Mobile transit card vs IC transit card 
The Mobile transit card and IC transit cardare two different services!
Mobile transit card Eligibility : This service is available for users with Android smartphones that support NFC functionality and run Android OS 6.0 or higher. (iOS is not supported.)
IC transit card Eligibility : Anyone with a Trip.PASS card can use this service.
TripPAY β Mobile Transit Card Charge (aos)
1.
The mobile transit card will be charged from the Trip PAY balance.
Please make sure that your TripPAY balance is sufficient before charging.
2.
Tap [Charge].
3.
Enter the amount you want to charge, then review and agree to the transit card terms of use.
4.
Tap [Apply for Charge].
5.
Your mobile transit card has been successfully charged!
Key points you must check!
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The charge limit is a maximum of 90,000 KRW per transaction and up to 200,000 KRW per day.
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It can be used for all transportation in Korea, including subways, buses, taxis, KTX, and more.
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Based on the age information in your passport, the fare will be automatically set to adult, youth, or student rates.
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To use the mobile transit card, please enable the NFC function on your phone and set it to basic mode.
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The amount charged to the mobile transit card cannot be transferred back to Trip PAY. However, it can be refunded to a refund account (a processing fee applies).
Please make sure to confirm the amount you want to charge before proceeding.