The Kindle uses Amazon's trademarked
Whispernet service to wirelessly download material.
Whispernet uses Sprint's EVDO data network. The Kindle appears to have two cellular antennas--a dipole 26.5mm antenna (shown here) and an antenna built into the keypad PCB.
Before lifting the main PCB away from the Kindle's case, you need to disconnect the antenna wires from each antenna. On this antenna, the connector is on the underside and difficult to disconnect without first removing the antenna from the case.
The antenna is held to the case with small amount of adhesive. Gently pry the antenna away from the case, taking care not to break it. With the antenna free from the case, you can disconnect the wire.
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