Check before you fly: will your apps work there?
Pick a country and the apps you use every day, and see which need preparing before you fly.
Last updated October 6, 2026
Many problems people hit after landing are not about signal; some apps simply behave differently in some countries. This tool shows which of yours need preparing before you fly.
Apps you use every day
4 of your 4 apps may behave differently
- TikTok — Not available over a travel planTikTok does not serve Hong Kong or Chinese addresses (Hong Kong since 2020). No travel eSIM fixes this, because the restriction is TikTok's own.
- LINE — Prepare before you flyLINE is commonly unreliable on local networks and sometimes fails even over a foreign route. Keep a backup way to reach people.
- Google Maps — Prepare before you flyWhether Google Maps loads depends on routing, and map data in China is often offset from real positions. Download offline maps and keep a local map app as backup.
- Instagram — Prepare before you flyDepends on whether the plan routes your traffic through a foreign network; nobody can guarantee it, so read the plan page.
In China, foreign apps are commonly blocked or unreliable on local networks (a Chinese SIM or hotel Wi-Fi). Some roaming-based eSIM plans route traffic through a foreign network, so these apps often open, but it depends on the plan.
See China plansThis lists widely known country-level restrictions. It is not a guarantee that an app will open on any particular plan or network; read the plan page before you buy.
How to read the result
Each status reflects widely known country-level restrictions, not a guarantee for any single plan. For China, whether foreign apps open depends on whether the plan routes traffic through a foreign network, which you need to confirm on the plan page.
Frequently asked questions
Why does an app fail when I have signal?+
Because the cause is sometimes the service's own restriction — regional limits, location checks or a verification step that needs your usual number — not the connection.
Where to go next
If this tool cannot answer your question, message us on LINE at https://lin.ee/skDPoNx, on WhatsApp at https://wa.me/message/YTADWGTLZL2VH1, or email esimonline.asia@gmail.com.