
Multilingual support
Get help in your preferred language anytime, anywhere. No language barriers, no waiting — get simple support right when you need it.



Hello, we're koro. From activation to everyday use start more easily!
From multilingual support to instant activation, everything in one place

Get help in your preferred language anytime, anywhere. No language barriers, no waiting — get simple support right when you need it.

Receive your SIM by delivery or convenience store pickup, then activate and start using it with just a few simple steps.

Use a plan made for life in Korea without the burden, and keep your existing number.
From multilingual support to instant activation, everything in one place
Get help in your preferred language anytime, anywhere. No language barriers, no waiting — get simple support right when you need it.
Receive your SIM by delivery or convenience store pickup, then activate and start using it with just a few simple steps.
Use a plan made for life in Korea without the burden, and keep your existing number.



Based on the trust built through a telecom service already chosen by 9 million people, the USIMSA team created this new service for foreigners living in Korea. It is designed to reduce the complexity of language, activation, and pricing so anyone can use it easily and quickly.
From buying and receiving your SIM to activation, everything can be handled at once without a complicated process.
Choose a plan easily based on your data usage and budget.
Get it easily by delivery or convenience store pickup.
Activate your SIM and start using it right away.

Check the most popular plans quickly.Check the most popular plans quickly.
From buying and receiving your SIM to activation, everything can be handled easily in one place.
If mobile services in Korea feel difficult or complicated
If your current plan feels too expensive
If you want better benefits while keeping your number
If you want reliable data and dependable service
Choose the plan that fits you best and start using it right away.