I have recently found this: "Tutorial: Send SMS from your Arduino using an old Motorola cell phone" at http://murchlabs.com/send-sms-from-your-arduino/. So I rebuild this to use it in one of my current projects. It works and I receive messages but I have one problem, the delete command does not work reliable. In most cases it just do not delete the messages, until now I had to bypass this by increasing the index every time, but this just works until the Arduino restarts as it is not saved permanently. Also quit bizar is that my mobile phone (Motorola W220) shows in the outbox folder for every SMS a green arrow that means that it has sent the SMS but above there is also some kind of passage prohibited sign that I guess means it couldn't send the SMS, although I receive every time the right message.
Does anyone know something about this or has already some experience with this? I have tried to find other commands for deleting messages, but just found the "AT+CMGD=?" while ? is the index of the SMS I want to delete. Does anyone knows a site which a complete list of commands or a command that deletes everything or all SMS?
And how can I display the response from the phone correctly on my computer as e.g.
This just print a number I guess "11" on my screen
I am looking forward to hear from you.
King regards Greeneco