How to hard reset?

[Rileyjsg]

I'm using the Samsung Galaxy Wonder (i8150).

Is factory reset in settings only a 'soft' reset? I've read a little and there are different ways like holding the volume, home and power buttons to reset and *2767*3855# as well. Which ones is a 'hard' reset in that it completely leaves the phone completely new and clear all errors? Thanks.

 

[Hadron]

I don't know the handset, but a factory reset should wipe all user apps, data and settings and return the phone to its original state. That should do for most purposes.

 

[Rileyjsg]

Today my phone's volume was virtually non-existant. Things like music, clock alarm, calendar alarms, incoming sms had so low a volume that i couldn't hear anything despite the phone volume turned all e way up. I didn't even notice an alarm and sms went by until i saw the notifications. Weirdly enough, incoming calls ringtones were ok. so it should be a software problem? After a restart e volume went back to normal. Im considering a reset but dont know which would solve this error. Im worried i wld miss alerts i cldnt afford to miss. any advice?