GSM detection/identification

Dimitri spam2 at
Wed Jul 30 02:48:23 CEST 2008

Are you able to make and receive calls?

If not, perhaps the sim isn't touching all the phone's connections.

At least, that's the problem I had when I tried to connect to AT&T. It would
show that I had 5 bars, but it would always say "Registering...".

I was able to wiggle the sim a little, reboot the phone, and have it
properly connect to the ATT network (i.e., it changed from "Registering..."
to "AT&T" and I was able to make/receive calls and text messages).


Paul Buede wrote:
> So, I picked up a tmobile sim, and signed up with them (I have another
> week to cancel), and so the phone registers with tmobile.  I am finding
> the coverage isn't great in the rural areas I find myself.  When driving
> around, if out of reach of tmobile, it will say "registering" as if
> there is no sim card.  But, on the little image of the antenna, that
> shows how strong my connection is, I still have 2 bars.  Is that a bad
> guage of connectivity?  Is it wrong?  Or does that maybe tell me that it
> has 2 bars of strength with some sort of other gsm network?  Is there a
> way I can query the phone from the cli to have it show me the different
> carriers it can sense network for?  I am interested in running a little
> cron to pipe all carriers it detects into a file every minute as I drive
> around the countryside, so I can see  who i will get the best coverage
> with.
> Thanks

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