Samsung announced the SGH-D820, a quad-band slider cell phone for GSM networks. While not as thin as the SGH-D800, the SGH-D820 is also slender at just 15.2mm depth. The USP of this phone, however, lies in its wide array of multimedia functions.

The D820 comes with 73MB of internal memory, but the best part is the MicroSD slot.This is definitely good news for those looking for a D800 alternative.

The SGH-D820 also features a 2.12″ 240×320 TFT LCD capable of 262k colors. The audio player supports MP3, AAC and AAC+ (just to take a bit of your fun away, WMA support has been stripped off). But it does come with dual stereo speakers and voice recognition, pushing its weight to 103 grams. Another interesteing feature is the TV-out with this phone.

Following codes are for D500, it might work for e720/E730(though it is dependent on phones firmware).

*#1111# S/W Version
*#1234# Firmware Version
*#2222# H/W Version
*#8999*8376263# All Versions Together

*#8999*8378# Test Menu
*#4777*8665# GPSR Tool
*#8999*523# LCD Brightness
*#8999*377# Error Menu
*#8999*327# EEP Menu
*#8999*3825523# Don’t Know.
*#8999*667# Debug Mode
*#92782# PhoneModel (Wap)
#*5737425# JAVA Mode
*#2255# Call List
*#232337# Bluetooth MAC Adress
*#5282837# Java Version

#*4773# Incremental Redundancy
#*7752# 8 PSK uplink capability bit
#*7785# Reset wakeup & RTK timer cariables/variables
#*1200# ????
#*7200# Tone Generator Mute
#*3888# BLUETOOTH Test mode
#*#8999*324# ??
#*7828# Task screen
#*5111# ??
#*#8377466# S/W Version & H/W Version
#*2562# Restarts Phone
#*2565# No Blocking? General Defense.
#*3353# General Defense, Code Erased.
#*3837# Phone Hangs on White screen
#*3849# Restarts Phone
#*3851# Restarts Phone
#*3876# Restarts Phone
#*7222# Operation Typ: (Class C GSM)
#*7224# !!! ERROR !!!
#*7252# Operation Typ: (Class B GPRS)
#*7271# CMD: (Not Available)
#*7274# CMD: (Not Available)
#*7337# Restarts Phone (Resets Wap Settings)
#*2787# CRTP ON/OFF
#*2886# AutoAnswer ON/OFF
#*3737# L1 AFC
#*5133# L1 HO Data
#*7288# GPRS Detached/Attached
#*7287# GPRS Attached
#*7666# White Screen
#*7693# Sleep Deactivate/Activate
#*7284# L1 HO Data
#*2256# Calibration info? (For CMD set DEBUGAUTONOMY in cihard.opt)
#*2286# Databattery
#*2527# GPRS switching set to (Class 4, 8, 9, 10)
#*2679# Copycat feature Activa/Deactivate
#*3940# External looptest 9600 bps
#*4263# Handsfree mode Activate/Deactivate
#*4700# Please use function 2637
#*7352# BVMC Reg value (LOW_SWTOFF, NOMINAL_SWTOFF)
#*2558# Time ON
#*3370# Same as 4700
#*3941# External looptest 115200 bps Read more »

gc-300, etc Nam Programming:

Nam Set: Menu, 9, Spc

A-key: Press “Sto” 3sec, 2539**

lgc-330w, etc Nam Programming:

Nam Set: Menu, 4, 0, Spc

A-key: 2539**