Before you begin this process, make sure to back up your data, be sure the laptop is off and disconnected from its power source and all external peripherals are removed to prevent eddy static electricity. Use an anti static wrist strap or touch a grounded metal object before handling the device.
If possible work on an anti static mat or table, you'll need a small Phillips head screwdriver, a plastic scribe and a small flat head screwdriver to complete this removal. Once you've completed the previous steps, turn the system over on its closed lid and loosen the eight captive screws securing the access panel with the system turned over on its lid.
The battery is located on the bottom right hand side of the system disconnect the battery cable from the motherboard loosen the single captive screw on the right hand side of the battery, lift the battery up and away from the laptop unscrew the screw that secures the wwan card bracket to the motherboard.
Remove the card metallic bracket that secures the wwan antenna cables, disconnect the antenna cables from the connectors on the card slide and lift the card away from the connector to reinstall the Wwan card, reinsert it into the connector on the system board, connect the antenna cables to the connectors on the card.
Secure the WW A and antenna cables to the card with the bracket. Install the screw to secure the Wwan card bracket to the card and motherboard.