賢い旅行者は、高額な請求書が積み上がらないよう、ローミング料金を賢く回避する方法を知っている！でも空港のキオスクで旅行用SIMカードを買うなんて、誰がする？それはもう…1990年代の遺物だよ。
Then again, purchasing a local SIM abroad is an old yet proven way to get the job done. However, these temporary connections can often be quite expensive, and they hardly ever provide the value you might expect.
Ah, we get it. You can access public or hotel Wi-Fi, but… the convenience of having your own private network wherever you go still remains unmatched. That’s why frequent travellers have adroitly switched to prepaid international SIM cards. And why not? It’s, after all, a hassle-free move before you take off!
So, if you wish to enjoy worry-free networking abroad, you must adhere to the digital age norm — purchase a reliable travel SIM. Whether you are a routine business traveller or a vacationer hoping to avoid excessive roaming charges, you can count on us – SimCorner!
We have thus compiled this mini-guide to help you find the best global SIM card for travelling abroad in 7 proven ways you can’t miss out on! What are you holding out for? Come, let's dive in!
国際旅行用SIMカードとは何ですか？
An international SIM card, also known as a travel SIM, is a tiny portable chip, specifically a smart card containing a microchip. Unlike your regular home SIM, a region-travel SIM card lets you access local networks abroad at domestic rates.
A global SIM card is a cost-effective solution for staying connected to multiple countries simultaneously , as opposed to local SIMs, which can only be used in one country. If you intend to order one, however, you should calculate your daily data and talk time needs.
Pro Tip: Always opt for a provider who does not charge hidden fees, offers generous refunds, and is transparent about data throttling restrictions.
最高の国際旅行用SIMカードの種類
In the same vein as local chips, international SIM cards also fall into two main categories: prepaid and postpaid . Prepaid travel SIM options provide financial autonomy, allowing you to pay in advance for data, voice time, and text messaging . It resembles a similar pay-as-you-go phone from the early 2000s; you top up credit and only use what you have purchased.
On the other hand, postpaid travel SIM cards operate on a monthly billing cycle , offering higher allowances without the need for frequent top-ups. That said, you can use the services without worrying about running out of credit, as long as you pay your bill on time.
A data-only SIM, also referred to as a data SIM card, is an excellent choice for those who solely require data connectivity. Although it's ideal for messaging apps, it doesn't allow international calls without imposing roaming charges.
国際旅行用SIMカードはどのようなメリットがありますか？
Alright, it might be more tempting for you to obtain a local SIM rather than browsing for an affordable provider to order your perfect trip SIM. But hey, you know what? If you wish to blur multi-country borders freely, an international travel SIM is one of the finest solutions to consider.
And what’s more? A global SIM card is bundled with a full range of perks , an irresistible option for digital nomads and business travellers alike. Here are a few to consider-
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You can get multi-country trips for the price of one international travel SIM card – less hassle, and more enjoyment.
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Choosing the best international travel SIM card eliminates the hassle of hunting for local SIM shops separately in each country you visit.
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You can save time by not disclosing your national ID or filling out handwritten documents.
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International SIM cards are more budget-friendly than local cards since they offer lower data rates globally.
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Global SIM cards offer wider coverage because they are specifically designed for travel, leaving no space for poor connectivity!
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The best international travel SIM cards, compared to eSIMs, are widely supported by major network operators abroad and are compatible with all iOS and Android devices.
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With trip SIMs, you can use apps like Gmail, Skype, WhatsApp, and other social media platforms to send and receive messages, including voice/video calls.
Extra Perk: Setting up an international SIM card on your phone is a matter of minutes, yay!
最適な国際旅行用SIMカードを選ぶ際に考慮すべき7つのポイント
When travelling to an unfamiliar location, staying connected is essential to your safety, convenience, and staying in touch with loved ones. Undeniably, the best travel SIM can rescue you from the horror of arriving home and gripping a phone bill that is on par with the national debt. However, choosing the right provider can be a hard nut to crack.
To make an informed decision, here are the top 7 things to consider when you choose an international travel SIM. Later, we will also provide bonus considerations to help you grab the best international travel SIM card.
#1 旅行のニーズを分析する
まず最初に、ご自身の旅行の具体的な要件を理解しましょう。以下にいくつか確認すべき点を挙げます：
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Travel Duration: What’s the length of your foreign trip? Are you heading for a weekly excursion or a month-long expedition? Is it a business tour or a family outing?
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Preferred Destination(s): Is it a single destination you are visiting, or are you travelling to multiple countries at the same time? Will you also traverse continents?
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Data Usage: Are you a heavy data user, or can you sustain with 1 GB of data per month? Will you only be using a travel SIM card to check messages, or do you need internet access for GPS navigation?
These are the underlying factors that determine the best international SIM card suitable for your travelling needs.
#2 デバイスの互換性を確認してください
海外旅行の準備は整ったとしても、あなたの携帯電話の準備はできていますか？確認してみましょう：
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Unlocked Phones: Ensure your smartphone is capable of supporting global SIM cards and is “carrier unlocked.” If not, you can request your home provider to unlock your phone before departure.
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GSM Network Support: Since most international carriers utilise the GSM network, smartphones compatible with this technology perform well abroad.
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Dual SIM Capability: It’s pretty clear – if your phone supports dual SIM functionality, you can use your home SIM (let’s say for OTPs) and an international SIM card for calls/texts, or to avoid hefty roaming charges.
#3 プロバイダーの比較、プランの柔軟性、価格設定
Here’s the catch: the word ' unlimited ' in telecom jargon is often decoded with the label ' conditions apply .' Escape the trap by reflecting on the following points:
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Prefer Award-winning Providers: It is no secret that the internet nowadays is filled with fake, shady, or manipulated travel SIM reviews. Thus, always go with a company that is honoured for providing ‘positive customer service,’ just like SimCorner – a back-to-back Canstar Blue awardee.
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Plan Assortment: Mull over your preferred provider’s data plan collections to check if they provide global SIM unlimited data for both short and long trip durations.
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Affordability: Again, check if the provider offers competitive pricing or coupon codes for international travellers. Among them all, only SimCorner provides a 5% Price Beat Guarantee if you find a lower price from any international SIM provider (even if their product is on sale), which's eye-catching!
#4 ネットワークカバレッジとデータ通信速度
旅行先の地域でプロバイダーが信頼できるネットワークを提供していることを確認してください。信頼できるネットワークがなければ、プレミアムプランであっても意味がありません。それでは始めましょう：
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Rural Regions: Don’t forget to check your preferred provider's reviews or maps, which show signal strength in remote locations if you intend to travel there.
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Urban Areas: International SIM card providers offer A1 coverage in the most popular cities.
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5G Band Support (Optional): To avail faster browsing, ensure that your provider offers 4G or 5G connectivity at your destination.
#5 24時間365日のカスタマーサポートを優先する
There's no denying that reliable customer support can make or break your travel experience. If so, why not consider the facilities noted below?
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24/7 Accessibility: Does your provider offer uninterrupted assistance? Or, is it just restricted to business hours? Bear this equation in mind: Global time zones = round-the-clock needs.
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Multiple Support Channels: Ensure that you can reach customer support via email, AI chatbot, phone, or through the app.
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Human Assistance: Technically, no AI chatbot is trained enough to resolve all emergency issues. Therefore, ensure that human representatives are always available to assist you if technical difficulties arise during the global SIM card activation process.
#6 データ通信、音声通話、テキストメッセージの許容量
These allowances are critical to addressing your core communication needs while travelling abroad. To avoid feeling stranded in remote locations, verify that your international travel SIM card provider offers the following:
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Data Packages: Fair enough that your international SIM card provider offers a bundle of affordable data plans, but do they suffice your needs, given the validity period?
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Unlimited Data Allowance: Let’s say you opted for an unrestricted data plan, but are you aware of their product transparency and data throttle policy beforehand? Here’s what they don’t tell you about ‘Unlimited’ data provisions.
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Limitless Voice Calls/SMS Messaging: With this, you can alternatively rely on voice calls or SMS messaging if your daily data limit is exhausted.
#7 返金ポリシーについて
信頼できる返金ポリシーは、購入時の安全策となります。以下の条件を満たす旅行用SIMプロバイダーを選ぶことを強くお勧めします：
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A 100% Money-Back Guarantee: Yes, it's essential to know that you're not locked into something that doesn’t work for you.
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Refund Terms & Conditions: Make sure you check your trip SIM provider's terms of service – does the company offer a refund upon arrival? If yes, how soon can you claim it?
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Easy Repay Process: Who likes to deal with a complicated refund procedure? Get to know it before ordering your global SIM card.
# 特典：SimCornerの国際旅行SIMカード最安保証プラン
With SimCorner’s Price Beat Guarantee at your disposal, nothing can deter you from buying an international SIM card with confidence! Unlock the best international travel SIM card deals from SimCorner at unbeatable prices here.
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Price Lock Protection: SimCorner’s commitment to customer satisfaction goes beyond words — We'll credit you the difference if the product’s price drops within the next 30 days *.
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Flat 5% Off Price Beat Promise: This isn’t just a claim — SimCorner guarantees to beat any lower price by 5%, even if the competitor’s product is on sale. Show us a lower price you found, and we’ll offer it for 5%** less — no questions asked!
免責事項：他社最安値価格より5%割引*、かつ購入後30日以内に価格が下がった場合、差額を返金いたします。**
国際旅行用SIMカードはどこで購入できますか？
For short trips or travel across several countries, using local SIM cards can be a practical and pocket-friendly solution. However, purchasing one at each destination can be tedious. This invites a simple question: Where can I buy a global SIM card? The easiest way to purchase or order the best international travel SIM card is online through a reliable provider.
For a smooth travel experience, it’s best to order your international SIM card before departure, so it’s ready to activate upon arrival at your destination. When choosing a travel SIM provider, look for one with 24/7 human-led customer support. Like any technology, occasional issues may occur, and having access to responsive support ensures you're quickly reconnected without annoying setbacks.
国際旅行用SIMカード購入時に避けるべき間違い
Whether it’s an airport kiosk or a local mobile shop, you’ll likely compromise paying more or settling for spotty network quality — sometimes both. Here are common mistakes to tick off the list while buying the best international travel SIM card:
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Not Saving Local Emergency Contacts: It’s best to save local emergency numbers as a precaution — police, ambulance, and fire services — for your contacts before you depart. Here’s the State Department's country-wise list of emergency phone numbers abroad.
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Last-minute Orders: It's useless if your international SIM card arrives after your departure. Occasionally, issues may arise related to couriers, shipping rates, activation errors, etc. Ideally, you should order your trip SIM one or two weeks in advance.
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Not Paying Attention to the Ease of Use: Ordering a global SIM card from a popular provider doesn’t always guarantee its user-friendliness. A good rule of thumb is to ensure that you can easily monitor data usage, renew plans, and purchase top-ups directly through a dedicated mobile app, without frequently accessing the provider’s website.
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Overlooking Expiry Dates: Make sure to confirm the validity of the travel SIM before purchasing it (both the activation and the usage period). Double-check that the product is not a leftover or expired unit.
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Ignoring Reviews: Genuine customer feedback often highlights real-world issues vs. what the provider claims to support. Practically speaking, choose a network provider with a rating of at least 4.5 out of 5 in terms of reliability and performance. For example, you can rely on a trusted provider like SimCorner, which earned a 4.6/5 Trustpilot rating (as of July 2025).
SimCorner eSIM：国際旅行用SIMカードの代替手段
Dear savvy travellers, we’ve traversed the realm of conventional or international SIM cards and weighed the pros and cons of roaming abroad. Now, let’s fast-forward into the future and dive into the exciting world of eSIM technology —a sleek, modern upgrade to traditional global SIM cards.
No more waiting for shipping, no fumbling with SIM ejector pins, no small chips to misplace or damage, and seamless activation in minutes. It’s simple math: one eSIM — endless destinations or one multinational trip on two phone numbers. Yes, you can also keep your home number active while using SimCorner eSIM for international travel. Rather remarkable, isn’t it?
And we’re not stopping there — SimCorner eSIM works across 200+ destinations. All it takes is a one-and-done scan to access truly unlimited data globally. Plus, a small treat from us to you — no hidden charges, guaranteed affordable rates, and top-tier service!
SimCornerのeSIMと国際旅行用SIMカードを同時に使用できますか？
Yes, you can use SimCorner eSIM and an international SIM together if your phone supports dual SIM functionality — you can also keep your WhatsApp number! To make a purchase, visit all SimCorner’s eSIMs & SIM collection and search for your desired destination. For more, you can discover eSIM-compatible phones here to see if your device is supported.
国際旅行用SIMカード：接続への搭乗券
確かに、海外旅行用のSIMカードは、世界を駆け巡る刺激的な体験の世界を解き放ちます。そして当社の最高峰の国際旅行用SIMカードは、それに匹敵する世界——煩わしさのない、高速でグローバルなネットワーキングの世界——をお届けします！ だから、あなたの長年の疑問への答えはこうです——はい、海外旅行の際には新しい旅行用SIMカードを入手すべきです。
In the end, let’s mutually agree not to break your bank by purchasing a SimCorner travel SIM card — affordable, compatible, and reliable! Sum up the seven key ways to choose the best travel SIM we discussed in this article. This, in turn, reflects that SimCorner is a copper-bottomed international SIM card provider you can trust implicitly.
シムコーナーより、ご旅行をお楽しみください！
Get the SimCorner App – Travel Without Limits!📲
次回の海外旅行では、データ使用量を簡単に管理し、よりスマートな方法で接続を維持しましょう。
ダウンロードして、つながりを保ちましょう！
