Re: Trouble-shooting a Samsung Phone

[Pawel Kot]

On Tue, 16 Nov 2004, Steven Feil wrote:

> Is there a test that can be preformed to determine if a cell phone is
> a AT-mode compatible phone?

Connect to the phone with minicom and issue "AT" command. Or read the
phone manual. Or search the web.

> I recently purchased a Samsung SGH-C225 phone and cable (both Serial
> and USB). the phone has WAP Internet over GPRS capability, but I have

GPRS phone is almost definitely AT compatible phone.

> When I connect an AT-mode phone to the serial port and run minicom
> should the phone respond similar to the way a modem does? For

Yes.

> instance, if I were to send "at<enter>" should the phone respond with
> "OK"?

Yes.

> Also, do AT-mode phones generally implement ate0 and ate1 the
> same way Hayes compatible modems do?

Probably yes.

> I tried testing it by downloading the T-Mobile software on a windows
> 98 box. I tried using the serial and USB cables, but the software said
> that it did not detect an AT compatible phone.
>
> I thought it might be a bad cable, but I discovered that doing the
> following steps will cause the phone to send some data. Turn the phone
> off, connect the phone via the serial cable, start minicom, press the
> power button. The phone does not turn on, it just says charging and
> sends the following data to the computer.
>
> 000000 16 16 fe ff cb af 9c 93 16 43 68 69 70 20 30 3a    .........Chip 0:
> 000016 20 70 61 67 65 20 6d 6f 64 65 20 65 6e 61 62 6c     page mode enabl
> 000032 65 64 16 43 68 69 70 20 31 3a 20 70 61 67 65 20    ed.Chip 1: page
> 000048 6d 6f 64 65 20 65 6e 61 62 6c 65 64 16 03 7c fb    mode enabled..|.
> 000064 ff ff fe 16 03 7c 92 ff ff fa 16 04 7c 16 4c 7c    .....|......|.L|
> [snip]
> 001296 20 70 61 74 74 65 72 6e 20 30 78 61 62 62 38 0a     pattern 0xabb8.
> 001312 4e 56 4d 3a 20 73 69 7a 65 20 6f 66 20 4d 4d 49    NVM: size of MMI
> 001328 20 4e 56 4d 20 3d 20 33 39 39 33 32 20 62 79 74     NVM = 39932 byt
> 001344 65 73 16 09 3c 98 f0 07 98 16 09 3c 98 f0 07 98    es..<......<....
> [snip]

This is definitely some proprietary protocol. Doesn't the phone come with
some software on CD/DVD?

pkot
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