Hi,
I have an app that connects BLE successfully from IOS and Android to an ESP32.
Everything works well.
The only problem is when the phone’s Bluetooth is switched off.
A BLE Scan instantly crashes the IOS phone but successfully catches the error on Android.
Is there a method to determine a phone’s Bluetooth ON/OFF status before performing a BLE Scan?
Hi tonykellymailzqnnbv, welcome to Thunkable! 
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This is unfortunately not something we can do natively yet with the Blocks. You may be able to do a bit of a work-around by checking for the RSSI value via a scan and if that is equal to zero (effectively saying it is off), then abort the attempt to connect and do something else.
