Traduciendo paso 3
Paso 3
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Shown here are the logic board in the Wi-Fi, GSM, and CDMA models (listed from top to bottom).
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The WWAN boards on the 3G models are connected to their logic boards via surface-mounted ribbon cables.
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These cables make the WWAN board not user-replaceable, as the cables securely (and permanently) attach the WWAN board to the logic board.
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