Hi TP-Link,

I have bought a UB500 and run it on my Linux device and tried to connect with Ubuntu by rfcomm.

When doing the communication, it can work well, that means I can type some word from my device and see them on the Ubuntu.

Also, I can type some word from my Ubuntu and see them on my device.

That's no problem.

But after that, when I want to connect the dongle with my IPhone, it  always cannot connect well.

And plug UB500 into windows and tried to connect it from Android or IPhone, both cannot work. 

Below are my command run with UB500:

sudo hciconfig hci0 piscan

sudo sdptool add --channel=50 --handle=1 SP

sudo rfcomm watch hci0

sudo minicom -D /dev/rfcomm0

And below are the commands run with Ubuntu:

sudo sdptool search SP

sudo rfcomm connect /dev/rfcomm <Address>

sudo minicom -D /dev/rfcomm0

Could you help to check it?

Thanks.

Eric