Thank you so much.

Thanks for the answer.

I use the Android version: 8.0.0

Can you tell me where I can see how many bytes I send?
I use Flprog and the software does it all for me.

I can not use HC05 / 06, it needs to run on both systems.

Many Thanks

I have make a Projekt see: http://remotexy.com/en/editor/2e67f912b … 996eb6e2f/
It Works with iPhone 8 and Android (Samsung S8)
i can sent and receive.

i have make a other Projekt it is a Little bit different. (more Items) see: http://remotexy.com/en/editor/a666ad688 … 484bd9b9a/
it Works with iphone8 sent and receive
it work !!!not!!! with Android, i can only receive not sent

Thank You

FlProg, HM11 (DSD-Tech), Arduino Nano