China iPhone 15 No eSIM in Vietnam? Best Workarounds

Mainland China, Hong Kong, and Macau iPhones — including the iPhone 15 — are manufactured without eSIM hardware. This is not a software or carrier block; the physical chip is simply absent. The reason is regulatory: Chinese authorities require all phones sold in these territories to support a local eSIM standard that is different from the global one, so Apple omits the hardware entirely.

These phones rely solely on a nano-SIM card for cellular connectivity. If you try to activate a Vietnam eSIM on a China iPhone 15, you'll see an error because the device cannot read the embedded SIM data. Vietnam eSIM plans require an eSIM-compatible device. There is no workaround or hack to enable it.

All iPhone models sold in mainland China, Hong Kong, and Macau from the iPhone XS/XR generation onward lack eSIM support. This includes the iPhone 11, 12, 13, 14, and 15 series. The restriction is consistent across generations, so even the newest iPhone 15 Pro Max from China is affected.

Exception: If you bought your iPhone in the United States, European Union, Japan, South Korea, or other regions, it will have eSIM even if you are a mainland Chinese traveler. To check your device, go to Settings > General > About. Look for a section labeled 'Digital SIM' or 'eSIM'. If you don't see it, your phone does not support eSIM.

The simplest and most cost-effective solution is to buy a local physical SIM card. Vietnam's three major carriers — Viettel, Vinaphone, and Mobifone — offer prepaid tourist SIMs at airports (Noi Bai in Hanoi, Tan Son Nhat in Ho Chi Minh City) and at convenience stores nationwide. These SIMs typically cost between 100,000 and 200,000 VND, which is about $4 to $8, for 7 to 15 days with several gigabytes of data.

Your China iPhone 15 uses a single nano-SIM tray (there is no eSIM backup). Just insert the physical SIM and you're online. Data speeds are generally good on 4G networks; carriers claim 30–40 Mbps in cities, though actual performance varies by location and congestion.

If you need to keep your Chinese SIM active for calls or SMS, or if you're traveling with multiple devices, renting a pocket WiFi (portable hotspot) is a convenient option. You can rent them at airport kiosks or order online in advance for pickup. Costs are around 50,000 to 100,000 VND per day, roughly $2 to $4 per day — more expensive than a SIM, but it creates a WiFi network for up to 10 devices.

Pocket WiFi devices usually come with 4G LTE connectivity and can last a full day on a single charge. They are available from rental companies at the airport; you can return them at the end of your trip. This solution works with any phone, including your China iPhone, because it connects via WiFi, not eSIM.

If you have an old eSIM-compatible phone from another region lying around (e.g., an iPhone from the US or a Samsung Galaxy), you can use that as a hotspot. Activate a Vietnam eSIM on that device and share its internet connection with your China iPhone via personal hotspot. This way you keep your China iPhone as your primary phone.

Some travelers ship a compatible phone from abroad or borrow one from friends. It is not ideal for everyone, but it can be a temporary solution for short trips. Just note that hotspot battery drain is significant, so you'll want a power bank.