How to change the language for S15?

1. Go to the menu of Settings->System->Languages and input->Languages.

2. Tap "Add a language" to choose the intended one.

3. Press the "=" icon on the right side and drag it to the first line to select the language successfully.

Note: The language of the FIIO Music app defaults to follow the system's. You can also go to the FIIO Music app->ME>Languages/语言 to choose the language independently.