Introduction
For the official iFixit guide, click here. The guide you are viewing is retained for historical purposes only.
How to disassemble an iPhone 5S and to change / replace the touch screen digitizer glass & LCD display assembly.
Tools
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            Turn off the phone. 
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            If the touch screen is not working, press and hold the home button and the power button for 5 seconds. 
 
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            With a pentalobe screwdriver remove the two security screws near to the charging connector. 
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            Put the suction cup on the glass and with a cutter carefully lift a little the glass to make a room for the plastic tool. 
 
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            The display flex cable connectors bracket is secured by four Phillips screws. 
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            Remove them and the remove the bracket. 
 
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            Disconnect: 
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            The front camera flex cable 
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            The LCD flex cable 
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            The touch screen flex 
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            Now you can remove the display assembly. 
 
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            From the old spare part we have to remove and install to the new spare part: 
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            Home button assembly 
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            Earpiece 
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            Front camera and proximity sensor flex cable 
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            LCD shield 
 
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            Remove the 3x Phillips screws. 
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            Remove the metal bracket. 
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            Use a plastic tool and gently separate the Home button assembly. 
 
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            The LCD shield is secured by 5x Philleips screws. 
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            This is the final part that we have to remove from the old display assembly. 
 
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            Start with reassembling: 
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            Install the LCD shield with 5x Phillips screws 
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            Install the front camera flex and the earpiece with the bracket with two fillips screws (the screws are different). 
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            Install the home button assembly - metal bracket and 3x Phillips screws 
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            Connect the display assembly flex cables and install the bracket with 4x Phillips screws 
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            Connect the battery and install the bracket with two Phillips screws 
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            Connect the home button flex and put the small bracket up on it 
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            Close the display assembly and and secure it with the two penatalobe screws 
 
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To reassemble your device, follow these instructions in reverse order.
2 comments
The display flex cable connectors bracket is secured by four Phillips screws, but they are diferent and i had read that, if you put in different place , you can make a damaged in the motherboard. Please said how is the right place for any of them, becouse i changed the lcd and appears 5 lines and dont work the digitaizer there. i was trying to cleaning the connectors and still same way.
maxi -
you fail to show how you replaced the glass screen that was cracked.