Problems after screen and LCD change

[IROC Skillz]

I have an iPhone 4s (Verizon). I had recently purchased what was described as an OEM screen plus LCD after I had cracked my factory screen. After replacing the screen and LCD such features as the side volume controls, vibrate switch, and proximity switch (dimming after accepting a call) have stopped working. I double checked to see that all of the connectors were pushed on correctly and they were. Is it possible this may not be an OEM screen and causing the problem or maybe somehow the motherboard was damaged during the swap? Any help or insight is appreciated. Thank you.

 

[Thomasjtsi]

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