CellularModem¶

If you are new to modems, or to the hardware and software architecture used in smartphones and tablets, it's a good idea to start from the freedom-privacy-security-issues article .

Once this is done, there are more documentation on various aspects of the Cellular modem, from the protocol to implementations details.

• BackupTheEFS: The EFS is a partition that contains modem data like the IMEI. If that partition is lost or corrupted, the modem doesn't work anymore, so be sure to backup it.
• QMI: This modem protocol is used at least in the Galaxy S 3 4G (GT-I9305) and the Galaxy Note II 4G (GT-N7105)
  • QMI-RIL: An attempt to implement the QMI protocol. The code can initialize the modem.
  • oFono-RIL also has an implementation of the QMI protocol that can be used on Replicant. This is now the route chosen by the Replicant project.

TODO: This list child pages but it doesn't have any explanation of the pages

• BackupTheEFS
• CellularModemPrivacyIssues
  • LocationTracking
  • ModemDisable
    • ModemDisableResearch
  • ModemIsolationResearch
    • ExynosModemIsolation
  • SamsungGalaxyBackdoor
• IMEI
• ModemProtocols
  • AT
  • OtherModemProtocols
  • QMI
    • OFono-RIL
    • QMI-RIL
  • Samsung-ipc
    • Libsamsung-ipc
    • Libsamsung-ril
    • ModemFirmwarePartitions
    • SIMnotRecognized
    • XMMBoot
    • XMMProtocolInterfaces
    • XMMUpstreaming
• SamsungIpcDissector
• SIMCardDetection