If your phone is a quad-band phone, it will work in Japan and South Korea. If you have an iPhone 3G, BlackJack II, Sony Ericsson z750, HTC Fuze, LG Incite, Samsung Epix, or an AT&T Quickfire, then it will work in Japan and South Korea. If your phone is not a quad-band phone, it will not work in Japan or South Korea.
Getting started
At present, there is no known way for an AT&T phone to work in Japan. This is because the two countries have different cellular frequencies, which prevents phones from working properly without an update.
Do At&t Phones Work Internationally
AT&T offers low international long distance rates with AT&T World Connect. This means you can call people in over 190 countries and access data in over 135 countries without having to pay more for your calls or data. When traveling abroad, you can use your regular AT&T wireless number to reach people.
Does Att International Plan Work in Japan
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AT&T does not offer travel plans Outside North America for prepaid service.
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You would have to unlock your phone if eligible, and purchase service in Japan while you are out there.
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The international travel add-on only works in select European and Caribbean countries.
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AT&T does not offer service in Japan.
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The international travel add-on is not available for prepaid service.
Can You Text Internationally for Free With At&t
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You can text internationally for free with AT&T if you have one of the Mobile Share Value, Mobile Share®, or Unlimited Plan plans.
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Capabilities vary by country, so be sure to check before texting internationally.
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You can text from the U.S., Puerto Rico, and the U.S. Virgin Islands to more than 190 countries for text messages and 120 countries for picture and video messages.
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Be sure to have enough data on your phone to send and receive text and picture/video messages.
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Texting internationally can be expensive, so be sure to compare prices before you send a text or make a call.
How Do I Activate International Roaming on At&t
AT&T offers international roaming on select mobile devices. To activate international roaming, you may need to contact AT&T’s International Customer Service department. You can call them at 1-800-331-0500, dial 611 directly from your mobile device, or visit an AT&T retail store.
How Do I Setup My Iphone for International Travel
When traveling abroad, it can be helpful to disable cellular data and calling to save on your bill. To do this, open Settings on your iPhone, and then tap on Cellular. Next, tap on Cellular Data Options, and then tap on the toggle next to Data Roaming to turn it off.
How Do You Use Your Phone When Traveling Internationally
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Put your phone in airplane mode. Only use it (besides features such as the camera) hen you can connect to Wi-Fi.
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Get an international plan. Every phone carrier offers its customers international plans, which vary.
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Buy a prepaid SIM card.
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Use a Virtual Private Network (VPN). A VPN connection encrypts your data and sends it through a remote server, making it difficult for anyone, including the government, to track or spy on your activity.
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Use apps that allow you to use your phone without a network connection, such as WhatsApp and Skype.
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Use a phone booster. A phone booster will help you connect to Wi-Fi in places where it’s difficult to do so.
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Use a phone case that has a built-in antenna. This will help you connect to Wi-Fi even when there’s no signal.
What Is the Difference Between At&t International Day Pass and Passport
The main difference between an international day pass and a passport is that a passport is charged even if you don’t use it or if you can’t get service, while a day pass is limited to 10 charges per bill cycle. Additionally, a passport can only be used for travel outside the United States, while a day pass can be used for travel inside and outside the United States.
Summary
If your phone is not a quad-band phone, it will not work in Japan or South Korea.
