Tools

Raspberry Pi Bluetooth Data Transfer to Smartphone

References

How to Send Data from Pi to Android Over Bluetooth
Controlling Raspberry Pi GPIO Using Android App Over Bluetooth
Raspberry Pi Bluetooth Send/Receive
Setup Raspberry Pi WiFi Ubidots Send Data
Using Raspberry Pi 3 On-board Bluetooth for Communication
Sending Data from a Raspberry Pi Sensor Unit Over Serial Bluetooth
Raspberry Pi Bluetooth Data Transfer to the Smartphone