Monday, June 06, 2016

Apple iPhone 4 CDMA – Disassembling procesure – How to remove the case – How to replace the Earpiece power button and other components – Mobiles and smartphones repair and service

Category: Mobiles and Smartphones Repair and Service 

Contents of this article 

  • How to remove the case 
  • How to replace the battery 
  • How to remove other components 

Apple iPhone 4 CDMA

DISASSEMBLING PROCEDURE 
Remove the two pentalobe screws on either side of the dock port connector with the iPhone 5-Point Pentalobe screwdriver.
Grip the back cover of the phone and push upward about 1/8 of an inch to remove the back cover from the iPhone 4.
You can now remove the back cover from the iPhone 4.
There is a cover over the battery connector. To disconnect the cover, locate and remove the one Phillips screw (#00) that secures it in place.
When the screw is removed, use the spudger to gently pry up the connection releasing it from the motherboard.
To remove the battery, use the plastic opening tool and the pull-tab to pry the battery out of its location. It is secured by a small amount of adhesive.
Remove the battery from the iPhone 4.
Use the spudger to gently pry the connection for the dock port out of its socket.
To begin removing the motherboard from the phone, locate and remove the two Phillips screws (#00) that secure the dock port connector cover. Peel back the dock port connector ribbon wire.
You will see a single Phillips screw (#00) that has a contact for the antenna plug attached to it. Use the screwdriver to remove the screw and contact.
When the contact is removed, use the spudger to pry the antenna out of its plug.
A metal cover for the iPhones cables and the grounding clip are held in with six Phillips screws (#00). Locate and remove the screws with the appropriate screwdriver.
When the screws are out, remove the cover from the Phone 4.
With the spudger, gently pry up on the rear-facing camera connection to unplug it from its socket.
Remove the rear-facing camera from the iPhone 4.
There are two connections that need to be disconnected. With the spudger, gently pry the connections from their sockets in the LCD and the touch screen.
The grounding clip, that was previously unscrewed, covers the connection for the Wi-Fi antenna.
Remove the cover and unplug the antenna using the spudger.
Using the spudger again, pry the front-facing camera, headphone jack and volume, and power button cables out of their sockets.
Three standoffs and two Phillips screws (#00) hold the motherboard into the iPhone 4 case. Use the small flathead screwdriver to remove the standoffs and the small Phillips screwdriver for the two screws.
With all the connections withdrawn and the securing screws removed, remove the motherboard from the iPhone 4.
To remove the speaker assembly, locate and remove the two Phillips screws (#00) that secure the speaker in the bottom of the iPhone 4 case.
With the speaker mounting screws out, peel the speaker assembly out of the iPhone 4 with the spudger. Now, remove it from the case.
To remove the dock port assembly, locate and remove the two Phillips screws (#00) with the appropriate screwdriver.
Disconnect the one ribbon wire from its socket.
Do not forget to unlock the socket before trying to extract the cable from its location. Flip the opposite side of the connection up 90 degrees to release the cable.
With all connections withdrawn and the screws removed, use the spudger to pry the dock port assembly from the iPhone 4 case.
A metal clip secures the front-facing camera. Use the spudger to pry one side of this clip to release the camera. It is now free from the assembly.
You can now remove the front facing camera from the iPhone 4.
The headphone jack has an antenna adhered to it.
Use the flat end of the spudger to pry this antenna away from the headphone jack.
There is a single Phillips screw (#00) left that secures the headphone jack. Use the small Phillips screwdriver to remove this screw.
Maneuver the headphone jack out of its housing and prepare to remove it in the follow steps.
To remove the antenna, locate and remove the one
Phillips screw (#00) in the side of the iPhone 4 case.
Locate and remove the four small Phillips screws (#00) that secure the volume buttons into the side of the iPhone 4 case.
With the headphone jack loose and the screws holding the volume buttons removed, the entire assembly can be removed from the iPhone 4.
The vibrator unit is adhered to the center of the iPhone 4 case. Use the spudger to pry the unit out and then remove it from the iPhone 4.
 There are ten Phillips screws (#00) that secure the display assembly to the iPhone 4 case. Locate and remove those screws. Now, remove the LCD and touch screen.
With the screws removed, use the plastic opening tool to pry the display assembly away from the metal case of the iPhone 4. Now, separate the display assembly and metal case from each other.
 The home button sits under the display assembly. When the display assembly is removed from the iPhone 4 case, pick the button out of its location for replacement.
The power button assembly is secured with two Phillips screws (#00). Use the appropriate screwdriver and remove the screws. Remove the power button assembly from the iPhone 4.
 The earpiece speaker is adhered to its location in the iPhone 4 case. Use the spudger to gently pry the speaker from its location.
Remove the earpiece speaker from the iPhone 4.