How to fix android bluetooth disabled on start up or after airplane mode

The bluetooth serivice of my android smartphone is disabled on start up or after airplane mode.

Seems to be an android issue due to the enabling of bluetooth scanning for location service.
To disable the bluetooth scanning go to android setting and select Location, press the 3 dots in upper right corner, select Scanning and disable Bluetooth scanning.

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Smart solar water heating solution to take part in the Open IoT Challenge 4.0!

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