URL: https://roaming.kt.com/esim/eng/reserve.asp

Browser / Version: Firefox 112.0
Operating System: Linux
Tested Another Browser: Yes Chrome

Problem type: Site is not usable
Description: Browser unsupported
Steps to Reproduce:

• Go to https://roaming.kt.com/esim/eng/reserve.asp
• Fill in form, consenting to terms of use (note that a valid email needs to be entered and checked - temporary email services work)
• Select a plan
• Click Purchase eSIM

Expected results:

• The payment popup appears and you can proceed with payment

Actual results:

• A "This browser is not supported." popup appears, preventing you from proceeding with Firefox.

Tested with Firefox release 110 and Nightly 112. KT is Korea Telecom, the second-largest wireless carrier in South Korea.

View the screenshot

View console log messages

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