Samsung I405 Stratosphere hard reset using buttonsPress and hold both VOLUME down and up buttons and POWER ON the phone.
Select wipe data / factory reset with Volume down button and press HOME button to hard reset Samsung I405 Stratosphere.
Samsung I405 Stratosphere hard reset via menuPersonal Data
Factory data reset
Use Factory data reset to return your phone to its factory defaults. This setting erases all data from your phone, including
your Google or other email account settings, system and application data and settings, and downloaded applications. It
will not erase current system software and bundled applications, or files stored on an installed memory card, such as music or
1. From the Home screen, press the Menu Key, then touch Settings ➔ Privacy.
2. Touch Factory data reset, then follow the prompts to perform the reset.
Clear stored credentials and reset the password.
Note: This setting only appears if you have installed encrypted certificates.
1. From the Home screen, press the Menu Key, then touch Settings ➔ Location & security.
2. Touch Clear storage to clear stored credentials and reset the password.
Use this method to hard reset your Samsung I405 Stratosphere phone: Enter *2767*3855#. Warning! All your data including contacts, messages etc. will be lost! Copy all your necessary data/Contacts/Messages etc. to SIM or make backup with SAMSUNG New PC Studio ,PC Sync on your PC before full reset!