Please be aware that like In the 5S, using the wrong screws in the plate that covers these connectors can damage tracks in the motherboard. If your phone no longer boots, look in the two bottom screw threads and see if you can see a visible ring where the screw has dug into the board, or any signs of copper.

If you happen to make this mistake, and are in Australia, we can repair this, as well as replace damaged FPC'S, ect. Contact me on benduffy@itzcomputers.com.au for more info on mail in repairs. If you are in other parts of the world, I can likely refer you to someone closer to your location who can help you.

I can Confirm the above. There are two known models of iphone 5S, and 5C, and here in Australia most of these devices, the two bottom screws are the shortest, the top right is non magnetic (it sits next to the compass ic), which only leaves one remaining. If you get them out of order, just remember shortest at bottom, non magnetic top right.

In saying this if you are in Australia, we can offer a mail in service to repair the damage using the wrong screws can cause. Contact me on benduffy@itzcomputers.com.au for more info on this.

If you are in other parts of the world, I know others that can also fix this that are likely closer to you.