Galaxy S III (GT-I9300)¶

• Table of contents
• Galaxy S III (GT-I9300)
  • Replicant status
  • Replicant installation
  • Replicant usage
  • Replicant build
  • Replicant development
  • Freedom and privacy/security evaluation
  • Research
    • Hardware table
    • Software Configuration
      • PIT
      • GPT
      • Locating the PIT and MD5HDR
      • Partitions
  • Schematics
    • FCC
    • Ifixit

	Device	Galaxy S III (GT-I9300)
	Manufacturer	Samsung
	Release date	May 2012
	Replicant codename	i9300
	Status	Replicant 6.0: Maintained Replicant 10: work in progress
	Variants	GSM: GT-I9300
	Latest images	Replicant 6.0 0003

Replicant status¶

Replicant status for the Galaxy S III (GT-I9300): ReplicantStatus Replicant 6.0

Replicant 11: Work in progress

Replicant installation¶

To install Replicant on the Galaxy S III (GT-I9300), see the RecoveryInstallationWithHeimdall and MinorVersionUpgrade wiki pages.

Replicant usage¶

• Galaxy S III (GT-I9300) compass calibration: GalaxyS3I9300CompassCalibration

Replicant build¶

Replicant build for the Galaxy S III (GT-I9300): GalaxyS3I9300Build

Replicant development¶

• Galaxy S III (GT-I9300) UART: GalaxyS3I9300UART

Freedom and privacy/security evaluation¶

See GalaxyS3I9300PrivacySecurityEvaluation for more details.

Research¶

Hardware table¶

See also GT-I9300StorageSpeedTests for information about the speed of the eMMC and potential microSDs.

Software Configuration¶

PIT¶

The PIT of a 16G version of the Galaxy SIII (GT-I9300) can be found in the GalaxyS3I9300Pit page.

The PIT is a partition table used at least by the bootloader in the odin mode that Heimdal uses.

If we look at the BOTA0 partition entry in the PIT we have:

--- Entry #4 ---
Binary Type: 0 (AP)
Device Type: 2 (MMC)
Identifier: 1
Attributes: 5 (Read/Write)
Update Attributes: 1 (FOTA)
Partition Block Size/Offset: 8192
Partition Block Count: 8192
File Offset (Obsolete): 0
File Size (Obsolete): 0
Partition Name: BOTA0
Flash Filename: -
FOTA Filename: 

As for what the fields can mean:

Binary Type: 0 (AP)

Partition Block Size/Offset: 8192
Partition Block Count: 8192

Partition Name: BOTA0

Identifier: 1

For instance if we loot at BOOTLOADER we have Identifier: 80 and for TZSW we have Identifier: 81. Both partitions are located on a different hardware partition of the eMMC (which is considered like a different block device in Linux).

GPT¶

The mmcblk0 block device also has a GPT.

Locating the PIT and MD5HDR¶

See the GalaxySIIIGTI9300PartitionsResearch page for an attempt to locate the PIT and the MD5HDR partitions.

Partitions¶

¹ According to a forum thread on XDA developers "About Params: The params contains the splash screens you see when you turn your phone on and settings which control boot. These settings include UART output, kernel parmeters, and boot modes."

² For the Kib see https://en.wikipedia.org/wiki/Kibibyte

³ Foi the MiB see https://en.wikipedia.org/wiki/Mebibyte

Schematics¶

FCC¶

FCC ID: A3LGTI9300A (Grantee code: A3L, Product code: GTI9300A)
URL: https://www.fcc.gov/oet/ea/fccid/ Enter grantee, and product code and click on search.
Schematics: Block diagram operational description and schematics not made public through the FCC.

Ifixit¶

Device URL: https://www.ifixit.com/Device/Samsung_Galaxy_S_III#Section_Documents
Repair manuals and very partial schematics: https://www.ifixit.com/Device/Samsung_Galaxy_S_III#Section_Documents