Why am I unable to shut off my LG Rumor 2?

All of the sudden I am unable to shut off my LG Rumour 2 phone.  When I press the "END" button, the screen goes blank and then 147* flashes across the screen. The screen goes temporarily to send "Text Message" then goes back to the main menu?




If the phone does not turn off, you can just take out the battery and then just put it back in after.



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