I ordered a blue sim card for my mum (in her 70’s) to pick up at the Incheon airport. I was concerned though that she would not know how to replace the sim. But the time she arrives at the airport is 9pm, outside their office hours, so I thought she couldn’t get help around that time.So I asked a staff via facebook messenger if they have a retail store for her to visit another day and get assistance. The staff then considered and arranged with SevenEleven (a 24-hr convenience store where the sim card to be picked up by mum) and helped replacing the sim on her phone.Mum was really happy that her phone with the new sim was working well and especially with the staff who were so kind to help her. Thank you so much for offering this service outside your office hours! Really appreciate it.