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[SOLVED] Sim900 sms problem; the AT Commands seen in the received SMS

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abdi110

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Hi everybody...
I am new to this forum and this is my first post.
I have a problem with sim900 when i send sms with it, the AT Commands will be sent in the SMS content and is seen in the sms recieved.
for example the received SMS is as below:
ATAT+CMGF=1AT+CMGS="09XXXXXX"
SMS TEXT
 

Try using ATE0 and execute the command again..
 
Post your code
 

ADGAN said:
Post your code
Click to expand...

Dear ADGAN;
So thanks, my problem has been solved by increasing delays between AT commands.
now i have another question:
under the sim 900 module there is a circle and nine points? what shal i do in pcb with them?
could you please help?
Thanks again
 

DO NOT have any PCB tracks or fills in those areas, follow the SIM900 hardware document for the keep out area sizes.

Cheers
 
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