If you want to use your smartphone overseas, use MNO's overseas roaming service. You can save money by using campaigns. I would like you to compare it with eSIM before traveling.
Variety of price plans covering a wide range of countries and regions [NTT Docomo]
・980 yen/day
・200 yen/1 hour・2480 yen/3 days・3980 yen/5 days・5280 yen/7 days
・Continental US→Japan……¥140/min・Continental US→Continental US……¥125/min・Continental US→Other……¥265/min・Incoming calls ¥175/min
・Sending……¥100/1・Receiving……Free
In addition to 980 yen per day, you can choose a plan that fits your budget, from 200 yen per hour to 5280 yen for 7 days in areas where Japanese people travel frequently. It can be used on an hourly basis, so it is convenient for short layovers. To use it, you need to apply in advance before traveling.
A convenient 30-day plan for long-term stays [au]
・980 yen/24 hours
・Continental US→Japan……¥140/min・Continental US→Continental US……¥120/min・Continental US→Other……¥210/min・Incoming calls ¥165/min
・Sending……¥100/1・Receiving……Free
For 980 yen per day, you can use the data capacity according to your rate plan even overseas. If you are an au STAR member, you can use it for free once a month for 24 hours, and there is a campaign in which the usage fee is free in the United States (mainland), Hawaii, Taiwan, South Korea, Hong Kong, etc. until the end of September.
A plan for iPhone users with a great trip to the United States [Softbank]
・ Free during the campaign (usually 980 yen/month)
・Continental US→Japan……Free・Continental US→Continental US……Free・Continental US →Others……¥210/minute・Incoming calls are free
・Free
・Up to about 25MB……maximum ¥1980/day・More than about 25MB……maximum ¥2980/day
・Continental US→Japan……¥140/min・Continental US→Continental US……¥125/min・Continental US→Other……¥210/min・Incoming calls ¥175/min
・Sending……¥100/1・Receiving……Free
If you are a SoftBank “iPhone” user and your destination is the United States (*), you are eligible for “America Flat-rate”. You can use "iPhone" as it is in the local area with the same feeling as in Japan. In countries other than the United States, you can use the "All-you-can-eat overseas packet service" starting at 1,980 yen/day, but it's a little more expensive.
*Includes Sprint networks in Hawaii, Puerto Rico, and the Virgin Islands (U.S. territory)
Interview / Text / Yuriko Ota