It’s so convenient that I can get the SIM card easily at Incheon airport by showing the receipt on mobile. The mobile signal was good and I could access to the internet anywhere in Seoul without a problem!

Easy to locate the pick up desk in the airport, easy to use, and fast connection!

Superb. Recommended.

The pickup location is really close and nice.

I have never found unlimited data service with phone number at this price but here.

Absolute solution.

Recommended.

It suddenly didn't work as soon as I used it.

I was so embarrassed that I asked for help in a Facebook message.

He asked me if I had done activation...!

Then I did STEP 3 as per the manual :)

Luckily, it was used right away 5555555

Thank you for helping me

Ifyou gonna buy a south korea sim card, here and this is the one you need :D

The internet speed is fast and the crew super helpful! And main point is There’s no issue will be left once you finish using the sim card!

Due prev visit now i had issue about to use another sim card :( but this friendly crew who cant lemme knw he or her name lols... he or she did help me on this issue... never enough to say thank you :)

And again If you gonna buy a south korea sim card, here and this definitely is the one you need :D Strongly recommended!👍🏻

Outstanding customer service. I was in the city and couldn’t get prepaid SIM from KT shop near Gangnam station. In desperation I got WiFi at nearby restaurant and found this place. I messaged them via FB messenger and got reply almost immediately (earlier today 8:30pm Korea time). The customer service rep went out of his/her way (couldn’t tell) to help me even sending me the exact location of the mini mart that sell the Prepaid SIM. The CS rep even called the mini mart to check if they have the SIM in stock! Seriously outstanding service. This CS rep solved the problem in 10 minutes what incompetent staff at said KT shop couldn’t in one hour

The Facebook message service at krsim is great.I am really impressed by the accurate and kind answers.Every time I visit Korea, I will buy it.

Great SIM and value. 10GB of unthrottled data (data can still be used after) for 15 days. To extend, just use the app and pay an extra fee.  It was the only Sim I could find that allowed top-up and had a 15 day option (instead of 10 and 30) so this was a no brainer. There's also free access to KT wifi via KR SIM customer service, which is a Lifesaver when you exceed the 10GB and want to watch videos on long train rides! Re VOIP calls, FB calls work.