need some tips for iphone 4

[prowessjen]

what will happen if u press switch button(top of the phone) and home button at the same time?

 

[draz]

The world as we know it will no longer exist... DO NOT PRESS BOTH KEYS TOGETHER!!!!





Ok seriously though... The phone will just enter a state called DFU mode, which is used to fix a broken/frozen iPhone by reinstalling the software.
There are various other Troubleshooting steps on what the combos do at different times here: http://support.apple.com/kb/TS2802