How to construct a "Slient SMS"

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Luca Bongiorni luca.bongiorni1 at
Tue May 15 07:43:57 UTC 2012

consider also, that some operators detects silent sms and restores automatically TP-PID and TP-DCS.

Moreover changing TP-PID/TP-DCS I suggest you to use also Message Waiting Indication-Discard option [1].

Some examples: 

#pdu='0011000C91'+str(num)+'0000AA0141'        # SMS Classic
#pdu='0011000C91'+str(num)+'4000AA0141'        # 0x40 (TP-PID) 
#pdu='0011000C91'+str(num)+'40C0AA0141'	  # 0x40(TP-PID) and 0xC0(Message Waiting Indication-Discard)



> On Mon, May 14, 2012 at 3:27 PM, Chengcheng Gou <gouchengcheng at> wrote:
> I want to study the Slient SMS, How can it be constructed? Anyone kowns?

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