When I call on the phone, people hear me well but I listen very quietly, before when I was in the stable it was heard well

@mariogrip I have Oneplus 3T and everything work fine,but camera does not work, only with gsdroid, and the videos are frozen

@webmust https://forum.xda-developers.com/t/op6t-latest-10-3-8-collection-of-unbrick-tools.3914746/

@webmust https://forum.xda-developers.com/t/op6t-latest-10-3-8-collection-of-unbrick-tools.3914746/

@portu51 And you can reinstall again without format,normaly work

Mine happens the same but with patience I go to recovery reboot for bootloader reboot again and if it does not start, I turn off and on with volume + power and at times it starts normally, you have to try the various options

@sven https://forum.xda-developers.com/t/op6t-latest-10-3-8-collection-of-unbrick-tools.3914746/ open this page download the oxigen 9 and the tool,is very easy,but you must do this with windows

@rbhawk yes,you install Oxygen 9 to after can install UT.

@opaijavai Yes sometimes i have issues with sms and calls,i reboot the phone and start work.

Today I update the system with version 25 an now work everything ok adb and gps

Before adb and gps work but in two last updates ad and gps stop work

After installing the latest update on the 6t, ADB worked fine several times, but suddenly stopped working.

@moem Go to recovery and reboot to fastboot and reboot again and thre phone start or volume+ power and sometimes start too