I am using an Arduino nano 328p and sim900A A6 GPRS/GSM module.I want to send an sms from the module to my phone.I have connected the tx of arduino to u_rxd of gsm module , rx of arduino to u_txd of module and gnd of arduino to gnd of module.I am powering both the arduino and gsm modules using usb c…

Unable to send sms using arduino nano and sim900a A6 GSM module

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