Yes, Optus works in China. On eligible Choice Plus plans, China sits in Zone 1 at AUD$5 per day (5GB plus unlimited calls and texts); on standard postpaid it’s around AUD$10/day. Because it’s international roaming routed back through Australia, it generally lets you use Google, WhatsApp and Instagram despite the Great Firewall. The trade-off is the daily cost — a Travelren China eSIM bypasses the Firewall too and costs far less over a full trip. Honest break-even below.
Travelren sells China eSIMs, so this comparison has stakes. We’ve kept the numbers real and been straight about the Firewall — because most China connectivity pages either fearmonger or oversimplify it.
The quick answer
- Optus in China (Choice Plus): AUD$5/day, 5GB, unlimited calls + texts (Zone 1). Verify in My Optus.
- Optus in China (standard postpaid): around AUD$10/day, 1GB.
- Travelren China eSIM, 5GB / 30 days: approximately AUD$15.50, built to bypass the Firewall.
- Crossover ($5/day): eSIM cheaper from day 4 onward. ($10/day): from day 2 onward.
The Great Firewall question — what most Australians get wrong
The Great Firewall blocks Google, WhatsApp, Instagram, Facebook, YouTube and thousands of sites. What actually determines whether they work for you is how your data leaves China:
- A local Chinese SIM (airport kiosk, or a cheap local-breakout eSIM) connects you behind the Firewall. Google and WhatsApp need a VPN — which is hard to install once you’re already in China.
- Optus roaming tunnels your data back to Optus in Australia before it reaches the internet, so it usually exits outside China and the blocked apps work. It’s not formally guaranteed, but it’s the common experience on Optus roaming.
- A Travelren China eSIM is purpose-built to route internationally and bypass the Firewall — the same open access, designed for it, at a fraction of the per-day cost.
So in China the real question isn’t “will I be blocked” — with Optus or a proper China eSIM you generally won’t be. It’s how much you’ll pay for that open access.
How Optus actually works when you land in China
China runs on China Mobile, China Unicom and China Telecom. Optus roams onto one of these for the radio signal, then carries your data back internationally. Coverage is strong across Beijing, Shanghai, Guangzhou, Shenzhen, Chengdu and Xi’an, and along the high-speed rail lines — 5G in city centres, reliable 4G LTE elsewhere.
The Zone 1 day pass activates automatically on first data use, and Optus texts you the daily charge. Days you stay on hotel WiFi and trigger no mobile data aren’t charged.
Optus roaming in China — detail
- AUD$5/day on Choice Plus plans (5GB, unlimited calls + SMS), China in Zone 1
- Around AUD$10/day on standard postpaid (1GB)
- Confirm your exact rate and that China is in your zone via the My Optus app before departure
- Prepaid customers: separate roaming packs apply — check the Optus site
What an eSIM costs for the same China trip
Travelren China plans (AUD, June 2026) — all route internationally and bypass the Firewall:
- 1GB / 7 days: approximately AUD$4
- 3GB / 30 days: approximately AUD$10.50
- 5GB / 30 days: approximately AUD$15.50 — best value for 1–2 weeks
- 10GB / 30 days: approximately AUD$26.50
- Unlimited / 7 days: approximately AUD$27
Visiting Hong Kong or Macau too? They’re outside the Firewall on separate networks — our Asia eSIM covers mainland China plus 17 countries on one plan. See all China options.
Break-even math
| Trip length | Optus $5/day (Choice Plus) | Travelren 5GB / 30 days | Cheaper option |
|---|---|---|---|
| 1 day (Shanghai stopover) | AUD$5 | AUD$15.50 | Optus cheaper by $10.50 |
| 3 days (Beijing weekend) | AUD$15 | AUD$15.50 | Line-ball — Optus by 50c |
| 1 week | AUD$35 | AUD$15.50 | eSIM saves AUD$19.50 |
| 10 days (Beijing–Xi’an–Shanghai) | AUD$50 | AUD$15.50 | eSIM saves AUD$34.50 |
| 2 weeks (China circuit) | AUD$70 | AUD$26.50 (10GB) | eSIM saves AUD$43.50 |
On the cheaper Choice Plus rate, Optus is genuinely competitive for short trips — the eSIM only pulls clearly ahead from about a week. On the $10/day standard rate, the eSIM wins from day two. Check which rate you’re on before deciding.
When staying on Optus roaming is the right call in China
- Short trips on the $5/day Choice Plus rate — for 1–3 days it’s competitive and effortless
- You need your Aussie number live — bank 2FA, work calls. Single-SIM phones run one line only; Optus keeps your number on (dual-SIM phones run the eSIM alongside it)
- Lots of standard voice calls — the day pass includes unlimited calls; the eSIM is data-only
- You don’t want to configure anything — the day pass auto-activates
Will your phone work?
Almost certainly — iPhone XS+ (2018+), Pixel 3+, Galaxy S20+ all support eSIM. China-specific exception: iPhones bought in mainland China lack eSIM hardware even when the model number matches an Australian one. If yours was bought in China, you’ll need roaming or a physical SIM. Check the full list on our device check page.
Set up before you fly. App stores are restricted in China, so install and activate everything at home — your eSIM connects automatically on arrival.
Common questions
Do I still need a VPN with a China eSIM?
No. An international-routing China eSIM like ours already opens Google, WhatsApp and Instagram without a separate VPN. You skip installing (and paying for) a VPN that may not work once you’re behind the Firewall.
Is China definitely in Optus Zone 1?
China is included in Optus’s main roaming zone for most eligible plans, but zones and inclusions change — open the My Optus app and confirm your specific entitlement and daily rate before you fly. That’s the only way to know your exact cost.
Can’t I just buy a SIM at the airport in China?
A local Chinese SIM sits behind the Firewall, so Google and WhatsApp won’t work without a pre-installed VPN, and it requires passport registration. An international-routing eSIM avoids both.
Will iMessage and WhatsApp keep working?
Yes, on an international-routing eSIM or on Optus roaming. They’re tied to your number registration, not the local carrier, so they work on your Australian number as long as your data exits outside China.
The bottom line
On the $5/day Choice Plus rate, Optus is a fair option for short China trips. But from about a week — and from day two on the $10/day rate — a China eSIM is clearly cheaper, and it bypasses the Great Firewall just as reliably, by design. Ten days: roughly AUD$15.50 on an eSIM versus AUD$50 on Optus.
See the full Travelren China eSIM range →