Support Phone's acting funny

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http://androidforums.com – HEllo. I'm new here, so I figured I'd introduce myself a bit. I have the LG Optimus V from VM. Recently I dropped it while crosgsing the street and it fell apart. I put it back together and it's fine for the most part except that now the Home button doesn't work, I have to press the Back one a million times sometimes to get to my "homepage" where all my apps are. The search button doesn't work either. Also, whenever I hold down the power button to turn off the phone, I only see the Power Off selection instead of the Power Off and Airplane Mode selections like it used to be. Now if I (General)