touch flo not working after turned on this morning

[mammcdonald]

i turned my phone on after it booted up for the little while i look down and the today screen is just back ground and start at top and battery bar what happened how do i fix i went in to look at contacts and they are all gone help. the unit know comes on and starts the device management and says hands free activation contacting network it runs then it says that it must restart unit and does it it just keeps doing this. HELP pleaseeeeeee