KT Japan Launches TT Mobile for Korean Residents in Japan
KT Japan now allows South Korean citizens planning long-term stays in Japan to secure a local phone number before leaving Korea using only a passport and PASS app authentication. The new budget phone service, called TT Mobile, enables users to receive a SIM card in Korea and activate it upon arrival in Japan via the NTT Docomo network, ZDNet Korea reported.
Korean Users Register and Pay Before Departure
The service removes the requirement for users to complete complex Japanese-language application processes after arriving in the country. By completing the registration in Korea, users avoid the typical difficulty of securing a phone number immediately upon landing. Payments for the monthly service are processed using credit cards issued in South Korea under the user’s own name.
Plan Options for Students and Professionals
KT Japan offers two primary categories of plans based on the user’s status and data needs. Both options include a throttled data speed of up to 200Kbps once the primary data allowance is exhausted.
Data Plans for Students and Young Workers
Designed for users aged 30 and under who require higher data volumes, these plans are available in four tiers: 5GB, 10GB, 30GB, and 50GB. Monthly costs range from 1,210 yen (approximately 10,300 won) to 3,300 yen (approximately 28,100 won). Voice calls and text messages are billed separately based on actual usage.
Business Plans
Targeted at corporate expats, business travelers, and those establishing legal entities in Japan, these plans focus on high-volume communication. They are available in 10GB, 30GB, and 50GB tiers. Unlike the student plans, all business tiers include unlimited domestic calls within Japan as a standard feature.
TT Mobile Service Details
| Plan Type | Data Options | Pricing / Key Feature | Target Audience |
|---|---|---|---|
| Working Holiday/Student | 5GB, 10GB, 30GB, 50GB | 1,210 – 3,300 yen/month | Under 30s |
| Business | 10GB, 30GB, 50GB | Unlimited Domestic Calls | Expats/Entrepreneurs |
Common Questions About TT Mobile
What documents are required to sign up for TT Mobile?
Applicants only need a valid passport and the PASS simple authentication service to complete the application process before departing South Korea.
Which network does TT Mobile use in Japan?
The service operates using the NTT Docomo network, one of Japan’s largest telecommunications infrastructures.
Can I use a Korean credit card for the monthly bill?
Yes, the service allows for payment via a South Korean issued card held in the name of the subscriber.
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