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sim900a restarting frequently

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cheenu02

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hi,
I am using using SIM900a to send sms in my project.It was worked fine till yesterday.The problem is it is restarting continuously from today morning onwards.The output is like this



RDY

+CFUN: 1

+CPIN: READY

Call Ready

RDY

+CFUN: 1

+CPIN: READY

Call Ready

RDY

+CFUN: 1

+CPIN: READY


please help me
 

Check the input voltage to the module. It must be atleast 4.1.
 

Commonly it happens when the supply voltage drops below the brown out level of the module.

Increase the supply current (the power supply should able to supply around 1.5Amps for a short period)
 

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