How to enable secret codes in Samsung Galaxy S3:
The users can sets to discover various codes that can be used to activate and manipulate many settings, such as debug modes, network modes factory modes, shortcuts and everything that can be found on a phone. This tweak was also available on all previous Galaxy models, including S2
The discovered explains that the Samsung Galaxy S III uses a template for most of codes, by only accepting queries that start with ‘*#*#’ and end with ‘#*#’. Between these two marks, any kind of string can be inserted, but only some of them will actually be recognized by the phone and react. So, besides his own discoveries that are listed in full on the official page and summarized here, anyone owning the GT-I9300 and the SCH-I939 can try his luck.
Those wishing not to rely only on luck can take a more interesting approach, by installing a handful of tools and running custom, deodexed firmware images. It sounds tricky, but the user managed to put together a step by step procedure which explains the method.
List with secret codes:
Using all these elements, the Android developer found a couple interesting secrets. We have managed to extract the most noteworthy of them in the list below, but make sure you should take a backup of your device.
- 197328640 -Start Service Mode
- 2684 -Enter SM Main Menu
- 32489 -Ciphering Information
- 7284 -USB/UART I2C Mode Control
- 9090 -Diagnostic Configuration
- 22558463 -Reset Total Call Time
- 746 -Debug Dump Menu
- 0228 -Battery Status
- 22553767 -Call Drop Log View
- 6335623 -Wi-Fi Hidden Menu
- 0 -LCD Test Menu
- 4636 -User statistics and Phone Info
- 1575 -GPS Control Menu
- 34971539 -Camera Firmware Update
- 0782 -Real Time Clock Test
- 872564 -USB Logging Control
- 44336 -Software Version Info
- 7780 -Factory Reset
- 0588 -Proximity Sensor Test Mode
- 7465625 -View Phone Lock Status
Another trick discovered is setting the SubscriberID, also known as IMSI, to ‘999999999999999’, which activates a couple of test features. A SIM bearing this IMSI is called a Factory SIM and has access to certain options. Also, certain system settings can be tweaked by using string commands and advanced parameters, sent from a linked computer.
