Sound quality decreases when the screen goes off

The reason for it is that your device sets special options when the screen goes off. There are two well known reasons for that:

  • the reason is in Your PSP or WiFi cards
  • in device the options of proccessor is set, which decrease its speed after the screen goes off

There is a method in Zadarma how to avoid screen going off during conversation. To activate it (if it's not automatically determined by PSP) You have:

  • to change to «Expert» mode on page of common settings
  • in section «Interface» to activate option «Don't shut off the screen»