KSIM (Data Only)

Unlimited Data Prepaid SIM Card



This service requires reservation.

Unlimited Data Prepaid SIM Card

Product type : 1day / 5day / 10day / 30day

※ Please reserve the SIM cards based on length of your stay.
for 35days → 30days + 5days

※ No usage limit of Voice Talk (mVoIP)
Even if you replace the sim card, you can use your apps without change.

※ Free incoming call & text !
Outgoing call & text is NOT available.
Mobile phone authentication code receiving is NOT available.

※ If you need a mobile phone No.
Please order ☞ KSIM (Call & Data)

Please read the contents on this page carefully.

Product type

Validity : 1day = 24 hours
Pay when you Pick Up (cash or card)
Auto expiration (can NOT extend)
Sim card return is unnecessary

Product type Price
1 day ₩ 6,600
5 days ₩ 27,500
10 days ₩ 38,500
30 days ₩ 71,500

The Best Prepaid SIM in Korea
No Contract prepaid plan
Pay as you go SIM
No need to activate and terminate.
No need to return the SIM Card.
Unlimited Data & Tethering!
Enjoy Free voice talk by WhatsApp
Customer support by WhatsApp


Use your own phone with KSIM
Unlocked SIM Free device ONLY !
Contact your company to unlock.
See the!NOTICE tab for more information.

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


Outgoing Call & SMS : NOT available.
Can NOT extend the period of use.

Simple reservation!
 Submit the rental application
 After submit, confirm your email.
 Then you will receive a Reservation Completion mail.


Submit your order after flight schedule is confirmed.
Cut-off : 1day before Pick-Up, by 2pm
Please Contact ☏Support after Cut-off


To cancel or change your reservation
Please contact the reservation completion mail Reply.
Do NOT cancel without contact.
“Manner maketh man”

Local Payment (cash or card)
Please check the Location below.
It may takes about 30 mins for line waiting and SIM card setting.
Must be Prepared for Pick-Up
① Reservation Completion mail
② Passport of the booked customer
③ Payment by Card or Cash(₩)
Please ask our staff to set up KSIM

Customer Support
Business Hour:Monday ~ Saturday 09:00 ~ 18:00
Lunch Time : 12:00 ~ 13:00
+82 10-4485-7003 (WhatsApp)
☏ +82 70-7090-7007 (Korean)
☏ +82 70-7090-7008 (English/Chinese)
☏ +82 70-7090-7009 (Japanese)


Please contact us if you have any problem.
During non-office hours, will be responded on the next business day.

Always Reservation Customer FIRST !
Please make a reservation in advance.
Only reserved customers can use the mobile app customer suport (WhatsApp, KakaoTalk, LINE, Skype..)


Check your device is SIM Free !
①SIM Free device from purchase
②Device that is officially unlocked by your telecom company


What kind of device can not use ?
SIM locked by your telecom company.
Devices that do not support Korean frequencies (See the SPEC. tab)
Device that is stolen or lost in Korea.
Device is produced by LG U+ before 2014/Oct
Devices that have used other company`s SIM card in Korea before


Devices that have used other company`s SIM card in Korea before
To cancel that old SIM before using,
Please let us know the IMEI NO. of your device after Apply.
How to Find IMEI Number


When using KSIM with WiFi Router
Please check your device’s APN setting method in advance.
- APN Name : KT
- APN : lte.ktfwing.com
Please add APN of your device.
It is unnecessary any other APN items.


If your device can not use a SIM card
Please use ☞ Mobile WiFi Rental


SIM card replacement is prohibited.
After setup do not exchange the SIM card to other devices.
If you need to use several devices, please use ☞ Mobile WiFi Rental

Location of Pick-Up Place.

☆ Please read this page carefully before submit your oder ☆

☆ Submit order = agreed with all contents on this page ☆