シリアのeSIM

No. We do not have a plan that works in Syria, and we will not sell you a Middle East regional plan while implying that it does. If a plan does not list Syria in its country list, the phone will not attach there. If your trip includes Syria, talk to us before you buy anything, on LINE at https://lin.ee/skDPoNx (@esimonline) or by email at esimonline.asia@gmail.com

That depends entirely on whether your home carrier still has a roaming agreement with a Syrian network, and many do not because of sanctions restrictions. Most travellers end up on a local SIM arranged by their host, which is registered against a passport and sometimes needs supporting paperwork. Ask your carrier for a written answer before you fly rather than assuming.

Yes, and do it while you are still outside the country. Download the whole country map, and save your hotel address, meeting points and your fixer's number somewhere that works offline. During the gap before you get service, and while waiting at a crossing, you will not be able to look anything up, and in some places opening a map app in front of officials is not a good idea either.

Do not photograph checkpoints, government buildings or anything military, and keep the phone in your bag as you approach one. Officers can and regularly do ask to look through a device. Let your local fixer do the talking, and read your foreign ministry's current advisory before the trip rather than relying on what someone posted last year.

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。