- I used https://github.com/NordicSemiconductor/Android-BLE-Library version 2.1.1 and https://github.com/NordicSemiconductor/Android-Scanner-Compat-Library to code My Ble app. So, i read document android that say can change TxPower level. How can i do that with Android-BLE-Library and Android-Scanner-Compat-Library? Thank you