Nexus S (I902x)¶

• Table of contents
• Nexus S (I902x)
  • Replicant status
  • Replicant installation
    • Replicant usage
  • Replicant build
  • Replicant development
  • Freedom and privacy/security issues
  • Research
    • Hardware table

	Device	Nexus S (I902x)
	Manufacturer	Google/Samsung
	Release date	December 2010
	Codename	crespo
	Status	Maintained
	Maintainer(s)	Paul Kocialkowski
	Supported models	GSM: I9020, I9020A, I9023
	Latest images	Replicant 4.2 0003

Replicant status¶

Replicant status for the Nexus S (I902x): ReplicantStatus

Replicant installation¶

Replicant installation for the Nexus S (I902x): NexusSI902xInstallation

Replicant usage¶

• Nexus S (I902x) compass calibration: NexusSI902xCompassCalibration

Replicant build¶

Replicant build for the Nexus S (I902x): NexusSI902xBuild

Replicant development¶

• Nexus S (I902x) UART: NexusSI902xUART

Freedom and privacy/security issues¶

• Proprietary hardware
• Proprietary firmwares, some of which have to be loaded by the system: NexusSI902xLoadedFirmwares
• Proprietary modem system
• Proprietary bootrom
• Proprietary and signed bootloader: NexusSI902xBootloader

Privacy/security issues on the Nexus S (I902x): NexusSI902xPrivacySecurityIssues

Research¶

Hardware table¶

Component	Name	Source	Protocol/implementation
SoC	Samsung S5PC110/S5PV210	Linux kernel	Linux kernel
GPU	PowerVR SGX540	https://secure.wikimedia.org/wikipedia/en/wiki/Exynos	Linux kernel and secret userspace
Audio Codec	WM8994	Linux kernel	Linux kernel ALSA driver
Modem	XMM6160	iFixit	Secret protocol: Samsung-IPC, implemented in libsamsung-ipc and samsung-ril
Wi-Fi	BCM4329	Linux kernel	implemented in Wi-Fi driver
Bluetooth	BCM4329	Linux kernel	implemented in Bluetooth driver
NFC	PN544	Linux kernel	Linux kernel
GPS	BCM4751	http://www.zdnet.com/photos/google-nexus-s-teardown/6189263?seq=59	MEIF, Unknown
Accelerometer	KR3DM	Linux kernel	Linux kernel, Samsung-Sensors
Compass	AKM8973	Kernel sources	Linux kernel, secret userspace
Camera	S5KA3DFX/S5K4ECGX	Linux kernel	Linux kernel, FIMC, V4l2