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This guide will show you how to replace the LCD and touch screen of your Asus Zenfone 3 Max (Model identification: ZC520TL). You may need this guide if your screen display is damaged or if your screen is cracked and you want to replace it with a new one.
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Locate the SIM card slot on the upper left side of your Asus Zenfone Max 3.
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Use the iFixit 150mm Flex Extension with the Hex 0.7 bit or the SIM card eject tool.
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Stick the tool into the hole on the SIM card slot and open the slot with it.
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Pull out the old SIM card all the way so it is no longer in the phone.
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Using an iFixit opening tool, gently wedge the tool between the phone and the back casing.
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Move the opening tool up and down to pry the back off of the device.
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Gently disconnect the gold connection cable indicated by the red circle in the corresponding picture.
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Pull back on the black adhesive tab that is adhered to the top of the battery. Tab removal is marked in the corresponding picture with a orange circle.
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Next, remove the battery by gently pulling on the blue removal tab located at the bottom of the device battery.
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Completely remove existing device battery.
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Remove the two 2.5mm Phillips #0 screws located in the upper corners of the device indicated with red circles.
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After both screws have been removed, detach the white plastic internal panel completely from the device.
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Next, remove the four 2.5mm Phillips #0 screws surrounding the motherboard component.
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Following the removal of all four screws, carefully detach the two device cables at the bottom of the motherboard component using the nylon spudger.
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Next, disconnect the remaining component cable using the same technique described in the previous step.
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Carefully grip the motherboard and gently lift and remove it from the internal device casing.
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Remove the SIM card tray fully. Refer to SIM card replacement guide for steps.
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Refer to the back cover replacement guide to remove the back cover fully.
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Refer to the battery replacement guide to remove the battery.
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Remove the four 2.5mm Phillips #0 screws at the bottom near the speaker and take the small black plastic cover off.
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Starting at the bottom, disconnect the antenna (long black wire).
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Disconnect the tan component.
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Starting from the top of the phone, disconnect the black screen flex cable (the one that is rectangular). Peel it all the way back.
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Again starting from the top of the phone, disconnect the charging port flex cable (the other black cable) and microphone button. Peel it all the way back.
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Remove the four 2.5mm Phillips #0 screws that hold the motherboard and remove the motherboard. Follow our motherboard replacement guide.
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Remove the (blue) daughterboard. The charging port flex cable will come with it.
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Be careful when removing the daughterboard. It is thin and adhered very solidly to the screen.
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Move the rubber piece (denoted with orange circles) from the old port to your new LCD assembly.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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