iPad 4 (A1458, A1459, A1460)

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Technical Description for iPad 4 (A1458, A1459, A1460)

Official Model Numbers and Identification: The iPad 4, commonly referred to as the iPad with Retina display, can be identified by its model numbers A1458, A1459, and A1460. Each model number corresponds to different connectivity options:

  • A1458: Wi-Fi only
  • A1459: Wi-Fi + Cellular (GSM)
  • A1460: Wi-Fi + Cellular (CDMA)

These model numbers are located on the back of the device, etched beneath the "iPad" logo, followed by "Designed by Apple in California" text.

Known Identification Codes:

  • Model Identifier in Software: iPad3,4 (A1458), iPad3,5 (A1459), iPad3,6 (A1460)
  • Internal Board Code: J2 (J2AP for Wi-Fi + Cellular models)

Device Identification Methods:

  1. Visual Inspection: Check the model number located on the back casing.
  2. Software Identification: Navigate to Settings > General > About, where the “Model” line will show the identifier (e.g., MD510LL/A).
  3. Connector Type: Equipped with a Lightning connector for charging and data transfer, indicative of 4th generation iPads.

Specifications:

  • Display:

    • Size: 9.7 inches
    • Type: LED-backlit IPS LCD
    • Resolution: 2048 x 1536 pixels (264 ppi)
    • Features: Retina display technology

  • Cameras:

    • Rear: 5 MP, f/2.4 aperture, autofocus
    • Front: 1.2 MP, capable of 720p HD video recording

  • Processor:

    • Chipset: Apple A6X
    • Architecture: Dual-core ARMv7-A Cortex design

  • Battery:

    • Type: Built-in rechargeable lithium-polymer
    • Capacity: 42.5 Wh
    • Expected Life: Up to 10 hours on Wi-Fi or 9 hours on cellular

  • Charging:

    • Connector: Lightning port
    • Compatibility: 12W USB power adapter

  • Memory/Storage Configurations:

    • RAM: 1 GB LPDDR2
    • Storage Options: 16 GB, 32 GB, 64 GB, 128 GB

Useful Information for Spare Parts:

  • Display assemblies require specific compatibility for connector type and size.
  • Battery replacements must conform to 43 Wh specification with proper connector formats.
  • Logic boards differ between Wi-Fi only and Wi-Fi + Cellular variants, necessitating attention to the specific model number for accurate part replacement.
  • Compatibility of cellular parts (antennas and SIM trays) should align with GSM or CDMA configurations based on model number (A1459 vs A1460).

This technical description should assist with accurately identifying, diagnosing, and repairing the iPad 4 variants by detailing essential specifications and identifiers.

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