iPhone 4

Technical Characteristics of iPhone 4

The iPhone 4 was released by Apple Inc. in June 2010 as the 4th generation of their flagship smartphone line. Here are its main technical specifications:

• Operating System: iOS 4, upgradable to iOS 7.1.2
• Processor: 1.0 GHz Cortex-A8
• Memory: 512 MB RAM
• Storage: 8/16/32 GB
• Display: 3.5 inch, LED-backlit IPS LCD
• Resolution: 640 x 960 pixels
• Rear Camera: 5 MP, f/2.8
• Front Camera: VGA, videocalling over Wi-Fi only
• Battery: Non-removable Li-Po 1420 mAh battery

Replacing the iPhone 4 Screen

Here are the detailed instructions to replace the iPhone 4's screen:

Tools Needed

• Phillips #00 Screwdriver
• Suction cup
• Plastic Opening Tools
• Small flathead screwdriver

Instructions

Before starting the replacement process, make sure that your smartphone is turned off.

• Remove the two Phillips #00 screws next to the dock connector.
• Push the rear panel toward the top edge of the iPhone and remove the rear panel.
• Remove the single 2.5 mm Phillips screw securing the battery to the motherboard.
• Insert a metal spudger at the edge of the battery and pry it up from the adhesive securing it to the motherboard.
• Remove the following five screws securing the Wi-Fi antenna to the motherboard:
  • One 1.6 mm Phillips screw
  • One 1.2 mm Phillips screw
  • One 1.2 mm Phillips screw
  • One 1.2 mm Phillips screw
  • One 7.2 mm Phillips screw
• Carefully lift the Wi-Fi antenna cable up to reveal a hidden 1.4 mm screw. Remove it.
• Carefully remove the Wi-Fi antenna while slowly peeling the five cables off the motherboard.
• Connect your new iPhone 4 screen to the motherboard, and reassemble the iPhone following these instructions in reverse order.

Always remember to be patient and careful, as small parts can be easily damaged.