In order to hard reset a Sagem MY C-1, you should perform the following steps.
Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Sagem MY C-1 device will be brought back to the default configuration of a brand new device.
1. Make sure, that your handset is on.
2. Open Menu and go to Settings, Backup & Reset and Factory Data Reset.
3. Continue to Reset Phone and Erase Everything. Done! Phone should reset and restart.