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ble_app_uart TX Characteristic doesn´t work

Hi,

I flashed and run "ble_app_uart" example on nrf52833 DK. With an UART tool, I can recieve data from smartphone (rx characteristic) but I can´t send data from UART tool to smartphone. I pushed the "download arrow" in tx characteristic on smartphone. I sent just a character from UART tool. I didn´t do any modifications to the example.

Do I have to do something other?

Thanks in advance

Simon

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