Embedded Files
You can use new sim without miss any emergency or important call
How to make :
How to make :
Open Arduino IDE
Click Sketch > include Library > Add .Zip Library...
Select the ZIP file
File > Examples > GPRS sim900 > ProjectSimChanger
Add your new number in your code
upload
Connect D7,D8 of shield to D10,D11 of arduino mega
if you use arduno uno Connect D7,D8 of shield to D7,D8 of arduino uno
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