BLE Arduino communication problem receive HM10

Hello, I try to make an app using BLE communication and Arduino.
I’m using an Arduino Uno with HM10 module and an smartphone Android.
The communication from smartphone to Arduino is OK, but from Arduino to smartphone NO, I receive uncorrect charatters. So I done a test with a generic app for test serial communication but with this app is all OK.

Can you help me?


Hmmm… Let me think about it…