Ho scritto una mail all'assistenza thl : risposto molto velocemente ma altrettanto deludente.......
Thank you for your mail.
Could you kindly tell us your order number firstly?
Regarding to the issue you mentioned ,please reset your device to factory mode: Setting-backup&reset -Factory Data Reset.
Have a nice day!
Best regards
Carry
Customer Service Support Center
Any questions if you have, please feel free to contact us again.
In pratica, secondo loro, facendo un reset tutto si sistema, batteria ed audio basso..... mah