NICE. REALLY NICE. It's my second time purchasing products from this site and I really liked both the service and the product itself. No problem overall, the explanations on the instructions leaflet that comes with the sim card are well explained and more important the staff is really kind and always available. :) The few times I needed to contact them, they were always kind and helped me resolve my problems as soon as they could. I must say I really appreciated that. Therefore I truly recommend Korea Sim.net〜The service is on point, the staff perfectly know how to deal with clients and the products are great. In addition, there are several products you can choose from depending on your needs. Thank you Korea Sim <3 감사드려요! ^^ 좋은 하루 보내시길 바랍니다〜