Frequently Asked Questions (FAQ)

An eSIM (embedded SIM) is a digital SIM built into your smartphone. You can use mobile service by simply scanning a QR code—no need to swap a physical SIM card.

Xiao Long eSIM is available in 200+ countries and regions worldwide. Alongside single-country plans, we offer regional plans (Asia, Europe, the Middle East, South America and more) and global plans covering 118–208 countries and regions (coverage varies by plan). The exact coverage of each plan is listed on its product page. For details, please check the shop page.

We support multiple payment methods, including the world’s largest payment service, PayPal (credit card/debit card), as well as Apple Pay, Google Pay, and AURPay (various cryptocurrencies such as Bitcoin). All of these are widely recognized worldwide as safe and convenient payment options.

Right after your purchase, we’ll email you your eSIM profile (setup link/QR code). For most plans you can install the eSIM at home before you leave, and your days start counting from the moment you first connect to a network at your destination. However, the way validity starts differs by plan — for example, global plans that also cover your home country start as soon as your phone connects there, and some plans let you choose a start date at checkout. Please check the “When your plan starts” note on each product page.

You can cancel and receive a refund within 60 days of purchase, provided the eSIM has not been activated. Cancellations and refunds are not available once the eSIM has been activated.
Important exception: plans whose product page states “No cancellations or refunds after ordering” — our official local-carrier plans such as SKT (Korea), AIS (Thailand), Vodafone (Australia), Orange and T-Mobile (US) — cannot be cancelled or refunded even if unused, per the carrier’s own policy. These plans are clearly marked on their product pages, so please check before purchasing. See our Legal Notice for details.

1) Purchase a plan and receive the link to your eSIM profile (setup link/QR code, etc.). 2) Open the link, tap the setup link, or scan the QR code with your phone’s camera, then follow the prompts to add the eSIM. 3) At your destination, activate the eSIM and turn on roaming to start using it. For details, see the User Guide.

It’s a new eSIM installation method available on iOS (iPhone) 17.4 and Android 10 or later. Instead of scanning a QR code, you can automatically install the eSIM by simply tapping the link in the email. It’s easier and more reliable.

Yes, the plans we currently sell support tethering (internet sharing), so you can share your connection with multiple devices. On our unlimited plans, tethering is unlimited too — there is no “1GB per day” hotspot cap like some other unlimited eSIMs. On fixed-data and daily-capped plans, tethered data counts toward your plan’s data allowance.

Depending on your phone model, you can install multiple eSIMs and switch between them. The number of eSIMs that can be active at the same time varies by device model and the country/region it was sold in, so please check your device specifications on the official website.

On most plans, 5G is available where there is 5G coverage and your phone supports 5G. However, some plans and regions do not support 5G due to the local operator’s policy (for example, certain Singapore plans are 4G-only under local policy). Please check the product page for 5G availability. 4G/LTE is still fast enough for video streaming and video calls.

Our service primarily provides data-only eSIMs, but we also offer plans with a phone number: Europe/World (Orange), Korea (SKT), Thailand (AIS) and the US (T-Mobile). For voice calls on data-only plans, please use internet calling apps such as LINE or WhatsApp.

With the China Mainland plan, no VPN is needed—you can use services like Google and LINE as usual. In other regions, you can typically use the service without a VPN as well.

Yes — it is a true unlimited plan with no daily high-speed data cap (no FUP). Your speed stays at a comfortable 10–20Mbps at all times (excluding carrier-official plans), no matter how many GB you use — video streaming, video calls, maps and social media all run smoothly, and tethering is included with no separate cap. Most “unlimited” plans from other providers actually throttle you to 512kbps–2Mbps after 2–5GB per day (per their official terms, as of July 2026). Our Daily Unlimited Plan has no such limit. Carrier-official plans such as SKT (Korea) and T-Mobile (US) run completely unlimited at full local-network speed. Read more: Is ‘Unlimited’ eSIM Data Really Unlimited?

These plans give you a set amount of high-speed data each day, and you choose how many days you need. Once the daily high-speed allowance is used up, your connection is not cut off — you can keep browsing at a reduced speed of roughly 128 kbps to 1 Mbps (the exact speed varies by plan and is stated on the product page). That is generally enough for messaging and light web browsing. The high-speed allowance resets every 24 hours from when you start using the plan. These are FUP-type plans with a daily cap; if you would rather not worry about caps or slowdowns at all, we recommend our unlimited plans.

FUP stands for Fair Usage Policy. You get full-speed data up to a specified amount; after that you can keep using data at the speed shown as “FUP ○Mbps”. The stated speed is a theoretical maximum — actual speeds vary with signal strength and network congestion.
Note: our unlimited plans have no daily high-speed cap (no FUP). We state clearly in every plan name whether a data cap applies.

Our Japan plans run on carriers such as docomo, au or IIJ depending on the plan. In most cases no APN setup is required, but plans assigned to the IIJ network may require you to set the APN manually. If that applies to your order, we will email you the exact steps in English and Japanese after purchase.

You can check mobile data usage in your phone’s settings. You can also view your usage from the notes in your account page on our site, or via the setup link in the email > Check Usage.