For those considering: First Contract; Switching from another company
For current users: Change of device; Applying for a second or subsequent line

Update information

We will introduce software that can upgrade Y!mobile phones and data cards. Eligible customers should check the details and then update.

In addition to the updates we provide, we also regularly update our software. Please follow the steps below to check the latest build number for your device (the steps may vary slightly depending on the device).
"Settings" → "System" → "System Updates"
If your system is up to date, you will see the message "Your system is up to date."
As a general rule, software updates can be performed until repair acceptance ends.
Please note that we may end distribution of software updates even before the end of repair acceptance.