In order to hard reset a Sagem my400X, you should perform the following steps.

Remember! Hard reset will delete all the data on your device; pictures, contacts, messages, apps and more.
Sagem my400X device will be brought back to the default configuration of a brand new device.


1. First, press and hold the Power button until the phone turns on.

2. Select Menu > Settings > Backup & Reset > Factory Data Reset.
3. Lastly, select Reset Phone > Erase Everything. Voila! Done.