Comparison of International Roaming Solutions: SIM Card, eSIM, WiFi De

When modern people travel abroad, whether for a short vacation or long-term work, they almost always need to stay in touch with the outside world, and the most important thing is to go online. With the advancement of technology, the ways of surfing the Internet abroad have become more diverse. Common options include traditional SIM cards , eSIM , WiFi rentals , and telecom roaming . Each option has its pros and cons, and choosing the best one for your needs and budget will impact your travel experience.

This article will compare these four overseas Internet options in depth to help you choose the one that suits you best.

	Traditional SIM card (physical SIM card)	eSIM	WiFi Rental Machine	International Roaming
introduce	When purchasing a physical SIM card in the country you are traveling to, you need to remove the card in your phone and replace it with another one.	A digital SIM card embedded in the phone, which can be installed by scanning the QR code	Portable network sharing device. Can be rented before departure or after arrival, with multi-device connectivity available	If you activate international roaming service in your home country, you can continue to use your original mobile number for calls and Internet access while abroad. Roaming charges will be charged based on the country you are in.
call	Some plans allow calls, but they are local phone numbers for tourists.	Some plans allow phone calls. Use original phone number to make calls	none	Use original phone number to make calls
advantage	You can connect to the Internet while traveling	No need to change SIM card, easy to set up, supports cross-border use, if data is insufficient, you can purchase and install it online at any time	It allows multiple devices to access the Internet at the same time, which is suitable for multiple people traveling	Directly use your existing mobile phone number, no additional equipment required
shortcoming	When traveling to multiple countries, you need to change cards frequently, and it is not cost-effective for short stays.	Not all phones support eSIM	You need to bring extra equipment and usually need to rent it in advance. You need to pay attention to the battery level of the Wi-Fi device at all times.	The cost is usually very high. Data traffic is limited
Suitable users	Travelers who need to stay in a country for a long time and want to enjoy lower local data costs.	Users who travel for long periods of time, take short trips, or frequently travel internationally, and want to easily switch Internet plans in multiple countries.	Group travel requires shared internet	People who prefer to use their original numbers directly

Japanese Internet Recommendations

Many major telecom companies offer eSIM services, such as KDDI, Softbank, NTT Docomo , no need to replace physical SIM cards, save the trouble of queuing at the airport to buy SIM cards, and enjoy fast and stable 4G or 5G networks.

Mr.eSIM>>>Click to view Japan eSIM Internet plan

Korean Internet Recommendation

Korean telecom companies such as SK Telecom and LG U+ offer eSIM services, which allow you to seamlessly connect to local networks without the hassle of changing SIM cards. Whether you are roaming the streets or need to search for restaurants and maps online, eSIM can maintain good network speed. In addition, South Korea's 5G coverage is extensive. Choosing an eSIM solution that supports 5G will allow you to enjoy ultra-high speed while visiting South Korea. network experience.

[South Korea] eSIM⎪4G high-speed Internet access｜8~20GB in total.

Mr.eSIM>>>Click to view Korean eSIM Internet plan

Southeast Asia Network Recommendations

If you want to travel to multiple countries at once, telecom operators in countries such as Thailand, Vietnam, Singapore, Malaysia, etc. already generally support eSIM, and many Thai telecom operators also provide eSIM calling services.