You can use an old Sony Ericsson phone as free or dirt cheap GSM “shield” for sending and receiving messages (turning on/off some device), sending collected data (as e-mail, SMS, MMS) to any location, receiving or initiating calls – for example if an alarm is triggered, or to listen what is going on…

Old Sony Ericsson phone as GSM shield, clock, display, keyboard, BT, audio, more

system February 24, 2011, 8:16pm 6

I can have a J220i, do you think it could be usable ?

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