[Galaxy Tab  Android Development] junjlo:
I take no responsibility for any of the work or any of the codes posted i havent tested them all so use at your own risk. The codes were found on xda but ive lost track of that posting so if someone finds it id like to thank the person whom posted that aswell.

Thanks to:

BuzzFuzz

So after adding the contacts app i found in these forums i came across a nice little added joy if you will. The phone app and dialer in contacts work for samsung codes. this could be one step forward to flashing prl's and maybe even using tablet on cricket for voice and data.

Link to contact app:http://xdaforums.com/showthread.php?t=907399

Codes:

*#0*# (General Test Mode)

*#2263# (RF Band Selection)

*#9090# (Diagnostic ConfiguratioN)

*#7284# (USB I2C Mode Control)

*#872564# (USB Logging Control)

*#4238378# (GCF Configuration)

*#0283# (Audio Loopback Control)

*#1575# (GPS Control Menu)

*#3214789650# (LBS Test Mode)

*#745# (RIL Dump Menu)

*#746# (Debug Dump Menu)

*#9900# (System Dump Mode)

*#44336# (Sofware Version Info)

*#0289# (Melody Test Mode)

*#2663# (TSP / TSK firmware update)

*#03# (NAND Flash S/N)

*#0589# (Light Sensor Test Mode)

*#0588# (Proximity Sensor Test Mode)

*#273283*255*3282*# (Data Create Menu)

*#273283*255*663282*# (Data Create SD Card)

*#3282*727336*# (Data Usage Status)

*#7594# (Remap Shutdown to End Call TSK)

*#34971539# (Camera Firmware Update)

*#526# (WLAN Engineering Mode)

*#528# (WLAN Engineering Mode)

*#7412365# (Camera Firmware Menu)

or *#*#34971539#*#*

*#80# (Unknown)

*#07# (Test History)

*#3214789# (GCF Mode Status)

*#272886# (Auto Answer Selection)

*#8736364# (OTA Update Menu)

*#301279# (HSDPA/HSUPA Control Menu)

*#7353# (Quick Test Menu)

*2767*4387264636# (Sellout SMS / PCODE view)

*#7465625# (View Phone Lock Status)

*7465625*638*# (Configure Network Lock MCC/MNC)

#7465625*638*# (Insert Network Lock Keycode)

*7465625*782*# (Configure Network Lock NSP)

#7465625*782*# (Insert Partitial Network Lock Keycode)

*7465625*77*# (Insert Network Lock Keycode SP)

#7465625*77*# (Insert Operator Lock Keycode)

*7465625*27*# (Insert Network Lock Keycode NSP/CP)

#7465625*27*# (Insert Content Provider Keycode)

Secret Codes- Some of these will only work with specific firmware

*#06# (Display IMEI number)*#1234# (Display current firmware)

*#*#4636#*#* (Diagnostic and general settings mode)

*#*#7780#*#* (Factory soft reset)or *#7780#

*2767*3855# (Factory hard reset to ROM firmware default settings)

*2767*4387264636# (To display product code)

*#272*imei#* (Display/change CSC code)or *#272*HHMM#*

*#*#1472365#*#* (GPS test settings)

*#*#197328640#*#* (Service mode main menu)

*#12580*369# (SW & HW Info)

*#0228# (ADC Reading)

*#32489# (Ciphering Info)

*#232337# (Bluetooth Address)

*#232331# (Bluetooth Test Mode)

*#232338# (WLAN MAC Address)

*#232339# (WLAN Test Mode)

*#0842# (Vibra Motor Test Mode)

*#0782# (Real Time Clock Test)

*#0673# (Audio Test Mode)

*#0*# (General Test Mode)

*#2263# (RF Band Selection)

*#9090# (Diagnostic ConfiguratioN)

*#7284# (USB I2C Mode Control)

*#872564# (USB Logging Control)

*#4238378# (GCF Configuration)

*#0283# (Audio Loopback Control)

*#1575# (GPS Control Menu)

*#3214789650# (LBS Test Mode)

*#745# (RIL Dump Menu)

*#746# (Debug Dump Menu)

*#9900# (System Dump Mode)

*#44336# (Sofware Version Info)

*#0289# (Melody Test Mode)

*#2663# (TSP / TSK firmware update)

*#03# (NAND Flash S/N)

*#0589# (Light Sensor Test Mode)

*#0588# (Proximity Sensor Test Mode)

*#273283*255*3282*# (Data Create Menu)

*#273283*255*663282*# (Data Create SD Card)

*#3282*727336*# (Data Usage Status)

*#7594# (Remap Shutdown to End Call TSK)

*#34971539# (Camera Firmware Update)

*#526# (WLAN Engineering Mode)

*#528# (WLAN Engineering Mode)

*#7412365# (Camera Firmware Menu)or *#*#34971539#*#*

*#80# (Unknown)

*#07# (Test History)

*#3214789# (GCF Mode Status)

*#272886# (Auto Answer Selection)

*#8736364# (OTA Update Menu)

*#301279# (HSDPA/HSUPA Control Menu)

*#7353# (Quick Test Menu)

*2767*4387264636# (Sellout SMS / PCODE view)

*#7465625# (View Phone Lock Status)

*7465625*638*# (Configure Network Lock MCC/MNC)

#7465625*638*# (Insert Network Lock Keycode)

*7465625*782*# (Configure Network Lock NSP)

#7465625*782*# (Insert Partitial Network Lock Keycode)

*7465625*77*# (Insert Network Lock Keycode SP)

#7465625*77*# (Insert Operator Lock Keycode)

*7465625*27*# (Insert Network Lock Keycode NSP/CP)

#7465625*27*# (Insert Content Provider Keycode)