よくある質問
From choosing a phone to fixing a connection abroad. Step-by-step installation instructions, screen by screen, are in the setup guide.
What exactly is an eSIM?
A SIM card that is downloaded instead of posted. Your phone stores the profile internally, so there is no plastic card to collect, swap or lose — and nothing to return when your trip ends.
自分のスマホでeSIMは使えますか？
2019年以降に発売された機種の多くがeSIMに対応しています（iPhone XS 以降、Google Pixel 3 以降、近年の Samsung Galaxy の上位機種など）。*#06# に発信して EID の番号が表示されれば対応機種です。あわせて、SIMロックが解除されている必要があります。
Do I have to take my own SIM card out?
No. The eSIM is added alongside the SIM you already use, and you choose which line carries data. Nothing is removed, so there is no card to keep safe and nothing to put back when you get home.
I am flying today — will it arrive in time?
Yes. Orders placed on this site are delivered by email within minutes, day or night, and installing takes about two more. Amazon orders need to be redeemed first, which usually takes about five minutes once Amazon has confirmed the payment.
eSIMはいつ入れておけばよいですか？
出発前にご自宅のWi-Fiでインストールし、eSIM回線はオフのままにしておいてください。オンにするのは現地に着いてからです。有効期間はインストール時ではなく、最初に接続した時点から始まります。
Amazonで買った分はどう引き換えますか？
引き換えページで、Amazonの注文番号（「注文履歴」で確認できます）と、QRコードの送付先メールアドレスをご入力ください。5分ほどで届きます。
My phone says the eSIM could not be activated.
That message is expected before you travel: the profile cannot reach its network until you are in the destination. Look at Settings › Cellular (Android: SIM manager) instead — if the plan is listed there, installation worked and it will activate on arrival.
It has been stuck on “Activating” for hours.
Also normal when you install ahead of a trip. The profile is waiting for a network it cannot see yet, and it clears once you land. You do not need to reinstall — reinstalling is what usually causes real problems.
I get “not compatible” or “already in use”.
Either the phone is still locked to a carrier, or this QR code has already been installed once. Check your list of lines first. If the phone is locked, only the carrier that sold it can unlock it — we cannot.
My iPhone asks what kind of plan this is, or to label the lines.
Any label is fine — it is just a name on your screen. Call it SIMLESS or Travel so you can find it later. When asked which line to use for calls, messages and data, keep your usual line for now and switch data to SIMLESS after you land.
I switched the line on before leaving home. Did I waste my plan?
No. The plan starts on the first connection in your destination, so switching the line on at home does not consume anything — your phone simply cannot find that network yet.
How are the days of my plan counted?
From the first connection abroad. Most plans count a day as a full 24 hours from that moment; some count calendar days that end at 23:59 in the plan’s own time zone. The email that delivered your eSIM states which rule applies to the plan you bought.
通話とSMSは今の番号のまま使えますか？
はい。通話とSMSはお手持ちのSIM（または元のeSIM）のまま、データ通信だけをSIMLESSのeSIMが担当します。料金がかからないよう、元の回線のデータローミングはオフにしてください。
Do the regional plans really work in every country listed?
Yes — one profile covers the whole region, and your phone switches operator as you cross borders. If it does not pick a network up after an hour in a new country, open Network Selection, turn Automatic off and choose an operator by hand.
How fast is it? Do you throttle?
You get the same 4G/5G networks local customers use, at local speeds, wherever 5G is available on that plan. We do not throttle. Speeds still vary with coverage, crowding and your phone, exactly as they would on a local SIM.
The connection keeps dropping.
Restart the phone, then toggle airplane mode on and off. If that does not settle it, select the operator manually under Network Selection. Do not delete the eSIM — contact us from Wi-Fi and we will work it out with you.
パソコンにテザリングできますか？
はい。すべてのプランでテザリング（インターネット共有）を追加料金なしでご利用いただけます。
データを使い切るとどうなりますか？
通信が止まるだけで、超過料金は一切かかりません。足りなければ、数分で新しいプランを購入してインストールできます。
When can I delete the eSIM from my phone?
Once the plan has expired and you are home. Deleting is permanent — the same QR code cannot be installed again — so keep it while you are still travelling, even if something is not working.
現地でつながらなかったら？
いつでもご連絡ください。365日対応の英語サポートが応じ、多くはチャット1回で解決します。それでもつながらない場合は全額返金します。
返金はできますか？
未使用・未開通のeSIMは、ご購入から30日以内であれば全額返金いたします。一度ネットワークに接続したeSIMは、技術的な不具合が確認された場合を除き、返金の対象外となります。