If you’re looking to manage additional phone numbers besides your own, the 넘버플러스II app by SKTelecom might be what you need. The app is available for Android users and is free to use. It is a lifestyle app that allows you to assign additional phone numbers to use with your existing phone.

The app offers various features such as managing the additional numbers, turning them on or off, and keeping track of your service usage. With the app, you can make and receive calls and send and receive messages from your additional numbers. The app also allows you to check the status of your service usage.

It is important to note that the app only manages the additional phone numbers that you assign and does not interfere with your existing phone number or contacts. Additionally, the app requires access to your contacts, call logs, SMS, storage, and other permissions to function properly. However, the app does not support some features on Android M-OS (Marshmallow) and may not work on non-SKT phones.

Overall, 넘버플러스II is a great app for those who need to manage additional phone numbers. It is easy to use and offers a range of useful features.