I have this error in my code, and I don't know what's going on? Could you please help me :frowning: I will be so happy, 'cause is for a school project and my deadline is tomorrow :frowning: SMS_verdadero_que_si_funciona.ino (1.83 KB) [Captura de pantalla 2017-10-29 a la(s) 10.24.46.png]

Problem with GSM SIM 900

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