Stay connected during your trip in Korea! Rent a unlimited LTE data sim at USD1.99 per day. Cheapest in the town. Nationwide coverage including Busan and Jeju. Fastest 4G network. Stable all the time. U can get 1 day discount with my invite code: "TYST 2CTH" Steps to get one day free for Korean Simcard: 1. Install Yassgo app 2. Go to "Rent a Sim" 3. Fill in your arrival and departure details 4. Key in my invite code " TYST 2CTH" to get one day discount. (-- USD2). * This code is valid until my departure date on 9/9/2017. 5. Proceed to payment via PayPal/Credit card/Debit Card 6. Self collect at Incheon Airport (Seoul) upon arrival.