Currently Being ModeratedJan 20, 2013 3:23 PM (in response to Dallasg94)
Restore iPhone with current iTunes on computer. See if better. If not, make Genius reservation or set up Service and take or send to Apple for resolution under Warranty. Until then use Assistive Touch, tap Settings App > General > Accessibility > Assistive Touch > ON > tap new white screen button > Device > Lock. This can even turn OFF iPhone, to turn ON connect to power, charger or USB of computer.