Device manager for the Samsung Z1 is a simple app that provides you with detailed information and simple usage on the notification quickpanel window. You can set usage limits for Data, Call, and Messages if you go over these. You get to also see your usage for today, this month, and also your remaining quota.
Provides: Device information, connection information, SIM information, Network information, data/call/message usage, Usage graph on quickpanel window.
You can download Device Manager for the Z1 from the Tizen Store now.