Samsung S8500 Wave hard resetYour device freezes or has fatal errors
If your device freezes or hangs, you may need to close programs or reset the device to regain functionality. If your
device is still responsive but a program is frozen, close the program using the task manager. If your device is frozen
and unresponsive, press the Volume key up and [Power/End key] simultaneously to reset the device.
Use this method to hard reset your Samsung S8500 Wave Bada OS 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 to your PC before full reset! Take out SIM card before full reset.
Menu > Settings > Reset
Reset various settings to the factory default values. Select settings to reset. You must enter your device password to
reset the settings.