I’m trying to make a simple L2CAP Socket communication between IOS and a Linux PC. I’ve been able to: Create an L2CAP connection between two Linux machines (using example code from https://github.com/atwilc3000/sample/tree/master/Bluetooth) Create an L2CAP connection between two Iphones (using example code from https://github.com/github-deden/iOS_L2Cap) On that IOS example they are using some PSM advertise in order to chose the correct