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Teardown difficulty:
Easy

Recommended tools

HTC Desire 400 Teardown

HTC Desire 400, Step 1/1 HTC Desire 400, Step 1/2
Step 1

Open the back cover.

HTC Desire 400, Step 2/1 HTC Desire 400, Step 2/2
Step 2

Lift and remove the battery.

HTC Desire 400, Step 3/1 HTC Desire 400, Step 3/2
Step 3

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 2 bolts and using a screwdriver (hex T5), unscrew the 4 bolts in the frame of the phone.

HTC Desire 400, Step 4/1 HTC Desire 400, Step 4/2
Step 4

Pry and remove the middle frame.

HTC Desire 400, Step 5/1
Step 5

The middle frame with buzzer (speaker).

HTC Desire 400, Step 6/1 HTC Desire 400, Step 6/2 HTC Desire 400, Step 6/3
Step 6

Disconnect connector on the PCB and pry & remove the vibration motor.

HTC Desire 400, Step 7/1 HTC Desire 400, Step 7/2
Step 7

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 2 bolts in the PCB.

HTC Desire 400, Step 8/1 HTC Desire 400, Step 8/2
Step 8

Disconnect connectors on the PCB.

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Step 9

Overturn the board, disconnect the connector from the inside and remove it.

HTC Desire 400, Step 10/1 HTC Desire 400, Step 10/2
Step 10

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 2 bolts in the lower PCB. Remove the microphone cover.

HTC Desire 400, Step 11/1 HTC Desire 400, Step 11/2 HTC Desire 400, Step 11/3
Step 11

Disconnect connectors of the inter-board cable and of the coaxial cable from inside and remove the lower PCB.

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Step 12

Disconnect connector, unstick the label and inter-board cable.

Warning!

For careful separation, we recommend using a heat gun. At the same time, it is necessary to heat carefully in order, not to damage the surface of the device.

HTC Desire 400, Step 13/1 HTC Desire 400, Step 13/2 HTC Desire 400, Step 13/3
Step 13

Parts in the frame of the display module.

Disassembly Video


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