Answer to: Logic board comparison between the s5 models.The S5 logic board is different than the S5 Active logic board.
Answer to: No softkeys after screen replacement + no lightWhat did you find out? I am currently experiencing the same issue after screen replacement on an i545 S4 Verizon.
Answer to: Different Carrier iPhone Logic Board Swap?I have been successful with this swap every time. The hardware is exactly the same.