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Sony Ericsson 688 Secrets And Codes:

To view IMEI number *#06#

To view Software Version enter -> * <- <- * <- * CLR (Use with Care)

To reset phone language to English *#0000#

>*<<*<*> 1-row text strings. If pressing YES you can check the phones 1-row text programming in currently selected language.

>*<<*<*>> n-row text strings. If pressing YES you can check the phones n-row text programming in currently selected language.

Pinouts:

1 = + external power supply. 7.2v @ 600mA.

2 = RS232 input (TTL)

3 = GND (digital)

4 = RS232 output (TTL)

5 = +5V output. Limited.

6 = Test. Switch phone off and provide +5V and switch back on. (set comms at 9600, n,8,1)

7 = Mute (0 – Normal, 1 – In Call)

8 = Internal/external (0 – External Mic/Speak, 1 – Internal Mic/Speak)

9 = GND (analog)

10 = Related to Mic/Speak

11 = BF in

12 = BF out

Ericsson 768/788To view IMEI number *#06#

To view Software Version enter * -> * <- <- * <- *

Service Provider Lock is * <- <- * but it is now called the ME lock. There are two options after selecting yes on another menu. These are lock to Network or lock to NetSubet.

Command set:

The following commands are recognized by the phone. Use 9600 baud, 1 stop bit, 8 data bits, no parity.

ATA Pick up phone during ring

AT+GMI Manufacturer identification

AT+GMO Request model Identification

AT+GMR Request revision Identification

AT+GMM

ATDxxx; Dial number xxx

ATH Hang-up phone

AT+CFUN=? Define levels of functionality in the order of power consumed

AT+CFUN=0 Switches off the phone

AT+CBC Query battery level

Each command has to be followed by a 0×0A, 0×0D sequence, that is carriage return – line feed. These commands will be acknowledged with an ‘OK’ prompt. An

incoming call is signaled by the string ‘RING’ sent by the phone at 9600b in normal mode.

Portable Hands free Unit

1 Earphone: 16 Ohm

2 Microphone: <- 2 kOhm

5 Connected to 04 (GND)

Pinouts:

Left to right, keyboard up.

1 Audio Out

2 Audio In

3 Accessory Sense. GND to enable External Mic and Speaker (Analog)

4 Audio Signal GND.

5 Portable hands free In.

6 Music Mute Out, High when phone is used.

7 In Flash Memory Voltage and Service Voltage, In 0V=normal,+5V=test, +12V=test+flash

8 Logic Out, Status On. Sources over 100mA

9 Data Out from Mobile Station. Debug messages appear here at 112KBaud when in debug mode.

10 Digital Ground and DC return

11 Data in

12 DC in for battery charging, DC out for accessory power