its not turning off
Thank you for asking. Please try: press the "smaller button" in the right side of the phone>choose "power off"
If the issue remain, kindly provide the information below so that we could better assist you.
1. Model name: ZC550TL, ZB570TL or else
2. The firmware: Setting>System>Advanced>About Phone>Build number
3. At the moment that your phone link on USB cable and start to charge, does it react the vibration?
4. Could you describe the issue in more details? Have you try to download/update any firmware before the issue appeared?