Using bluetooth module and sms module to send sms notification in kotlin

Hi we are currently working on our system thesis that will involve egg monitoring application that will send updates using the application. Hope you have an idea to pull it off

your specification is vauge
e.g. do you wish to send a message from an Arduino via Bluetooth to an Android phone which then sends an SMS text
what Arduino are you using?

Sorry for the unclear context of my post. We are going to use HC-05 bluetooth module and a Sim900 gsm module. When the app will be connected to bluetooth module, when the app would send an update to the customer it will use the sms module o send an update to the customers number

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