ベラルーシのeSIM

No. We do not have inventory for Belarus, and this page is here as travel information rather than as a product. People who need to go usually buy a local SIM in an operator's shop with their passport, or ask their home mobile provider whether roaming to Belarus is enabled on their account and what it costs. Sort it out before departure — solving it after you land is considerably harder.

Yes. SIMs there are tied to an identified customer, so you buy one in an operator's shop with your passport rather than picking up a prepaid pack and activating it yourself. Allow time for the paperwork and have the address of your accommodation ready, since it is normally part of the form. If you are unsure of the current requirements, ask your hotel or your local contact first rather than walking between shops.

That depends on your own operator and the roaming agreements they hold. Call them or check the operator app before you travel to confirm whether this destination is enabled on your line, what the per-megabyte rate is, and whether a daily roaming pass exists. If it is enabled, set a usage alert as well, because pay-as-you-go roaming charges climb faster than most people expect.

Check official sources — the embassy or consulate responsible for your country — before you buy tickets, covering the visa route, any health insurance requirement, which crossings are actually usable, and the rules on registering your stay beyond a set number of days. Do not rely on older travel blogs: this is the category of detail that changes most often and affects the trip far more directly than anything else you might research.

多くのプランは、スマホが現地のネットワークに最初に接続した時点から開始するため、自宅で事前にインストールしておき、到着後にオンにすることができます。各プランページにそれぞれのルールを記載しています。

いいえ。eSIMは2回線目として機能するため、SMS認証などには自国の番号をそのまま使えます。自国回線のローミングデータをオフにし、eSIMをデータ回線に設定してください。