are doing a 30-day Eurail trip, that is $150. A multi-country eSIM covers the same ground for a fraction of the cost, and you don't have to worry about which country's border you just crossed.## How to Install Your eSIM Before You LeaveThe best part about an eSIM is that you can sort it out while you are still sitting in the lounge at Sydney or Auckland airport. You don't need to find a kiosk at Denpasar or Heathrow while jet-lagged.### Step-by-Step for iPhone1. Go to Settings > Mobile Data.2. Tap Add eSIM.3. Scan the QR code provided by AussieRoam.4. Label the new plan as 'Travel'.5. Set your 'Primary' (Optus) line to 'On' but turn off 'Data Roaming' for that line to avoid charges.6. Set your 'Travel' line as the default for Mobile Data.### Step-by-Step for Android1. Go to Settings > Connections > SIM Manager.2. Select Add eSIM and scan your QR code.3. Once downloaded, ensure the travel eSIM is selected for 'Mobile Data'.4. Crucially, go into your home SIM settings and toggle off 'Data Roaming' so Optus doesn't trigger that $5 charge the moment you hit a foreign tower.Before you buy, make sure to check your device's compatibility to ensure your phone isn't locked to a specific carrier and supports eSIM technology. Most iPhones from the XS onwards and recent Samsung S-series phones are ready to go.## Data Needs: How Much Do You Actually Need?Stop paying for data you don't use, or worse, paying daily fees for 'unlimited' data you only use 500MB of. Here is a rough guide to daily usage:* Google Maps: 50MB–100MB per hour of active navigation.* Instagram/TikTok: 500MB–1GB per hour (video is a data killer).* WhatsApp Messaging: Negligible, unless sending videos.* Streaming Music: 100MB per hour.If you are a casual user, a 10GB plan for a two-week trip is usually plenty. If you are a heavy social media user, look at 20GB or more. You can always how to set up your eSIM and monitor your usage through your phone's settings to ensure you don't run out mid-hike.## Why Aussies and Kiwis are SwitchingThe shift away from Optus and Telstra roaming isn't just about the money—it's about control. When you use an AussieRoam eSIM, you aren't beholden to the billing cycles or 'Zone' maps of a giant telco. You get what you pay for, you land with data, and you don't come home to a bill that costs as much as your flights. Whether you are surfing in Bali or navigating the London Underground, the independence of a local data connection is a game-changer.## The bottom lineOptus Daily Roaming is a convenient but expensive luxury. For $5 a day, you get a small data slice that resets every 24 hours. A travel eSIM provides better value, more flexibility, and direct access to local networks. Ditch the daily fees, grab an eSIM before you board, and spend that saved cash on an extra round of drinks at the beach club instead.