The product works wonderfully and it's a good price in comparison with other sellers. When I went to pick up my order in the Hongdae branch though, some staff members were a bit rude. They had not prepared my order even though I ordered online and I had to wait longer than people who walked in without ordering online. The person serving me did not explain. Only when I asked another staff member, did she explain it had to do with the fact I already had a Korean phone number before.
It is good with my iPhone and the speed is quite well. I'm delighted with the service, at first I was confused with another plan SPEED UP PLAN[A], checked with customer CS they had expired C is the special offer for iPhone users BUT it doesn't have a hotspot function. I'm okay with that since I don't need the hotspot function, just for your reference in case you need the hotspot service please go for another choice.