Weirdest hardware problem

[baSS4]

Hi guys, new over here, hope you can help me.

My iphone 4 has a weird problem,
if i move it violently, or if it hits something, it shuts off, and wont reboot until i slap it gently.
battery is new.

also, if i dont slap it and i try to connect it to the charger, it gets stuck on apple logo.

can someone help me figure out the problem myself?

tnx alot

 

[willerz2]

Make sure that the battery is grounded and all parts are intact and firmly in place.