Customer service
FAQ
What is eSIM?

Fast and Convenient Digital SIM

eSIM is an embedded SIM that doesn't need a simcard slot. Can easily activate it using a QR code.
Kindly check if your phone is an eSIM supported phone before purchasing.

Can I purchase eSIM prior to my trip to South Korea?

Yes, you can purchase eSIM before you arrive in South Korea.
When you arrived at the airport or hotel connect to public WiFi first before you scan the QR code to activate your eSIM.
You must activate eSIM QR code within 60 days after you received it through your email. After 60 days it will be automatically deleted and re-issuance is not possible.

Which phones support eSIM plan?

[eSIM Phone List]
Before purchasing eSIM, please check eSIM Phone List.

When I can receive the QR code after purchasing eSIM?

eSIM QR code will be send to your email within 5 minutes of payment completion.

What should I do if I didn't received an email for QR code?

Please check your spam folder first.
If it's not in your spam folder contact our customer service center.

When do I get my eSIM plan?

If you are connected to WiFi scan the QR code to activate eSIM and you can use it right away.

How to activate my eSIM?

There is 2 ways to activate eSIM.

1. Scan QR code using your camera to automatically activate it.
2. Manually activate it using the manual activation code.

Click below for detailed procedures to activate eSIM.
[How It Works]

What should I do if QR code scanning is not possible?

You can do manual activation using manual activation code.
Check the link below for [Manual Activation].
[How It Works]

Can I scan the same QR code with multiple phones?

Scanning same QR code with multiple phones is not possible.
You can only use eSIM to the phone where you activated it.

Should I turn on roaming data while using eSIM?

You can use eSIM even if you are not using roaming data.
It is recommended that you turn off your roaming data while using eSIM to prevent extra charges to your main simcard plan.

What should I do if I want to use the new activated eSIM only?

— iPhone / iOS —
Settings > Cellular

— Android —
Settings > SIM Manager

Turn off the main SIM plan and only turn on eSIM plan
If you do this you can prevent to have extra charges to your main SIM plan.

I purchased eSIM but I cannot activate, what should I do?

Please check for the following steps below first.

1. Check if your phone supports eSIM
You can check it with these 2 ways:
* Phone models like Google Pixel and Oppo do not support eSIM.
> [eSIM Phone List]
> Dial *#06# , check if there is EID

2. Network Activation
Before scanning & activate eSIM QR code make sure you are connected with WiFi.

3. Recheck QR code and Manual Activation code
Kindly verify if the QR code and manual code in your email are correct.

If you did everything but it doesn't work contact our Customer Service Center.

"Unable to Complete Cellular Plan Change" "This code is no Longer valid" "Cellular Plans From Tis Carrier Cannot be Added" What should I do if I encounter the above error message?

Please check the procedures below

 

1. Network Activation
Before scanning & activate eSIM QR code make sure you are connected with WiFi.

 

2. Recheck QR code and Manual Activation code
Kindly verify if the QR code and manual code in your email are correct.

 

3. Check if eSIM is already activated

 

— iPhone / iOS —
Settings > Cellular

 

— Android —
Settings > SIM Manager

 

If you see the KT network courier then activation has been completed.

 

If you check everything but doesn't work send the screenshot photo of your phone information (Phone model, IMEI 1 & 2 , EID , Serial Number and WiFi Mac Address) and send it to our Customer service center.

I already activated eSIM but it doesn't work

DON'T delete eSIM , restart your phone 3 to 5 times.
If it still doesn't work screenshot photo of your phone information (Phone model, IMEI 1 & 2 , EID , Serial Number and WiFi Mac Address) and send it to our Customer service center.

How to disable current eSIM?

— iPhone / iOS —
Settings > Cellular > Choose current eSIM > Line Disable

— Android —
Settings > SIM Manager > Disable current eSIM

Can I delete and reinstall my eSIM?

No. Once an eSIM has been installed it cannot be reinstalled or reissued.

If you are facing any problem about your plan DON'T DELETE your eSIM contact our Customer Service Center.
(Once you delete eSIM, reissuance or refund is NOT POSSIBLE)

Can I ask for reissuance of QR code?

Reissuance is only possible if you have a problem on the previous QR code activation, contact customer service center.
If you already activated the QR code then reissuance is NOT POSSIBLE.

After using eSIM can I ask for the refund?

No. Once you used eSIM we cannot process refund.

How can I prevent any accidental usage of International roaming?

The best way is to take out your main SIM plan while you are on your trip in South Korea.

Turn off Data Roaming or Disable the main SIM plan.

— iPhone / iOS —
Settings > Cellular > Choose the main SIM plan > Line Disable

— Android —
Settings > SIM Manager > Disable main SIM plan

How to delete eSIM plan?

— iPhone / iOS —
Settings > Cellular > Choose current eSIM > Delete eSIM

— Android —
Settings > SIM Manager > Choose current eSIM > Delete eSIM

Is eSIM pick up date is South Korea date?

Yes, choose the South Korea date for purchasing.

How can I contact BEST eSIM KOREA?

You can use the chatbot on lower right side of the website or help@bestesimkorea.com

How many eSIM I can purchase?

You can purchase up to 3 eSIM using 1 passport information.

Can I use the eSIM anywhere in Korea?

Yes you can stay connected with our eSIM anywhere in Korea!

Can I use the eSIM with smart watch or tablet?

No, you can only use it with smartphones.

Can I use hotspot / tethering?

Yes you can share your data with other device.

Can I get a korean number when I purchase eSIM?

Yes you can have your korean number.

> For DATA + Incoming Calls Only Plan you can only received messages or calls.
> For DATA + CALL & SMS Plan you can use both incoming and outgoing.

Can I purchase eSIM without passport?

No, for eSIM you must have passport.

Is real-name verification possible in Korea when I purchase the eSIM?

Our eSIM plan is not applicable for apps requiring personal verification.

Can I use calls and text if I only purchased Data Only plan?

You can only received calls and text for that plan.
If you want to use outgoing services you must purchase Data + Call & SMS plan.

I want to modify my personal information with my purchased plan.

You can contact our customer service using our chatbot or help@bestesimkorea.com

What should I do if I experience very slow speed internet?

There are some differences on speed depends on location.
Restart your phone for 3 to 5 times.

If you experience the slow speed internet continuously contact our customer service center.

BEST eSIM KOREA,
Where Expertise Meets Exceptional Support
We can quickly resolve your issues via chatbot or messenger.
Feel free to contact us anytime.
Live Agent
11:00 AM ~ 8:00 PM
Korean Time
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