에스원 M서비스 is a mobile application designed specifically for ES One Financial customers. It provides a convenient and easy-to-use expense inquiry service. With this app, ES One Financial customers can easily access and manage their expenses.

The app requires a few essential permissions to function properly. These include access to the user's phone for the purpose of connecting calls within the app's user management menu. The app does not require any optional permissions.

ES One Financial prioritizes the user's privacy and security, and therefore requests only the minimum necessary permissions for a smooth user experience. Please note that if you are using an Android device with an operating system version below 6.0, all permissions will be considered essential and cannot be selectively granted. To properly configure access permissions, it is recommended to upgrade your device's operating system to version 6.0 or higher and reinstall the app. Additionally, if you have the app installed prior to this update, please uninstall and reinstall it to enable access permission settings.

Please note that the use of 에스원 M서비스 is restricted to ES One Financial customers who have a contractual agreement with the company. This ensures that the app is used only by authorized individuals.