March 11th, 2017
my number 01030521364. I would like to maintain this number. If there is a way to extend sim validity or change to new sim and maintain the same number? I work in korea until 2021. My Alien registraion card valid until 27 Jan 2021.  You can email me firstname.lastname@example.org Thank you.
If you have an Alien Registration card, you need to buy a Gong usim at Olleh plaza.
And send us the form for ownership change and copy of passport, copy of back & forth of ARC.
Then we will register it from your passport to ARC.
Is your email address email@example.com?
I will send you a form for ownership change.