Bravia 4K GB Bravia 4K GB is a tv manufactured by Sony. Latest user agents:Dalvik/2.1.0 (Linux; U; Android 7.0; BRAVIA 4K GB Build/NRD91N.S42)Dalvik/2.1.0 (Linux; U; Android 7.0; BRAVIA 4K GB Build/NRD91N.S124)Dalvik/2.1.0 (Linux; U; Android 7.0; BRAVIA 4K GB Build/NRD91N.S90)Dalvik/2.1.0 (Linux; U; Android 7.0; BRAVIA 4K GB Build/NRD91N.S139)