Till iOS 12 we have 2 ways to connect with bluetooth.
1) CoreBluetooth - Bluetooth LE devices.
2) External Accessory Framework - Bluetooth classic devices using MFI program.
As per the documentaion of apple , Now with iOS 13 we can search bluetooth classic devices using CoreBluetooth. I've tried but no luck. I was not able to search classic devices using Apple's sample. It searches only LE devices.
