Monthly Mobile Plan

unlimited mobile cell phone plan in korea 1280
unlimited mobile cell phone plan in korea


Bring Your Own Device (BYOD) Plan
The Best Contract-Free Plan in Korea

Must be Prepared to Contract
Alien registration card
A bankbook opened in Korea by your alien registration card

Available only to the over 19s

Available only in Myeong-dong office.

If you stay in Korea for the time being,
please use first KSIM (Data Only) or KSIM (Call & Data)

‘All-In’ Unlimited ₩45,900

Tax excluded
It will be paid by automatic bank transfer.

Voice Call


Text Message



Unlimited 4G LTE

Initial Cost

Available only pay by cash.

SIM card price ₩ 8,800
Activation fee ₩ 22,000

The Best Mobile Cell Phone Plan in Korea
Unlimited talk, text & data
No annual contract.


Bring Your Own (BYO) Phone
Unlocked SIM Free Smartphone ONLY !
Contact your telecom company to unlock.
See the!NOTICE tab for more information.
If you do not have a SIM Free phone,
you can rent or buy it in Hongdae.

4G Bands (FDD-LTE)
Main:LTE 1800Mhz (Band3)
Sub:LTE 2100 (B1), LTE 900 (B8)
3G Band (WCDMA / UMTS)
★Devices that do not support LTE frequencies : 3G ONLY
★Dedicated device (CDMA or TD-SCDMA) : Can NOT use in Korea

How to Contract
Please come to Hongdae office during business hours.
It may takes about 30~60 mins.
Business Hour:Monday ~ Saturday 09:00 ~ 18:00
Lunch Time : 12:00 ~ 13:00
Can NOT contract anywhere else.
It is hard to come to Hongdae office,
use KSIM (Data Only) or KSIM (Call & Data) for a while.


Must be Prepared to contract
① Alien registration card
② A bankbook opened by your alien registration card
③ Initial Cost (Cash)

How to Terminate
Available only in Hongdae office.
Business Hour:Monday ~ Saturday 09:00 ~ 18:00
Lunch Time : 12:00 ~ 13:00
Must be Prepared your alien registration card.
Can NOT terminate your contract anywhere else.

Customer Support
Business Hour:Monday ~ Saturday 09:00 ~ 18:00
Lunch Time : 12:00 ~ 13:00
We do not ask questions about the contents on this page.
During non-office hours, will be responded on the next business day.
+82 10-4485-7003 ( WhatsApp,LINE,Kakao..)
114 (by your phone)


Phone breakage, breakdown
You should contact manufacturer directly.

Device change
After contract if you need to change your phone, please come to Hongdae office.


Check your device is available
①SIM Free device from purchase.
②Device that already confirmed unlock service by your telecom company.


What kind of device can not use
Device is locked by your telecom company.
Devices that do not support our frequencies.
Device that is registered by other prepaid SIM Card or stolen or lost in Korea.
Device is produced by LG U+ before 2014/Oct


Devices that have used other SIM card in Korea
To cancel that old number before contract,
Please contact ☎Support within business hour.

Monday ~ Saturday・09:00 ~ 18:00
Lunch time : 12:00 ~ 13:00