[priya24dec]

I am developing an application in c#.net for sending SMS from PC to mobile. i have managed to send message. but when i send message my number is visible to receiver..i want to hide identity but using only gsm modem.. i dnt want to use gateway.
Is it possible using gsm modem?

[RexGrammer]

You probably can't. Just as you can't hide your phone number when sending a message from your mobile.

[priya24dec]

Then is dere there any other way to hide number without modem and gateway.

This post has been edited by tlhIn`toq: 13 June 2012 - 07:02 AM

[tlhIn`toq]

Don't keep going in circles. You asked if it was possible. You were told 'no it isn't'. Then you keep asking if its possible. I hid your duplicate requests of the same question.

If you don't understand the technology you are coding for then you should read up on it some more.

The nature of SMS messages is that your caller ID/Telephone number must be provided.

So in other words, you can't just go spamming people with text messages without them knowing who you are.

[AdamSpeight2008]

Some Networks do allow your phone number not to be display, but the callee can choose to block them.

[tlhIn`toq]

priya24dec, on 13 June 2012 - 05:00 AM, said:

...from PC to mobile. i dnt want to use gateway.

Right. But that's SOME networks.

And the OP is obviously writing a spamming app which we really don't condone. If it was a legitimate reason for a legitimate company the OP wouldn't be out of Mumbia, clueless about the very nature of SMS and looking to hide their identity, and using their cell phone to do the sending (no modem or gateway).

So, Priya... Since you are using your cell phone have you tried going into its settings, or your account settings for the cell phone service and turning off the "broadcast caller ID" option?

[AdamSpeight2008]

It should also be noted that the Network Operator still knows your Caller ID, this will not change if the "Show Caller ID" settings are altered.

This post has been edited by AdamSpeight2008: 13 June 2012 - 08:07 AM

[Momerath]

It can be done, it's not very hard, and I'm not going to say how to do it as I see no legitimate use for doing so. Also, as noted above, you can still be traced and the sending of anonymous SMS message is illegal is some locations.

[tlhIn`toq]

At this point, several experts have pointed out there is no legitimate reason for this and it is still tracked by the service provider.

I just see things going down hill from here, so I'm closing it.

We don't need to be providing tips for spammers, terrorists, school yard bullies or kidnappers looking to send anonymous text messages.