在国外拨打紧急电话，需要知道什么

Most travel plans are data-only and carry no ordinary voice service. Read the details of the specific plan you are buying, and ask us first if you are unsure. The safer approach is to assume it cannot place calls and keep your own voice line as the calling route.

Internet calling apps need a working connection, which an emergency may not leave you with. Some emergency systems also expect network-provided location that an app call may not supply. Treat app calling as an additional option, not the primary one.

Generally no. Removing it leaves you with no voice path at all. Keep it in the phone and switch off only that line's data and data roaming, which prevents unintended charges without cutting your calling route. Ask your own operator about call rates abroad before you go.

Use that country's official sources or government travel guidance. Avoid numbers passed on by memory or from general posts, since some countries split them by service. Once you have them, save them offline on the phone and on paper.

If it is not an emergency, find Wi-Fi and contact us with the order number, the device model and a screenshot of the cellular settings page. If it is an emergency, use whatever voice path you have or ask the people around you first. The plan can be sorted out afterwards.

It depends on the trip. If you travel alone, go to remote areas, or depend on the phone for work, a second handset with its own SIM or profile genuinely reduces single-point-of-failure risk. For a short city trip, a power bank and paper notes usually cover most of it.

We make no guarantee: it depends on the country, the attached network and the handset. Keep a separate voice route and check the destination's official information.

Both offline on the device and on paper: if the phone is lost or dead, an on-device note alone is useless.