[BRLTTY] Reading with BRLTTY on Android

[Francisco Javier Dorado Martínez]

  Hi guys,
  I have a Freedom Scientific Pac Mate braille display attached to USB 
OTG connector on a Motorola mobile phone running Android 5.01.
  I have installed BRLTTY, and configured it for autodetect my braille 
display on USB port.
  It works like a charm, but when I try to read something on the screen 
Brltty keeps reading only the notification area
  at the top of the screen.
  I try to give focus to some text areas, Brltty goes to this text but 
only for a second, then the focus goes back to notification.

  Do I am missing something? reading the documentation perhaps... does 
anyone
  reproduce this behaviour?
  Many thanks for your valuable help

Regards,
Javier