Try plugging in your old chargers into the I4 with the case on. Ain't gonna happen. To remedy, I tried two things. Enlarging the plug cavity with an Exacto knife. What's easier is just tapering the plug. Carefully whittle down the square edges and it will be just enough for the pins to connect. Not a good hold so be careful when laying the phone down or trying to use it with cord connected. Happy I4ing.