1. What to do about Wi-Fi when traveling abroad? Basic knowledge and how to choose

1.1 How do I choose an overseas Wi-Fi service?

Choosing a Wi-Fi connection when traveling abroad is an important factor that will affect the comfort of your trip. With a wide range of options available, consider the following criteria to choose the best option.

1. Consider the purpose of your trip and the circumstances of your trip
   First of all, the purpose of your trip will affect how you choose your Wi-Fi. If you plan on sightseeing or light social media use, a smaller data plan will be sufficient. On the other hand, if you plan on working or streaming videos, you will need a fast and stable Internet connection.
2. Check the communication environment at your destination
   Wi-Fi environments vary by country and region. While free Wi-Fi is widespread in urban areas, it can be difficult to connect to the Internet in rural areas or on remote islands. Also, be aware of the security risks of free Wi-Fi and prioritize safe connection methods.
3. Balancing cost and convenience
   Cost is also an important factor. For example, SIM cards can be purchased cheaply locally, but they can be a bit complicated to set up. Rental Wi-Fi routers are easy to use and can be shared by multiple people, but the cost increases with each day, so they can be expensive for long-term stays.
4. Consider compatibility with the device and ease of setup
   The ease of setting up the Wi-Fi router and SIM card also influences your choice. If you are not familiar with technology, we recommend a rental Wi-Fi router that you can use just by turning it on. Since the SIM card and eSIM must be set up in advance, you should also consider whether you can afford to spend time setting it up.

1.2 Differences in Wi-Fi situation depending on destination

Wi-Fi usage when traveling abroad varies greatly depending on your destination. It is important to understand the Wi-Fi situation in each region and choose the best method.

1. Differences between urban and rural infrastructure
   In big cities, free Wi-Fi is readily available in cafes, restaurants, hotels, etc., making it easy to connect. However, in rural areas and areas surrounding tourist destinations, the Wi-Fi environment may be unstable or there may be few available spots. In some countries, particularly in Africa and South America, Internet connection itself may be restricted, so it is necessary to research in advance.
2. Popularity of free Wi-Fi
   In some European and Asian countries, free Wi-Fi is often available in public places, but in North America and some Middle Eastern countries, free Wi-Fi may be limited. In areas where free Wi-Fi is widespread, it is possible to connect temporarily to use map and translation apps. However, there are many security concerns, so do not use a VPN or handle important data.
3. Telecommunications regulations and laws by country
   Some countries have strict communication regulations and Internet connection may be restricted. For example, many international sites are blocked in China, and there is a lot of content that cannot be accessed using normal Wi-Fi. In such cases, it is recommended to use a rental Wi-Fi router or VPN to circumvent the restrictions.
4. Convenience of SIM cards and eSIM at your destination
   Depending on your destination, you may be able to enjoy cheap, high-speed internet access by purchasing a SIM card from a local telecommunications company. In particular, in many Asian and European countries, SIM cards can be easily obtained at airports and city centers, making it convenient for short-term visitors. On the other hand, in North America and Oceania, SIM cards can be expensive and there may not be many plans for tourists.

2. Advantages and disadvantages of renting a Wi-Fi router

2.1 Basic functions of rental Wi-Fi router

Rental Wi-Fi routers are very useful devices for accessing the Internet while traveling abroad. These small pocket Wi-Fi routers provide travelers with the ability to share an Internet connection among multiple devices. Below we will explain the basic features.

1. Mobile Data
   Rental Wi-Fi routers allow you to connect to the Internet at your travel destination using the mobile data of local carriers. Since multiple devices such as smartphones, tablets, and laptops can be connected at the same time, it is very convenient for travelers who want to use multiple devices on one device or share with family and friends.
2. Stable connection and high speed communication
   Most rental Wi-Fi routers support 4G LTE or 5G, providing a fast and stable internet connection at your destination, allowing you to use map apps, stream videos, check business emails, and participate in meetings smoothly.
3. Battery life
   Most rental Wi-Fi routers are models with batteries that last from a few hours to over 10 hours. The advantage is that you don't need to charge it as often, especially when traveling for long periods of time or sightseeing outdoors. You can also use it for even longer periods of time by using a mobile battery.
4. Security Features
   Compared to public free Wi-Fi, rental Wi-Fi routers offer a more secure connection. Wi-Fi connections are password protected to prevent unauthorized access. You can also use the VPN (Virtual Private Network) function to further enhance security and protect your personal information.
5. Easy to use and configure
   Rental Wi-Fi routers are very simple to operate. Just turn them on and enter the Wi-Fi password into your smartphone or PC to connect. No special technical knowledge is required, so anyone can use them with ease.

2.2 Advantages of renting a Wi-Fi router

Renting a Wi-Fi router can bring you many benefits while traveling abroad. Here are some points to note:

1. Multiple devices can be connected at the same time
   The biggest advantage of renting a Wi-Fi router is that you can connect multiple devices, such as smartphones, tablets, and laptops, to a single router at the same time. This is very convenient when traveling with family or friends, making it easy to create an environment where everyone can use the Internet.
2. High security
   Unlike public free Wi-Fi, rental Wi-Fi routers are password protected and have a high level of connection security, making them particularly safe for use when handling personal information online or exchanging highly confidential data for work.
3. Can be used in a wide range of applications
   Rental Wi-Fi routers are available in many areas of your travel destination. The signal range is wide, not only in urban areas but also in tourist destinations and rural areas, so you can enjoy a stable Internet connection. This means you can use Google Maps and social media even while sightseeing, which is very convenient.
4. A plan with ample data capacity
   Many rental Wi-Fi services offer plans based on the amount of data you use, and if you choose an unlimited plan, you can use the service comfortably without worrying about data usage. You don't have to worry about additional charges even if you use apps that consume a lot of data, such as watching videos or making video calls.
5. Easy booking and collection
   Rental Wi-Fi routers can be easily reserved in advance online and can be picked up at the airport or at home. Since you can pick it up before you leave and use it immediately at your destination, you can smoothly secure an Internet environment without any complicated procedures.

3. Using SIM cards and eSIM

3.1 How to purchase and use a SIM card

By using a SIM card, you can easily connect to the Internet while traveling abroad. This article explains how to purchase a SIM card and how to use it.

1. How to purchase a SIM card
   When purchasing a SIM card at your destination, you can generally get one at the following locations:

• At the airport : You can purchase one at the local carrier's store or vending machines when you arrive at the airport. They often offer short-term plans for tourists and are easy to apply for.
• Shops in town : You can easily purchase local SIM cards at carrier shops and convenience stores in the city.
• Buy online : You can also buy your SIM card online in advance and have it delivered to your home before your trip. This has the advantage that you can connect to the internet as soon as you arrive.

2. How to set up your SIM card
   After purchasing a SIM card, you can use it by following the steps below.

1. Open the SIM tray on your smartphone and insert a local SIM card.
2. If necessary, change your mobile phone's APN (Access Point Name) settings to connect to the local communications network.
3. Check if you have an Internet connection and reboot if necessary.

3. Benefits of SIM cards

• Cost-effective : In many countries, SIM cards can be purchased very cheaply, making it possible to keep communication costs down during a short stay.
• Stable connection : Since it uses a local carrier, you can expect a wider range and more stable connection than Wi-Fi.

4. Disadvantages of SIM cards

• Changing your phone number : Replacing your SIM card may temporarily disable your old phone number, affecting your means of contact.
• Complex setup : Setting up the SIM card can be a hassle, especially if it requires local language settings, and it may not work if the phone is unlocked.

3.2 Advantages and disadvantages of SIM cards and eSIM

SIM cards and eSIMs each have different advantages and disadvantages, and it's important to understand the differences when choosing how to access Wi-Fi when traveling abroad. Below we compare the pros and cons of both.

1. Benefits of SIM cards

• Low cost : Many countries offer very cheap data access if you buy a SIM card locally, making it a cost-effective option for short trips or budget travelers.
• Direct use of local communication networks : SIM cards connect directly to local communication carriers, so you can generally expect stable communication. The benefits are stability of communication and wide range of connection.
• Widespread : Most smartphones support SIM cards, so you don’t need a specific smartphone model to use it.

2. Disadvantages of SIM cards

• Requires handling of physical cards : Requires the use of special pins or tools to swap SIM cards, plus the risk of losing the tiny card.
• Change of phone number : When you change your SIM card, your old phone number will be temporarily unavailable. This can be inconvenient for contacting you as you will be assigned a new number locally.
• Requires configuration : You may need to manually configure the APN and network settings, which can be a bit tedious for those who are not tech-savvy.

3. Benefits of eSIM

• Easy setup : eSIMs are quick to set up and can be set up by simply scanning a QR code, eliminating the need for a physical SIM card. They can also be purchased online in advance and used immediately upon arrival.
• Dual SIM functionality : With eSIM, you can use a physical SIM and an eSIM at the same time, allowing you to use your local phone number with your original phone number. This is a great advantage for travelers who want to keep their domestic phone number and use international data services.
• No risk of loss : Because eSIM is digital data, there is no risk of it being physically lost or damaged.

4. Disadvantages of eSIM

• Restrictions on compatible devices : eSIM is not yet compatible with all smartphones, and cannot be used on models that do not support eSIM. If you are using an older model, you should check before using it.
• Not available in some countries : eSIMs are not yet widespread in some regions, so you will need to check local availability beforehand. In particular, eSIM service may not be available in certain countries.

4. How to use free Wi-Fi safely

4.1 Convenience of free Wi-Fi and points to note

Using free Wi-Fi while traveling abroad is one of the easiest and most cost-effective ways to get around. Many tourist destinations and urban areas offer free Wi-Fi at cafes, restaurants, airports, etc., making it a very convenient option for travelers. However, there are some important points to keep in mind when using free Wi-Fi.

1. Convenience of free Wi-Fi

• Free to use : Free Wi-Fi is generally provided free of charge, and the biggest attraction is that you can connect to the Internet without worrying about data usage. It is especially ideal for short-term connections, checking maps, posting to social media, and other light Internet use.
• Ease of access : Free Wi-Fi is easily available in many places in urban areas, including hotels, airports, restaurants, cafes, shopping malls, etc. It is particularly useful for quick research or communication while sightseeing, as it is often available on public transportation and at tourist attractions.

2. Things to note when using free Wi-Fi

• Security risk : The biggest disadvantage of free Wi-Fi is its security vulnerability. Networks without passwords and unencrypted communications are at high risk of being intercepted by third parties. You should be especially careful when entering personal information such as credit card information or passwords.
• Beware of fake Wi-Fi networks : Some free Wi-Fi networks are fake Wi-Fi hotspots set up by malicious hackers. Connecting to such networks can result in your personal information being stolen, so it is important to check that the Wi-Fi network is genuine before connecting to it.
• Speed ​​and connection stability : Free Wi-Fi can slow down communication speeds and cause unstable connections when many users use it at the same time. In particular, in tourist areas and crowded places, the speed is likely to be slow, making it unsuitable for watching videos or making video calls.

3. Security measures
   When using public Wi-Fi, it is important to take some basic security measures.

• Use a VPN : When using public Wi-Fi, using a VPN (Virtual Private Network) can help encrypt your traffic and keep your personal information safe.
• Disable file sharing : Before connecting to a public Wi-Fi network, disable file sharing on your device to prevent others from accessing your device.
• Avoid important transactions : Avoid online banking or entering credit card information when using public Wi-Fi, and use trusted networks for important transactions instead.

4.2 Security measures when using free Wi-Fi

When using free Wi-Fi, there are security risks involved, so it is very important to take appropriate measures. Below, we will introduce specific security measures for using free Wi-Fi safely.

1. Using a VPN
   A VPN (Virtual Private Network) is the best security solution when using public Wi-Fi. A VPN encrypts your internet connection, greatly reducing the risk of third parties eavesdropping on your traffic. You should always use a VPN, especially when doing online banking or exchanging sensitive data.
2. Choose a reliable Wi-Fi spot
   Free Wi-Fi available in public places sometimes contains fake Wi-Fi networks set up by hackers. Connecting to these networks puts your personal information and data at risk. When connecting to Wi-Fi, always check the legitimate network name and choose an official Wi-Fi hotspot.
3. Disable file sharing
   We recommend that you turn off the file sharing feature on your device when you are connected to public Wi-Fi. If file sharing is on, other users connected to the same network may be able to access your device. Disable file sharing from the settings menu to avoid unnecessary risks.
4. Use HTTPS sites
   When accessing a website, make sure that the URL begins with "https://". This indicates that the site uses SSL (Secure Sockets Layer) encryption, making data transfer more secure. It is especially important to check for HTTPS connections on pages where you are shopping online or need to enter your password.
5. Installing security software
   When using free Wi-Fi, it is a good idea to install security software on your smartphone or PC. Security software protects your device from unauthorized access and viruses, reducing the risks when connecting to Wi-Fi. Don't forget to update your virus definitions to the latest version.
6. Disable the auto-connect feature
   Many devices have a function that automatically connects to Wi-Fi networks that have been connected to in the past, but this can increase security risks. Turning off the auto-connect function can prevent unintentional connections, especially in public free Wi-Fi networks, and improve security.

5. Use of international roaming services

5.1 Features of overseas packet flat-rate plans

One option for using the Internet while traveling abroad is the "overseas flat-rate packet plan" offered by major carriers. This is a data plan for overseas use provided by the carrier of the smartphone you normally use, and is a service that allows you to use the Internet at your travel destination for a fixed daily fee. The features are explained below.

1. Easy to use
   The biggest feature of overseas flat-rate packet plans is that they can be easily used by adding them to your regular contract plan, so there is little advance preparation required. In many cases, you don't need to purchase or set up a special SIM card before traveling; you can connect to the local network just by turning on your smartphone settings. In addition, contracts can be easily made online or via app, so they can be used even if you travel suddenly.
2. Fixed rates for peace of mind
   The big advantage of this plan is that it can be used at a fixed daily rate. For example, many plans offer a fixed amount of data for around 1,000 yen per day, so you don't have to worry about extra charges for overusing data. Prices vary by country, but with most plans, you can use the same rate system as long as your destination country is included in the list of supported countries.
3. Speed ​​and data limits
   Depending on the plan, there may be a data limit, and your communication speed may be reduced when you reach the limit. Some carriers offer unlimited plans, but your communication speed may be limited, so you should be careful when streaming videos or sending and receiving large amounts of data. Speeds may also be reduced in areas and at times with a large number of users.
4. Supported countries
   Major carriers' international flat-rate packet plans are available in many countries around the world. They often cover major tourist destinations and business cities, and you can check the list of available countries on your carrier's website. If you travel frequently, it is especially beneficial to subscribe to a plan once and use it easily from your next trip onwards.
5. No SIM card or router required
   The advantage of an overseas flat-rate data plan is that you can use your regular smartphone without having to change SIM cards or rent a Wi-Fi router. This means you can use the device you are accustomed to, so there is less hassle in operating and setting it up, and you can communicate smoothly.

6. How to choose the Wi-Fi usage method that suits you

6.1 Recommended Wi-Fi usage methods for different travel purposes

When traveling abroad, how you use Wi-Fi will vary depending on the purpose and style of your trip. By choosing the best Internet connection method for your purpose, whether it's tourism, business, or a long-term stay, you can make your trip more comfortable. Below, we will introduce recommended ways to use Wi-Fi depending on the purpose of your trip.

1. Short-term travelers whose main purpose is sightseeing
   For short trips for sightseeing purposes, data usage will not be that high, so a rental Wi-Fi router or an overseas packet flat-rate plan is convenient. In particular, when sightseeing, light use of map apps, translation apps, and social media will be the main focus, so the following options are recommended.

• Rental Wi-Fi router : If you are traveling for a short time, a rental Wi-Fi router is the best choice as you can easily pick it up at the airport or at your home. It is also convenient if you are traveling with family or friends as you can connect multiple devices at the same time.
• Overseas flat-rate data plan : This plan is ideal for those who want easy use, as it eliminates the need for any procedures when you arrive locally and allows you to use the internet on your smartphone as soon as you arrive.

2. Business Travelers
   A stable Internet connection is essential when traveling for business. A rental Wi-Fi router or eSIM is particularly useful if you need to use large amounts of data, exchange emails frequently, or attend online meetings.

• Rental Wi-Fi router : For business situations that require stable, high-speed communication, a rental Wi-Fi router with an unlimited plan that allows you to use the router without worrying about data usage is ideal. Another attractive feature is that it ensures stable communication anywhere and can be used simultaneously on multiple devices.
• eSIM : By setting it up online in advance, you can use the internet immediately after arriving, making it ideal for short business stays or sudden business trips. Recommended for those who are accustomed to using smartphones.

3. Long-term residents and digital nomads
   For digital nomads who are planning long-term stays or travelling around the world for work, it is important to make choices that take into account cost and data volume. In these cases, local SIM cards and eSIMs are economical and convenient.

• Local SIM card : If you purchase a SIM card from a local carrier in your destination country, you can use the Internet cheaply for a long period of time. In particular, if you are visiting multiple countries, purchasing a SIM card each time will help you reduce communication costs in each country.
• eSIM : You can switch between multiple countries and communication plans with one smartphone, eliminating the need to manage physical SIM cards. Ideal for digital nomads and those who travel frequently.

4. Budget-conscious backpackers and student travelers
   If you want to keep costs as low as possible while traveling, using free Wi-Fi is one way to do so. However, because it comes with security risks, it is recommended that you take measures such as using a VPN before using it.

• Free Wi-Fi : You can save on communication costs by using free Wi-Fi provided at hotels, cafes, airports, etc. However, it is important to avoid important data transactions or inputting personal information due to the risks of public Wi-Fi.

6.2 Options based on length of trip and number of people

The best way to use Wi-Fi when traveling abroad depends on the number of days you are traveling and the number of people you are traveling with. Here we will explain the best options for using Wi-Fi depending on the size of your trip.

1. For short trips (1-7 days)
   For short trips, it is important to choose a plan that is easy to arrange for Wi-Fi and is suitable for a short stay. In particular, if you plan to mainly use your device for sightseeing or social media, a plan with a low data capacity will be sufficient.

• Rental Wi-Fi router : If you're traveling for a short period of time, a rental Wi-Fi router is convenient because you can easily pick it up at the airport and start using it right away. It's perfect for trips of 1 to 7 days, as you can easily choose a plan depending on the number of days you'll be using it.
• Flat-rate overseas data plans : For those who don't want to go to any trouble, we also recommend flat-rate overseas plans from mobile carriers. You can use it from the moment you arrive at your destination, so there's no time wasted and it's convenient.

2. For long-term trips (2 weeks or more)
   When traveling for a long period of time, it is important to keep costs down, and because data usage tends to be high, a plan with ample data capacity is required.

• Local SIM card : If you purchase a SIM card locally, you can use the internet for a long period of time at a relatively low cost. If you are staying in the country for more than two weeks, a SIM card is more cost-effective.
• eSIM : If you have an eSIM-compatible smartphone, you can set it up in advance and start using the internet as soon as you arrive at your destination. Depending on the country, there are many long-term plans available, which can help you keep costs down.

3. For large groups (families/groups)
   When traveling with your family or in a group, it is convenient to have a method that allows multiple people to share the Internet. Especially when everyone needs to connect to the Internet, it is a good idea to choose a method that allows sharing while keeping individual communication costs down.

• Rental Wi-Fi routers : If you're traveling with a large group, renting a Wi-Fi router is a great option. You can connect multiple devices to one Wi-Fi router so everyone can access the internet at the same time and you can split the cost.
• SIM card sharing plan : If you are traveling in a group and each person uses a SIM card, you can use a data sharing plan to share data and reduce costs.

4. Solo and small group travel
   If you are traveling alone or with a small group, it is best to choose something that prioritizes portability and ease of use. Secure the necessary means of communication while considering cost and ease of use.

• eSIM : A simple option for solo travelers, eSIMs are incredibly convenient. Simply purchase one online in advance, set it up when you get to your destination, and you'll be instantly connected without the hassle of swapping out a physical SIM card.
• Overseas data flat-rate plans : If convenience is key, then an overseas data flat-rate plan is the way to go. It's easy to apply for and can be used as soon as you arrive, making it ideal for travelers who need a simple, short-term solution.

7. Summary

There are different options for using Wi-Fi while traveling abroad depending on the purpose and situation. For short trips, renting a Wi-Fi router or an overseas packet flat-rate plan is easy and convenient. Rental Wi-Fi is especially ideal for families and group trips because it allows multiple devices to be connected at the same time. For long-term stays or when you want to keep costs down, a local SIM card or eSIM is economical and allows you to use data communication at your destination at a low cost. While free Wi-Fi is available for free, it poses a high security risk, so measures such as a VPN are essential. By choosing a Wi-Fi method that suits the number of days and number of people traveling, you can use the Internet safely and comfortably.

Leave your overseas travel Wi-Fi needs to ACROSS Wi-Fi

Are you worried about how to connect to the Internet when traveling abroad? With ACROSS Wi-Fi , you can use Wi-Fi overseas with peace of mind, thanks to its stable, high-speed communication and easy rental procedures. Round-trip shipping is free, and data capacity is completely unlimited. You can enjoy the Internet comfortably even when traveling with family and friends. Apply now before your trip and ensure a stress-free Internet environment at your destination.

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