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Denis 'GNUtoo' Carikli, 02/18/2020 12:13 AM
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.
- CellularModemPrivacyIssues:
- ModemIsolationResearch: Research on how to isolate the modem
- LocationTracking: Research on how to avoid location tracking
- SamsungGalaxyBackdoor: A backdoor found in the nonfree Samsung implementation of the samsung-ipc protocol.
- ModemProtocols
- AT
- QMI: This modem protocol is used at least in the Galaxy S 3 4G (GT-I9305) and the Galaxy Note II 4G (GT-N7105). These devices need an implementation of the QMI protocol to add support for them in Replicant.
- Samsung-ipc: This modem protocol is used in all the smartphones (and some of the tablets) supported by Replicant.
- libsamsung-ipc: The library that implements the Samsung-ipc protocol.
- libsamsung-ril: The library that interfaces libsamsung-ipc with Android.
- ModemDisable: Documentation on how to disable the modem. Currently applies to devices with the Samsung-ipc. This is needed because the flight mode doesn't disable the modem at all.
- SIMnotRecognized: A bug in libsamsung-ipc that affected Replicant 6.0, which resulted in SIM cards not being recognized.
- OtherModemProtocols: A list of other modem protocols and their implementations
TODO: This list child pages but it doesn't have any explanation of the pages
Updated by Denis 'GNUtoo' Carikli about 5 years ago · 14 revisions