[gr8guy]

Hello,

I just bought unlocked AT&T Bold and so far things are okay except that i can't send any sms!! I used to have BB 8800 and compared the setting and noticed that in the option: Network to send over options were 1)GSM OR GPRS.

Now on my Bold i have different options:

-Circuit switched
-Circuit switched Preferred
-Packet switched Preferred
-Packet switched

So i can't select the option GSM!!! Tried several things:

-Resent the service book! (succeeded)
-Registered through Host Routing Table (succeeded)

But i still can't sent any sms nor find a way to select GSM

Plzzzzzzz Help....Thanks in advance!

[Dubdub]

SMS is a phone/carrier issue, not a BB issue. Service books have nothing to do with it. Have you called the carrier to make sure SMS is enabled?

[serrano_yejo]

CS = Circuit Switched = Standard GSM network
PS = Packet Switched = GPRS network




PS and CS = Gprs and GSM
CS Only = GSM Only





PS stands for Packet Switch data (GPRS), and CS stands for Circuit Switch data (dial up).


put simply...

cs: is circuit switched. this is equivalent to dialup data (i.e. when you dial a telephone number) and the data is conveyed in a similar manner to a voice call

cs and ps/gprs is gsm
If you select 'CS only' then you can only make a CS type connection as described above. You will not be able to make a GPRS / 3G connection, indeed I think you will find that the phone won't even connect to GPRS / 3G, it'll say 'gprs detached'.


ps: is packet switched. this is where packets of data are transmitted either by gprs or by 3g

ps/3g is umts

If you set the phone to 'PS only', then you can make a GPRS / 3G connection, but not a CS connection at the same time as the GPRS / 3G connection is active. The implication of this is that you can't receive a call (which is CS) while your GPRS / 3G connection is active.

The "CS" setting improves battery