It is KT's unique benefit curation app service where families can enjoy various benefits together.
You can share data and membership points with family members, and you can acquire additional data through missions. Free coupon benefits that can be used by the whole family are a bonus.

[KT Family Box access rights and reasons for need]
1. Required access rights
phone (required)
Login, access to use phone number for 1:1 inquiry

2. Optional access rights
Address book (optional)
Read address book, access to access address book for inviting family members

Push notification (optional)
Access notification rights for family use information and push notifications for KT Family Box

Optional permission is agreed upon at the time necessary while using the service, and you can change the setting in 'Settings> Privacy' of your mobile phone.
Even if you do not agree to the optional access right, you can use the service except for the right.