Sony Ericsson Techmode

Techmode of K600i


Some Sony Ericsson phones can activate Techmode by:

enter *585*0000# + press send button
or
enter *585*0000 + press call button

The techmode screen is in Setting/ Connectivity/ Mobile networks

There are 6 screens in TechMode for GSM/WCDMA phone:
- GSM Channel
- GSM AMR
- GSM GPRS
- GSM WCDMA Neig
- GSM WCDMA Cell
- WCDMA Intra/Inter

The last 3 screens are available in 3G phone only. To minimize TechMode push and hold return button.

The code is not working on K300i, K500i, K700i, J300i (db2000) and the more J200i, J210i, J230i, Z200, Z300 (Chinese ODM models) and older models

The code works on the K750i, D750i, W800i, K600i, K608i, V600i, Z520i (db2010)

The code is not working on the new platform SE db2020 - K790i, K800i, K610i, K630i, W850i, W710i, Z710i, Z610i without modification of GDFS.

If after entering the code nothing but incorrectly dialed numbers means modification of GDFS is needed to activate Techmode.

*BACKUP YOUR GDFS BEFORE ANY MODIFICATION

For DB2010 phones:
gdfswrite:00020D1D01
gdfswrite:00020D1E01
gdfswrite:00020D1F00000000

For DB2020 phones:
gdfswrite:00020E4901
gdfswrite:00020E4A01
gdfswrite:00020E4B00000000


Description of TechMode:
-------------------------
GSM Channel
-------------------------
A BBB CC -DD EEEEF GG
HHHH I JJJ K LL MM
NNN OO PP QQQ RR SSSS
TTT -TT UUU -UU VVV -VV
WWW -WW XXX -XX ZZZ -ZZ

A - Current type of service:
B - BCCH - Broadcast Control CHannel - Standby Mode
S - SDCCH - Standalone Dedicated Control CHannel - Used fo registration, autorization and refreshing status.
F - Frequency Hopping - TDMA frames are transfered at different frequencys.
T - TCH - Transfer CHannel - Data transfer/Speaking Mode.
BBB - Number of current channel:
001...124 - GSM 900 (124 channels)
512-885 - DCS 1800 (374 channels)
974...1xxxx - EGSM 1900
9999 - No Signal.
CC - Number of current channel on a current BS (Base Station)
DD - Recieve level (RxLevel): -40dBm...-117dBm. -40dBm is the strongest signal.
EEEE - Cell ID
F - Cell Sector Number
GG - DTX
HHHH - seems like another channel (?)
I - Timeslot number: 0...7
One of the eight channels which are used to transfer TDMA traffic.
On 0 channel is transfered control information: BCCH, SDCCH, etc. Other channels are used for traffic.

JJJ - Transmitter signal level, 0...34 dBm
K - Bit Error Rate - number of errors, 0...7.
0 - No errors. When more than 5, sound is being lost frequently.
RxQual table
0---BER < 0.2 (%)
1---0.2 < BER < 0.4
2---0,4 < BER < 0.8
3---0.8 < BER < 1.6
4---1.6 < BER < 3.2
5---3.2 < BER < 6.4
6---6.4 < BER < 12.8 (Half of packets are lost here)
7---12.8 < BER

LL - Timing Advance. 0...63.
With this parameter it is possible to calculate distance to BS using the following formula:
L=1.11 x TA/2, where L is the distance to BS, TA - Timing Advance.
In GSM standard max distance from BS is 35.2 km, so one number here is rouhly 550 m.
Timing Advance: 0; 1; 2; 3; 4; 5...63
Distance to BS: <550 m; 550-1100 m; 1100-1650 m; 1650-2200 m; 2200-2750 m; 2750-3300 m ... 35.2 km.

MM - No Info. 0...31 (maybe it is number of lost packets)
NNN - Rate of speech codec:
HR - Half Rate
FR - Full Rate
EFR - Enhanced Full Rate
OO - No Info. 0...95 (seems like RxQual)
PP - No Info. 0...83
QQQ - Network Country Code (NCC)
RR - Operator Code (MNC)
SSSS - Local Area Code (LAC)
TTT -TT UUU -UU VVV -VV
WWW -WW XXX -XX ZZZ -ZZ Channel Numbers & Rxlev of neighbouring cells

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iPhone field test modeSony Ericsson Techmode
Nokia DCT-4 Netmonitor/Field Test Mode
HTC Field Test Mode/Engineering Mode
Blackberry Engineering Mode